WO2023273785A1

WO2023273785A1 - Antenna assembly, electronic device and communication system

Info

Publication number: WO2023273785A1
Application number: PCT/CN2022/096728
Authority: WO
Inventors: 罗嘉文
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-06-29
Filing date: 2022-06-02
Publication date: 2023-01-05
Also published as: CN113437476A; CN113437476B

Abstract

The present application provides an antenna assembly, an electronic device, and a communication system. The antenna assembly comprises a reference floor, a plurality of radiation units, a radio-frequency chip module, and an adjustment module. The plurality of radiation units are arranged around the peripheral surface of the reference floor. The radio-frequency chip module is provided opposite to the board surface of the reference floor. The adjustment module is electrically connected between at least two radiation units and the radio-frequency chip module, and the adjustment module is configured to adjust the phase and/or power of the electrically connected radiation unit. The present application provides an antenna assembly, an electronic device, and a communication system for improving coverage of a ranging measurement angle of an antenna and reducing the overall volume of the antenna.

Description

Antenna components, electronic devices and communication systems

This application claims the priority of the Chinese patent application with the application number 202110732738.7 filed with the China Patent Office on June 29, 2021, and the application name is "antenna assembly, electronic equipment and communication system", the entire content of which is incorporated by reference in this application .

technical field

The present application relates to the technical field of communication, and in particular to an antenna assembly, electronic equipment and a communication system.

Background technique

With the development of the Internet of Things, the distance measurement and angle measurement of the antenna has a great application space in the field of communication between objects, such as object finding, positioning, intelligent remote control and so on. As users pursue the miniaturization of electronic devices, how to improve the coverage of the antenna's range and angle measurement and reduce the overall volume of the antenna has become a technical problem that needs to be solved.

Contents of the invention

The present application provides an antenna assembly, an electronic device, and a communication system that improve the coverage of the antenna for distance measurement and angle measurement and reduce the overall volume of the antenna.

In a first aspect, the present application provides an antenna assembly, including:

reference floor;

a plurality of radiating elements arranged around the perimeter of the reference floor;

A radio frequency chip module is arranged opposite to the surface of the reference floor; and

An adjustment module, the adjustment module is electrically connected between at least two of the radiation units and the radio frequency chip module, and the adjustment module is used to adjust the phase and/or power of the electrically connected radiation units.

In a second aspect, the present application provides an antenna assembly, including:

reference floor;

The radio frequency chip module is arranged opposite to the board surface of the reference floor;

an adjustment module, arranged opposite to the surface of the reference floor, the adjustment module is used to adjust the phase and/or power of the radiation unit,

The first switch control module is arranged opposite to the surface of the reference floor; and

a controller, the controller is electrically connected to the first switch control module, and the controller is used to control the first switch control module to communicate with the adjustment module and the radio frequency chip module or communicate with at least one of the radiation units and the RF chip module.

In a third aspect, the present application provides an electronic device, including the above-mentioned antenna assembly.

In a fourth aspect, the present application provides a communication system, including a communication device and the electronic device, and the communication device establishes a wireless communication connection with the electronic device.

Description of drawings

FIG. 1 is a top view of an antenna assembly provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a first communication system provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a second communication system provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a third communication system provided by an embodiment of the present application;

Fig. 6 is a perspective view of an antenna assembly provided in Fig. 1;

Fig. 7 is a top view of the antenna assembly shown in Fig. 6;

Fig. 8 is a sectional view along line A-A of Fig. 7;

Fig. 9 is a partial schematic diagram of the antenna assembly shown in Fig. 7;

Fig. 10 is a partial top view of the antenna assembly shown in Fig. 9;

Fig. 11 is a partial perspective view of the antenna assembly shown in Fig. 9;

Fig. 12 is an S-parameter curve diagram of the radiation unit without the third radiation arm and the fourth radiation arm provided by the embodiment of the present application;

Fig. 13 is an S-parameter curve diagram of the radiation unit provided by the embodiment of the present application;

Fig. 14 is an S-parameter curve diagram of the antenna assembly provided by the embodiment of the present application;

Fig. 15 is an efficiency curve diagram of the antenna assembly provided by the embodiment of the present application;

Fig. 16 is a top view of the first antenna assembly provided by the embodiment of the present application;

Fig. 17 is a top view of the second antenna assembly provided by the embodiment of the present application;

Fig. 18 is a top view of a third antenna assembly provided by an embodiment of the present application;

Fig. 19 is a top view of a fourth antenna assembly provided by an embodiment of the present application;

Fig. 20 is a top view of a fifth antenna assembly provided by an embodiment of the present application;

Fig. 21 is a top view of the sixth antenna assembly provided by the embodiment of the present application;

Fig. 22 is a top view of a seventh antenna assembly provided by an embodiment of the present application;

Fig. 23 is a top view of an eighth antenna assembly provided by an embodiment of the present application;

Fig. 24 is a direction diagram of the first mode provided by the embodiment of the present application;

Fig. 25 is a direction diagram of the second mode provided by the embodiment of the present application;

Fig. 26 is a direction diagram of the third mode provided by the embodiment of the present application;

Fig. 27 is a direction diagram of the fourth mode provided by the embodiment of the present application;

Fig. 28 is a graph of the arrival phase difference of the fifth mode provided by the embodiment of the present application;

Fig. 29 is a directional diagram of the fifth mode provided by the embodiment of the present application;

Fig. 30 is a directional diagram of the sixth mode provided by the embodiment of the present application;

Fig. 31 is a directional diagram of the seventh mode provided by the embodiment of the present application;

Fig. 32 is a direction diagram of the eighth mode provided by the embodiment of the present application;

Fig. 33 is a direction diagram of the first viewing angle of the ninth mode provided by the embodiment of the present application;

Fig. 34 is a direction diagram of the second viewing angle of the ninth mode provided by the embodiment of the present application;

Fig. 35 is a direction diagram of the third viewing angle of the ninth mode provided by the embodiment of the present application;

Fig. 36 is a current density distribution diagram of the ninth mode provided by the embodiment of the present application;

Fig. 37 is a direction diagram of the tenth mode provided by the embodiment of the present application;

Fig. 38 is a direction diagram of the eleventh mode provided by the embodiment of the present application.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. In addition, reference herein to an "embodiment" or "implementation" means that a particular feature, structure or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

In scenarios such as finding objects/people through communication devices (such as mobile phones) and positioning tag antennas, the positioning tag antenna is bound to the object/person to be found, and the positioning tag antenna is measured through the signal interaction between the communication device and the positioning tag antenna. The distance between the positioning tag antenna and the communication device (referred to as ranging) and the direction angle of the positioning tag antenna relative to the communication device (referred to as angle measuring), can obtain the distance and direction of the positioning tag antenna relative to the communication device and display it on the communication device. You can check the position of the positioning tag antenna on the communication device to obtain the position of the object/person you are looking for. The above scenarios can be applied to the positioning of mobile appliances (such as sweeping robots, drones, etc.), the positioning of small objects (such as mobile phones, keys, work cards, etc.), the positioning of people (such as children, the elderly), and the positioning of pets, etc. . Since the above-mentioned object/person to be found has the characteristics of real-time movement and small size, a positioning tag antenna with good omnidirectionality and high real-time positioning accuracy is required to interact with communication equipment.

In the remote control scenario of multiple smart home appliances, the remote control antenna detects the smart home appliance (that is, angle measurement) of the remote control antenna that the remote control antenna is facing by detecting the antenna signals emitted by multiple smart home appliances, and controls the smart home appliance interactive action.

For indoor positioning scenarios, three or more tag antennas located in different orientations measure the distance (that is, range) to the object under test, and obtain three circle intersections, which realize indoor positioning for the object under test.

The above scenarios are just a few scenarios that require high-precision ranging and angle measurement, and there are more scenarios, so I won’t list them one by one. In the general high-precision ranging and angle measuring technology, the single-antenna ranging antenna with a large reference floor is difficult to achieve isotropic radiation due to the reflection of the electromagnetic wave signal by the large reference floor, that is, it is difficult to support all-round uniformity. Ranging; the omnidirectional multi-antenna switching scheme can only be used by switching antennas alone, and cannot form specific beams to cover different angle domains, and the logic of antenna switching is complicated. In the scheme where the angle-measuring antenna and the ranging antenna are installed at the same time, the number of angle-measuring antennas and ranging antennas installed in a limited space is limited, and the angle-measuring and ranging range is limited. In addition, the ranging antenna is used for ranging The switching logic of the switch is complex, and complex switch switching may cause problems such as communication jams.

Please refer to FIG. 1 , the embodiment of the present application provides an antenna assembly 100 with a small number of antennas, a small space occupation, simultaneous ranging and angle measuring functions, good omnidirectional ranging and angle measuring, and high real-time positioning accuracy. , the antenna assembly 100 can be applied not only to the aforementioned scenarios of object/person positioning, remote control of multiple smart home appliances, and indoor positioning, but also to other scenarios that require good omnidirectionality and high real-time positioning accuracy. In other words, the antenna assembly 100 can be the above-mentioned positioning tag antenna, tag antenna and remote control antenna.

Please refer to FIG. 2, the antenna assembly 100 provided by this application can be applied to an electronic device 1000, the electronic device 1000 can be an independent positioning tag antenna device, and the antenna assembly 100 can also be integrated into mobile phones and other devices, That is, the electronic device 1000 may be an electronic product such as a mobile phone. In other words, the electronic device 1000 described in this application includes, but is not limited to, an item/person tracking and positioning device, an item/person finding device, a telephone, a television, a tablet computer, a mobile phone, a camera, a personal computer, a notebook computer, a vehicle-mounted device, an earphone , watches, smart homes, wearable devices, base stations, vehicle radars, customer premise equipment (Customer Premise Equipment, CPE) and other devices that can send and receive electromagnetic wave signals.

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of a first communication system provided by an embodiment of the present application. The communication system includes the electronic device 1000 and the communication device 2000 . A wireless communication connection is established between the electronic device 1000 and the communication device 2000, and the connection method includes but not limited to a Bluetooth connection, a Wi-Fi connection, and the like. For example, a pairing connection via Bluetooth. The antenna assembly 100 inside the electronic device 1000 in this application is used to perform signal interaction with the positioning antenna 2001 in the communication device 2000, so that the communication device 2000 can find objects/people in the positioning tag antenna scene The real-time location of the electronic device 1000 can be received. The communication device 2000 includes, but is not limited to, telephones, televisions, tablet computers, mobile phones, cameras, personal computers, notebook computers, vehicle-mounted devices, earphones, watches, smart homes, wearable devices, base stations, vehicle-mounted radars, customer front-end equipment ( Customer Premise Equipment, CPE) and other equipment that can send and receive electromagnetic wave signals. The present application does not limit the number of connections established between the electronic device 1000 and the communication device 2000 . This embodiment is described by taking the communication device 2000 as a mobile phone and the electronic device 1000 as a positioning tag antenna as an example.

Please refer to FIG. 4 , which is a schematic structural diagram of a second communication system provided by an embodiment of the present application. In the scenario of remote control of multiple smart home appliances, the electronic device 1000 remotely controls the communication device 2000a, the communication device 2000b, and the like. Wherein, the electronic device 1000 includes, but is not limited to, a smart remote control, or an electronic product with a smart remote control function. The communication device 2000a and the communication device 2000b include, but are not limited to, smart home appliances such as TVs, air conditioners, and smart lights.

Please refer to FIG. 5 , which is a schematic structural diagram of a third communication system provided by an embodiment of the present application. There are multiple electronic devices 1000 . The electronic device 1000 has a tag antenna. The communication device 2000 is an object to be positioned. For example, the three

electronic devices

1000a, 1000b, and 1000c are installed in different directions indoors, for example, on different walls, and the three

electronic devices

1000a, 1000b, and 1000c all measure the communication device 2000 The distance between three circles is obtained to obtain the intersection point of the three circles, and the indoor positioning of the communication device 2000 is implemented at the intersection point.

For the antenna assembly 100, the antenna assembly 100 provided in the present application adopts UWB (Ultra Wideband, ultra-wideband) technology, that is, the antenna assembly 100 is a UWB antenna. Among them, UWB is a carrier-free communication technology that uses nanosecond to picosecond non-sine wave narrow pulses to transmit data. By transmitting extremely low-power signals over a wide frequency spectrum, UWB can use bandwidths above 1GHz within 10m. Antennas using UWB technology are called UWB antennas. The UWB antenna does not use a carrier, but uses nanosecond to picosecond non-sine wave narrow pulses to transmit data. Therefore, it occupies a wide spectrum and is suitable for high-speed, short-distance wireless personal communication. Generally, the operating frequency range of the UWB antenna is from 3.1 GHz to 10.6 GHz, and the minimum operating bandwidth is 500 MHz. Compared with traditional narrowband systems, UWB antennas have strong penetrating power, low power consumption, strong anti-interference ability, good anti-multipath effect, high transmission rate, long communication distance, high security, low system complexity, and can improve Accurate positioning accuracy and other advantages. The UWB antenna ranging accuracy error can theoretically reach 10cm, and using the measured distance to perform positioning calculations can obtain good positioning accuracy and stability. Therefore, the UWB antenna can be used in application scenarios such as extremely small size, location tracking or navigation of moving objects.

The antenna assembly 100 provided in the first embodiment of the present application will be specifically described below with reference to the accompanying drawings. Of course, the antenna assembly 100 provided in the present application includes but is not limited to the following embodiments. For ease of description, taking the viewing angle of the antenna assembly 100 in FIG. 6 as a reference, the width direction of the antenna assembly 100 is defined as the X-axis direction, and the length direction of the antenna assembly 100 is defined as the Y-axis direction, wherein The length of the antenna assembly 100 in the width direction is less than or equal to the length of the antenna assembly 100 in the longitudinal direction. The thickness direction of the antenna assembly 100 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other. Wherein, the direction indicated by the arrow is the forward direction.

Please refer to FIG. 6 , the antenna assembly 100 at least includes a reference floor 10 , a plurality of radiation units 20 , a radio frequency chip module 30 and an adjustment module 40 . Wherein, the radio frequency chip module 30 includes a UWB radio frequency chip.

The reference floor 10 is a reference ground of the antenna assembly 100 . The reference floor 10 is a layered, thin sheet, or sheet-like conductive structure, and specific materials include but are not limited to copper metal, silver metal, alloy and the like.

Please refer to FIG. 6 , the reference floor 10 has a first load-bearing surface 101 and a second load-bearing surface 102 arranged opposite to each other, and a peripheral side surface connected between the first load-bearing surface 101 and the second load-bearing surface 102 103. The peripheral side 103 is an annular surface. Both the first load-bearing surface 101 and the second load-bearing surface 102 are board surfaces of the reference floor 10 and are located on the X-Y plane. The thickness direction of the reference floor 10 is the Z-axis direction. In this embodiment, the reference floor 10 is roughly rectangular. The length direction of the reference floor 10 is the Y-axis direction, and the width direction of the reference floor 10 is the X-axis direction, wherein the size of the reference floor 10 in the length direction is greater than or equal to that of the reference floor 10 in the width direction. size. The present application does not specifically limit the shape of the reference floor 10 , and in other embodiments, the reference floor 10 may also be in the shape of a triangle, a circle, a rhombus, an irregular shape, and the like.

Referring to FIG. 6 , a plurality of radiation units 20 are arranged around the peripheral side 103 of the reference floor 10 at intervals. Wherein, the distance between two adjacent radiation units 20 may be equal or different. The present application does not limit the specific number of the radiation units 20 , and the number of the radiation units 20 includes but not limited to 4, 5, 6 and so on. In this application, four radiation units 20 are used as an example for illustration, and details will not be repeated hereafter.

The orthographic projection of the radiation unit 20 in the thickness direction (Z-axis direction) of the reference floor 10 is located outside the area where the reference floor 10 is located. In this way, there is more clearance area around the radiation unit 20 to increase its radiation efficiency. Optionally, the radiation unit 20 is a layered, thin sheet, or thin plate conductive structure, and specific materials include but are not limited to copper metal, silver metal, alloy, and the like.

Each of the radiation units 20 is used for emitting electromagnetic waves and receiving electromagnetic waves emitted by the communication device 2000 . This electromagnetic wave is a UWB antenna signal. It can be understood that the signal coverage of each radiation unit 20 is within the range of the part of the sphere it faces. A plurality of radiation units 20 are arranged around the peripheral side 103 of the reference floor 10, and the signal coverage of the plurality of radiation units 20 surrounds the peripheral side 103 of the reference floor 10, that is, in the direction around the Z axis. coverage, improving the omnidirectionality of the distance measurement and angle measurement of the radiation unit 20 .

7 and 8, in the thickness direction (Z-axis direction) of the antenna assembly 100, the antenna assembly 100 further includes a first dielectric layer 104 and a second dielectric layer located on opposite sides of the reference floor 10. Layer 105. Wherein, the first dielectric layer 104 is stacked on the first carrying surface 101 . The second dielectric layer 105 is stacked on the second carrying surface 102 . Both the first dielectric layer 104 and the second dielectric layer 105 are insulating materials. Viewed from the X-Y plane, the areas of the first dielectric layer 104 and the second dielectric layer 105 are greater than the area of the reference floor 10, so that the first dielectric layer 104 and the second dielectric layer 105 will The reference floor 10 is interposed therebetween.

The radiation unit 20 is a single-layer or multi-layer structure. In this embodiment, the radiation unit 20 is a multi-layer structure, and at least part of the radiation unit 20 may be located on the same floor as the reference floor 10 . Certainly, in other implementation manners, the radiation unit 20 and the reference floor 10 are respectively located on different layers. Specifically, a part of the radiation unit 20 is disposed between the first dielectric layer 104 and the second dielectric layer 105, and another part of the radiation unit 20 is located at the first dielectric layer 104 away from the first dielectric layer. One side of the second dielectric layer 105 .

The first dielectric layer 104 and the second dielectric layer 105 support and provide a certain dielectric constant (>1) to reduce the size of the antenna. Wherein, the materials of the first dielectric layer 104 and the second dielectric layer 105 include but are not limited to liquid crystal polymer (Liquid Crystal Polymer, LCP) or polyimide film (Polyimide Film, PI) , or modified polyimide film (Modified Polyimide Film, MPI) and other insulating materials with high dielectric constant.

The radio frequency chip module 30 is arranged opposite to the surface of the reference floor 10 . Optionally, the board surface is the first bearing surface 101 or the second bearing surface 102 . Specifically, the radio frequency chip module 30 is disposed on a side of the first dielectric layer 104 away from the second dielectric layer 105 . The orthographic projection of the radio frequency chip module 30 in the thickness direction is located in the area where the reference floor 10 is located, so that the space occupied by the radio frequency chip module 30 and the reference floor 10 in the X-Y plane coincides, reducing the overall The area of the antenna assembly 100 on the X-Y plane.

Wherein, the radiation unit 20 and the reference floor 10 are both metal layers or metal patches, so that the antenna assembly 100 is integrally formed into a thin plate shape, so as to promote the thinning of the antenna assembly 100 and facilitate assembly The electronic device 1000 can be miniaturized in various ways, and the portability and portability of the electronic device 1000 can be improved.

Please refer to FIG. 7 and FIG. 8 , the adjustment module 40 is opposite to the surface of the reference floor 10 . In this embodiment, the adjustment module 40 is disposed on a side of the first dielectric layer 104 away from the second dielectric layer 105 . The adjustment module 40 is electrically connected between at least two of the radiation units 20 and the radio frequency chip module 30 . For example, the number of the radiation units 20 is four, and the adjustment module 40 is electrically connected to two, three or four radiation units 20 . The adjusting module 40 is used for adjusting the phase and/or power of the electrically connected radiation unit 20 . In this embodiment, the adjustment module 40 is electrically connected to four radiation units 20 as an example. Optionally, the adjusting module 40 is used to adjust the phases of the four radiating units 20, for example, adjusting the four radiating units 20 to be in the same phase to form specific beams to cover different angular regions, by switching Form multi-directional coverage or quasi-isotropic coverage, thereby improving the coverage of ranging and angle measurement, and further improving the accuracy of ranging and angle measurement. Optionally, the adjustment module 40 is configured to adjust the power of the four radiation units 20, for example, adjust the four radiation units 20 to transmit and receive signals with the same power or different power. Optionally, the adjusting module 40 is used to adjust the power and phase of the four radiating units 20, for example, adjusting the four radiating units 20 to have the same power and the same phase, so as to simultaneously improve the four radiating units. 20 to achieve multi-directional coverage or quasi-isotropic coverage, using quasi-isotropic coverage can achieve relatively uniform detection in all directions.

The present application arranges the radiation unit 20 on the peripheral side of the reference floor 10, so that the peripheral side of the radiation unit 20 has a larger headroom, improves the signal sending and receiving efficiency of the radiation unit 20, and then improves the performance of the antenna assembly 100 when measuring angles and distances. The accuracy coverage of distance measurement and angle measurement further improves the accuracy of distance measurement and angle measurement; by setting the radio frequency chip module 30 and the like relative to the board surface of the reference floor 10, the reference floor 10 and the radio frequency chip module 30 are stacked in the thickness direction setting, which reduces the area occupied by the antenna assembly 100 on the plane where the reference floor 10 is located, thereby reducing the overall volume of the antenna assembly 100; it is arranged between the radio frequency chip module 30 and at least two of the radiation units 20 for adjusting The phase and/or power adjustment module 40 is configured to adjust the phase and/or power of at least two radiation units 20, and form a specific beam by controlling the phase of at least two radiation units 20, And then form a specific beam to cover different angle domains to achieve multi-directional directional coverage or quasi-isotropic coverage, thereby improving the coverage of ranging and angle measurement, and further improving the accuracy of ranging and angle measurement; The power control of the radiation unit 20, so that a plurality of the radiation units 20 send and receive signals with the same power or different power, improve the detection accuracy and functional diversity of the antenna assembly 100; by pairing at least two of the radiation units 20 phase and power control to form a phased array, and then form a specific beam to cover different angle domains, to achieve multi-directional directional coverage or quasi-isotropic coverage, thereby improving the coverage of ranging and angle measurement, and further improving the measurement accuracy. Accuracy of distance measurement and angle measurement; the radiation unit 20 can be applied to both distance measurement and angle measurement, and there is no need to additionally set different radiation units 20 for distance measurement and angle measurement respectively, so that the radiation unit 20 can be realized Multiplexing reduces the overall volume of the antenna assembly 100 and promotes the miniaturization of the electronic device 1000 .

The position of the radiation unit 20 relative to the reference floor 10 and the structure of the radiation unit 20 will be described below with reference to the accompanying drawings.

The reference floor 10 has a plurality of corners (eg four

corners

106a, 106b, 106c, 106d). The corner portion includes corner-cutting sides (for example, a first corner-cutting side 107 a , a second corner-cutting side 107 b , a third corner-cutting side 107 c and a fourth corner-cutting side 107 d ). The corner-cutting side is a side formed after the corner portion is cut off. At least one of the radiating units 20 is disposed corresponding to the chamfered side.

Specifically, please refer to FIG. 9 , the reference floor 10 is roughly rectangular. The reference floor 10 has four

corners

106a, 106b, 106c, 106d. In this embodiment, the four

corner portions

106a, 106b, 106c, and 106d all have chamfered sides. Of course, in other embodiments, only one, two or three corners may have chamfered edges. In the X-Y plane, it is defined that the reference floor 10 includes a first side 111 , a second side 112 , a third side 113 and a fourth side 114 connected end to end in sequence. Wherein, a corner portion is formed between two adjacent sides. The reference floor 10 has a first chamfered side 107a, a second chamfered side 107b, a third chamfered side 107c and a fourth chamfered side 107d. Wherein, the first chamfered side 107a intersects the first side 111 and the second side 112 . The second chamfered side 107 b intersects the second side 112 and the third side 113 . The third chamfered side 107c intersects with the third side 113 and the fourth side 114 . The fourth chamfered side 107d intersects the fourth side 114 and the first side 111 . The present application does not limit the angle between the above-mentioned chamfered side and the side. In the X-Y plane.

Referring to FIG. 9 , the plurality of radiation units 20 include a first radiation unit 20a, a second radiation unit 20b, a third radiation unit 20c and a fourth radiation unit 20d. The first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c and the fourth radiating unit 20d respectively correspond to the first chamfered side 107a, the second chamfered side 107b, the third corner-cutting edge 107c and the fourth corner-cutting edge 107d. The above-mentioned radiating unit 20 is respectively connected to the corresponding chamfered sides, which will be described in detail later in the structure of the radiating unit 20 .

By setting the corner portion of the reference floor 10 to have a chamfered edge, and setting the radiating unit 20 on the cut corner portion, that is, corresponding to the design of the chamfered side, on the one hand, it is convenient for the radiating unit 20 to form an end-fire Antennas, thereby improving the coverage of ranging and angle measurement, and further improving the accuracy of ranging and angle measurement; The entire area of the unit 20 and the reference floor 10 in the X-Y plane, thereby reducing the overall size of the antenna assembly 100 and the electronic device 1000; and, by setting the radiation unit 20 on the reference floor 10, the reference floor 10 is located in the range surrounded by a plurality of radiating units 20, and the reference floor 10 provides circuits such as the radio frequency chip module 30 and the feed source that are electrically connected to the radiating units 20. The carrying area is convenient for the antenna assembly 100 to be compact and reasonably laid out.

By setting the reference floor 10 as a square or approximately square, and performing a chamfer of about 45° on each corner, and forming one radiation unit 20 on each chamfer side, so four of the The radiation units 20 respectively face -45°, 45°, 135°, and -135° in the X-Y plane, and the signal coverage areas of two adjacent radiation units 20 are continuous, so that the four radiation units 20 are at least in 360° signal coverage is formed in the X-Y plane. It should be noted that the radiating unit 20 not only forms signal coverage in the X-Y plane, but forms signal coverage in a 3-dimensional space. In the X-Y plane, it is to illustrate that a plurality of the radiating units 20 are around the Z axis. Omni-directional coverage in all directions.

The present application does not limit the specific shape of the radiation unit 20 . Optionally, the radiating unit 20 includes, but is not limited to, a patch antenna, a dipole antenna, a microstrip antenna, a slot antenna, and the like. The specific shape of the radiation unit 20 will be illustrated below with reference to the accompanying drawings. Of course, the radiation unit 20 provided in the present application includes but is not limited to the following embodiments.

In this embodiment, the radiation unit 20 is a dipole antenna, and the dipole antenna and the PCB floor form an end-fire antenna with a wide bandwidth. Integration is facilitated by the angle of the downtilted dipole.

In this embodiment, please refer to FIG. 10 , the radiation unit 20 includes a first radiation arm 21 and a second radiation arm 22 . The first radiation arm 21 and the second radiation arm 22 are arranged symmetrically. The orthographic projections of the first radiating arm 21 and the second radiating arm 22 on the surface of the reference floor 10 intersect, and the orthographic projections of the first radiating arm 21 on the surface of the reference floor 10 and The included angle between the orthographic projections of the second radiating arms 22 on the surface where the reference floor 10 is located is toward the corner-cutting edge.

By setting the orthographic projections of the first radiating arm 21 and the second radiating arm 22 on the surface of the reference floor 10 to intersect, and the orthographic projection of the first radiating arm 21 on the surface of the reference floor 10 The included angle between the projection and the orthographic projection of the second radiating arm 22 on the surface where the reference floor 10 is located is toward the chamfered side, on the one hand, the first radiating arm 21 and the second radiating arm 22 form The down-tilt dipole structure further widens the width of the beam formed by the radiation unit 20, improves the signal coverage of the radiation unit 20, and further improves the detection range of the radiation unit 20; on the other hand, the Both the first radiating arm 21 and the second radiating arm 22 are inclined toward the side where the reference floor 10 is located, so that the area of the first dielectric layer 104 is as small as possible, thus reducing the overall size of the antenna assembly 100 size.

Certainly, in other implementation manners, the orthographic projections of the first radiating arm 21 and the second radiating arm 22 on the plane where the reference floor 10 is located are collinear.

In this embodiment, please refer to FIG. 8 and FIG. 10 , the radiation unit 20 is a multi-layer structure. The first radiating arms 21 and the second radiating arms 22 are arranged at intervals in the thickness direction of the reference floor 10 . Specifically, the second radiation arm 22 is located between the first dielectric layer 104 and the second dielectric layer 105 . That is, the first radiation arm 21 and the reference floor 10 are arranged on the same floor. The first radiation arm 21 is located on the surface of the first dielectric layer 104 away from the second dielectric layer 105 . Certainly, in other implementation manners, the first radiating arm 21 and the second radiating arm 22 may be arranged on the same layer.

Please refer to FIG. 9 and FIG. 10 , the antenna assembly 100 further includes a feeding portion 108 . The power feeding portion 108 is opposite to the surface of the reference floor 10 and is used for electrically connecting the radio frequency chip module 30 . The power feeding part 108 is located on a surface of the first dielectric layer 104 away from the second dielectric layer 105 . Specifically, the number of the feeding parts 108 is the same as the number of the radiation units 20 . In this embodiment, the number of the feeding units 108 is four, which are respectively denoted as the first feeding unit 108a, the second feeding unit 108b, the third feeding unit 108c and the fourth feeding unit 108d. Each of the radiating units 20 corresponds to one of the feeding parts 108 . The orthographic projections of each feeder 108 on the reference floor 10 are located close to the corresponding chamfered edge. For example, the first power feeding portion 108a is located close to the first chamfered side 107a. The first power feeding part 108 a , the second power feeding part 108 b , the third power feeding part 108 c and the fourth power feeding part 108 d are all used for electrically connecting the radio frequency chip module 30 .

Please refer to FIG. 8 , FIG. 10 and FIG. 11 , the radiation unit 20 further includes a first feeder 23 and a second feeder 24 arranged in parallel. One end of the first feeder 23 is electrically connected to an end of the first radiating arm 21 that is relatively close to the second radiating arm 22 . The other end of the first feeder 23 is electrically connected to the feeder 108 . One end of the second feeder 24 is electrically connected to an end of the second radiating arm 22 that is relatively close to the first radiating arm 21 . The other end of the second feeder 24 is electrically connected to the chamfered edge of the reference floor 10 .

In this embodiment, the first feeder 23 is located on the side of the first dielectric layer 104 away from the second dielectric layer 105, and the second feeder 24 is located between the first dielectric layer 104 and the second dielectric layer 105. between the two dielectric layers 105 . Both the first feeder 23 and the second feeder 24 extend along the diagonal direction of the reference floor 10 . The orthographic projection of the feeding portion 108 on the reference floor 10 is located at or near the middle of the first chamfered side 107a. The extending direction of the first radiating arm 21 is parallel to the extending direction of the first side 111 , and the extending direction of the second radiating arm 22 is parallel to the extending direction of the second side 112 . That is, the angle between the first radiating arm 21 and the first feeder 23 is about 45°. That is, the angle between the second radiating arm 22 and the second feeder 24 is about 45°. Further, for the first radiating unit 20a, the outer edge of the orthographic projection of the first radiating arm 21 on the plane where the reference floor 10 is located (the edge on the side away from the first feeder line 23 ) and The first sides 111 are collinearly arranged. The outer edge of the second radiating arm 22 (the edge on the side away from the first feeder line 23 ) is collinear with the second side edge 112 . Other radiating units 20 may also refer to the first radiating unit 20a.

Through the above-mentioned design, the radiation unit 20 is all arranged in the area where the corner is located, so that the area occupied by the radiation unit 20 and the reference floor 10 in the X-Y plane is small, thereby reducing the size of the electronic device. The size of the whole machine is 1000. In addition, by designing the first radiating arm 21 to be inclined relative to the first feeder 23, and the second radiating arm 22 to be inclined relative to the second feeder 24, the radiating unit can be realized The beam width of 20 is increased to improve the radiation signal coverage.

Certainly, in other implementation manners, a part of the radiation unit 20 is arranged in the area where the corner is located, and another part is beyond the area where the corner is located.

Further, referring to FIG. 10 and FIG. 11 , the radiation unit 20 further includes a third radiation arm 25 and a fourth radiation arm 26 . The third radiating arm 25 and the fourth radiating arm 26 are respectively connected to opposite sides of the first feeder 23 . Both the third radiating arm 25 and the fourth radiating arm 26 extend from the first feeder 23 in opposite directions. Optionally, the third radiating arm 25 and the fourth radiating arm 26 are arranged symmetrically with respect to the first feeder 23 . This application does not limit the angles between the third radiating arm 25, the fourth radiating arm 26 and the first feeder 23. In this embodiment, the third radiating arm 25, the fourth radiating arm The radiation arms 26 are all perpendicular to the first feeder 23 .

The third radiating arm 25 and the fourth radiating arm 26 are collinear and parallel to the corresponding corner cutting edge. In other words, the third radiating arm 25 and the fourth radiating arm 26 form a lateral branch on the first feeder 23 .

The present application does not limit the lengths of the first radiating arm 21 , the second radiating arm 22 , the third radiating arm 25 and the fourth radiating arm 26 . Optionally, the lengths of the third radiation arm 25 and the fourth radiation arm 26 are equal, and the lengths of the first radiation arm 21 and the second radiation arm 22 are equal. The length of the first radiating arm 21 is greater than the length of the third radiating arm 25 .

FIG. 12 is an S-parameter curve diagram of the radiation unit 20 provided by the embodiment of the present application without the third radiation arm 25 and the fourth radiation arm 26 . It can be seen from FIG. 12 that the radiating unit 10 without the third radiating arm 25 and the fourth radiating arm 26 generates a resonance mode in the range of 5 GHz to 9 GHz under the excitation of the radio frequency chip module 30 . The S-parameters of the resonant modes represented in Fig. 12 exhibit a concave curve. The resonant frequency of the resonant mode is 6.6082 GHz, and this data is only for example. In actual situations, the resonant frequency value can be adjusted by adjusting the lengths of the first radiating arm 21 and the second radiating arm 22 . The radiation unit 10 not provided with the third radiation arm 25 and the fourth radiation arm 26 has a certain range of coverage in the UWB frequency band.

FIG. 13 is an S-parameter curve diagram of the radiation unit 20 provided by the embodiment of the present application. It can be seen from FIG. 13 that the radiating unit 20 is used to support at least two resonant modes to form a wider bandwidth, and the frequency bands covered by the at least two resonant modes include the working frequency band of the UWB antenna. The third radiating arm 25 and the fourth radiating arm 26 are used to support the first resonance mode (the first concave curve in FIG. 13 ) under the excitation signal transmitted by the feeding part 108 . The center frequency of the first resonance mode is around 6.9 GHz. The first radiating arm 21 and the second radiating arm 22 are used to generate a second resonance mode (the second concave curve in FIG. 13 ) under the excitation signal transmitted by the feeding part 108 . The center frequency of the second resonance mode is around 7.8 GHz. The frequency bands covered by the first resonant mode and the second resonant mode include 6.5 GHz to 9 GHz (taking the vertical axis -5 dB as a reference value), and this frequency band can be used in the working frequency band of the UWB antenna to meet the use requirements in UWB antenna technology. But not limited to the above-mentioned frequency band value and bandwidth value, by adjusting the arm lengths of the first radiating arm 21 and the second radiating arm 22, the center frequency of the second resonant mode can be adjusted, and by adjusting the third radiating arm 25. The arm length of the fourth radiating arm 26 can adjust the center frequency of the first resonance mode, so as to adjust the frequency band and bandwidth covered by the radiating unit 20 . In other words, by designing the arm lengths of the first radiating arm 21, the second radiating arm 22, the third radiating arm 25, and the fourth radiating arm 26, the frequency band covered by the radiating unit 20 can be adjusted and bandwidth.

By arranging the shorter third radiating arm 25 and the fourth radiating arm 26 between the longer first radiating arm 21, the second radiating arm 22 and the chamfered side, it is possible to Effectively utilize the space between the longer first radiating arm 21, the second radiating arm 22 and the chamfered edge, and also reduce the shorter length of the third radiating arm 25, the fourth radiating arm The arm 26 is arranged on the longer first radiating arm 21 and the second radiating arm 22 to interfere with each other and increase the isolation. Such a reasonable layout realizes that the radiating unit 20 is a dual-frequency antenna. With a wider bandwidth, the isolation between the radiating arms can be realized as much as possible and the space occupied by the radiating unit 20 can be reduced.

FIG. 14 is an S-parameter curve of the four radiation units 20 in the antenna assembly 100 provided by the embodiment of the present application. In FIG. 14 , S1 is a collection of S-parameter curves of the four radiation units 20 . It can be seen from S1 that the S-parameter curves of the four radiation units 20 are very similar, or even coincident. The four radiating units 20 all generate two resonant modes, and the resonant frequencies of the resonant modes generated by the four radiating units 20 are all the same. For example, in FIG. 14 , the resonant frequency of the first resonant mode is about 6.3 GHz, The resonant frequency of the second resonant mode is about 8.2 GHz, and the frequency bands covered by the four radiating units 20 all cover 5.9 GHz˜8.1 GHz (with the vertical axis −5 dB as a reference value). S1 is the isolation curve between the four radiating elements 20, the part below -30dB has been omitted, and when the isolation is below -15dB, it means that the radiating elements 20 of the antenna assembly 100 already have Higher isolation.

FIG. 15 is a curve of radiation efficiency and total efficiency of the four radiation units 20 in the antenna assembly 100 provided by the embodiment of the present application. In Fig. 15, S3 is a set of radiation efficiency curves of the four radiating units 20, it can be seen that the S3 curve is below -0.5dB, indicating that the four radiating units 20 all have relatively high radiation in the 6GHz-9GHz frequency band efficiency. S4 is a collection of total efficiency curves of the four radiating units 20 . It can be seen that the curves of S4 are below -0.5dB, indicating that the four radiating units 20 have relatively high total efficiency in the 6GHz-9GHz frequency band. It can be seen from FIG. 14 and FIG. 15 that the antenna assembly 100 provided by the embodiment of the present application can cover the frequency bands of CH5 (channel 5) and CH9 (channel 9) of the UWB antenna.

The specific structure of the adjustment module 40 and the specific structure of the adjustment module 40 and the electrical connection between different radiation units 20 or radiation unit groups (including at least two radiation units 20 ) and the adjustment module 40 are switched by the switch module below in conjunction with the accompanying drawings. Modal for example.

Please refer to FIG. 16 , the antenna assembly 100 further includes a controller (not shown) and a first switch module P electrically connected to the controller. The first switch module P is configured to select the adjustment module 40 to conduct with any at least two of the radiation units 20 under the action of the controller.

Specifically, the first switch module P is used to select at least two of the radiation units 20 to conduct with the adjustment module 40 among the plurality of radiation units 20, so as to realize the adjustment module 40 for the above-mentioned The radiating unit 20 performs phase and/or power adjustment. Wherein, when the adjustment module 40 adjusts the phase of the electrically connected radiation unit 20, the adjustment module 40 is used to realize that the phase of the electrically connected radiation unit 20 is the same, incremental or Decrement etc. When the adjustment module 40 adjusts the power of the electrically connected radiation units 20 , the adjustment module 40 is used to realize the same or different powers of the electrically connected radiation units 20 . The controller is electrically connected to the adjustment module 40 for controlling the adjustment module 40 to adjust the phase and/or power of the electrically connected radiation unit 20 .

In this embodiment, the multiple radiation units 20 include the first radiation unit 20a, the second radiation unit 20b, the third radiation unit 20c and the fourth radiation unit 20d.

The adjustment input terminal of the adjustment module 40 is electrically connected to the radio frequency chip module 30, and the adjustment module 40 has a plurality of adjustment output terminals. In this embodiment, the number of the adjustment output terminals is the same as the number of the radiation units 20 .

Optionally, the first switch module P includes a plurality of first switch units. Each of the first switch units is electrically connected between one of the radiation units 20 and an adjustment output terminal of the adjustment module 40 . The controller is used to control the turn-on and turn-off of a plurality of the first switch units, so as to control any at least two of the radiation units 20 among the four radiation units 20 to be connected to the adjustment module 40 . It should be noted that the adjustment output end and the adjustment input end defined in this application are described as the path of transmitting signals from the radio frequency chip module 30 toward the radiation unit 20, and when the radiation unit 20 is directed toward the radio frequency chip module When the signal is transmitted in the direction of 30, the adjustment output end is the signal input end, and the adjustment input end is the signal output end.

In a first implementation manner of the adjustment module 40 , please refer to FIG. 17 , the adjustment module 40 includes a plurality of phase adjustment modules 41 . In this embodiment, the phase adjustment module 41 is a phase shifter, and the number of the phase shifters corresponds to the number of the radiation units 20 one by one, specifically the first phase shifter

second phase shifter

third phase shifter

and the fourth phase shifter

In this embodiment, the plurality of first switch units are respectively a first sub-switch P1, a second sub-switch P2, a third sub-switch P3 and a fourth sub-switch P4. The first phase shifter

One end of the radio frequency chip module 30 is electrically connected to the first phase shifter

The other end of the first sub-switch P1 is electrically connected to one end of the first sub-switch P1, and the other end of the first sub-switch P1 is electrically connected to the first radiation unit 20a. The second phase shifter

One end of the RF chip module 30 is electrically connected to the second phase shifter

The other end of the second sub-switch P2 is electrically connected to one end of the second sub-switch P2, and the other end of the second sub-switch P2 is electrically connected to the second radiation unit 20b. The third phase shifter

One end of the RF chip module 30 is electrically connected to the third phase shifter

The other end of the third sub-switch P3 is electrically connected to one end of the third sub-switch P3, and the other end of the third sub-switch P3 is electrically connected to the third radiation unit 20c. The fourth phase shifter

One end of the radio frequency chip module 30 is electrically connected to the fourth phase shifter

The other end of the fourth sub-switch P4 is electrically connected to one end of the fourth sub-switch P4, and the other end of the fourth sub-switch P4 is electrically connected to the fourth radiation unit 20d.

In another embodiment, please refer to FIG. 18, the first switch unit can also be arranged between the radio frequency chip module 30 and the phase shifter, in other words, the first sub-switch P1 is electrically connected to the radio frequency chip module 30 and the first phase shifter

Between, the second sub-switch P2 is electrically connected to the radio frequency chip module 30 and the second phase shifter

Between, the third sub-switch P3 is electrically connected to the radio frequency chip module 30 and the third phase shifter

Between, the fourth sub-switch P4 is electrically connected to the radio frequency chip module 30 and the fourth phase shifter

between.

The controller is electrically connected to the first sub-switch P1, the second sub-switch P2, the third sub-switch P3 and the fourth sub-switch P4. The controller controls part of the radiation by controlling the on and off of the first sub-switch P1, the second sub-switch P2, the third sub-switch P3 and the fourth sub-switch P4. Unit 20 participates in phase adjustment. The controller is electrically connected to the phase adjustment module 41 , and the phase adjustment module 41 adjusts the phases of the electrically connected radiation units 20 to be the same, increase or decrease, etc. under the action of the controller. In this embodiment, the phase adjustment module 41 is used to adjust the phases of the plurality of radiation units 20 that are electrically connected to be the same, so that the radiation units 20 with the same phase form beamforming to cover different angular regions , to achieve multi-directional directional coverage or quasi-isotropic coverage, improve the coverage of ranging and angle measurement, and further improve the accuracy of ranging and angle measurement.

It can be understood that since the first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c, and the fourth radiating unit 20d are arranged omnidirectionally on the X-Y plane, there is no need to set them in some scenarios All the radiating units 20 are working, so the controller controls the switching on or off of a plurality of the first switch units to realize the switching of different radiating units 20 in different time periods .

Of course, in other implementation manners, the number of phase shifters may be smaller than the number of the radiation units 20 . In other words, the phase adjustment module 41 only switches and regulates a part of the radiating units 20 among the plurality of radiating units 20, and the other part of the radiating units 20 can be directly electrically connected to the radio frequency chip module 30 or through a switch circuit. The radio frequency chip module 30 is connected.

In a second implementation manner of the regulating module 40 , please refer to FIG. 19 , the regulating module 40 includes a power regulating module 42 . In this embodiment, the power adjustment module 42 is a power splitter. The power input end of the power divider is electrically connected to the radio frequency chip module 30 . The power divider has multiple power output terminals, and the number of power output terminals of the power divider is the same as the number of the radiation units 20, specifically the first power output terminal, the second power output terminal, the third power output terminal and the fourth power output terminal. power output. It should be noted that the output end and the input end defined in this application are described as the path for transmitting signals from the radio frequency chip module 30 to the radiation unit 20 .

In this embodiment, the plurality of first switch units are respectively a first sub-switch P1, a second sub-switch P2, a third sub-switch P3 and a fourth sub-switch P4. The power input end is electrically connected to the radio frequency chip module 30, the first power output end is electrically connected to one end of the first sub-switch P1, and the other end of the first sub-switch P1 is electrically connected to the first radiation unit 20a. The second power output end is electrically connected to one end of the second sub-switch P2, and the other end of the second sub-switch P2 is electrically connected to the second radiation unit 20b. The third power output end is electrically connected to one end of the third sub-switch P3, and the other end of the third sub-switch P3 is electrically connected to the third radiation unit 20c. The fourth power output end is electrically connected to one end of the fourth sub-switch P4, and the other end of the fourth sub-switch P4 is electrically connected to the fourth radiation unit 20d, so that the one-to-four power divider includes one-to-two, One point three power splitter. The controller is electrically connected to the power adjustment module 42 , and the power adjustment module 42 adjusts the power amplitudes of the electrically connected radiation units 20 to be the same or different under the action of the controller. Optionally, the above-mentioned power splitter may be an equal-power power splitter or an unequal-power power splitter. When the power splitter is an equal-power power splitter, the power adjustment module 42 adjusts the power amplitudes of the electrically connected radiation units 20 to be the same. When the power divider is a power divider with unequal power, the power adjustment module 42 adjusts the power amplitudes of the radiation units 20 that are electrically connected to be different. In this implementation manner, the power divider is an equal power power divider as an example for illustration.

The controller is electrically connected to the first sub-switch P1, the second sub-switch P2, the third sub-switch P3 and the fourth sub-switch P4. The controller controls which of the radiation Unit 20 participates in power regulation. The power adjustment module 42 adjusts the power of the multiple radiation units 20 to be the same or different, so as to increase the detection diversity of the antenna assembly 100 and improve its application scenarios.

Certainly, in other implementation manners, the number of power output terminals may be smaller than the number of the radiation units 20 .

In a third implementation manner of the adjustment module 40 , please refer to FIG. 20 , the adjustment module 40 includes the power adjustment module 42 and a plurality of phase adjustment modules 41 . The power adjustment module 42 has a power input terminal and a plurality of power output terminals. The power input end is used to electrically connect the radio frequency chip module 30 . Each power output end is used to electrically connect one end of one phase adjustment module 41 . The other end of the phase adjustment module 41 is used to electrically connect one of the radiation units 20 . Wherein, the controller is electrically connected to the power adjustment module 42 and the phase adjustment module 41 to control the power adjustment module 42 to adjust the power and the phase adjustment module 41 to adjust the phase. The power adjustment module 42 is used to adjust the power amplitudes of the electrically connected radiation units 20 to be the same or different. The phase adjustment module 41 is used to adjust the phases of the electrically connected radiation units 20 to be the same, to increase or decrease, and so on.

The power adjustment module 42 is a power splitter. The power input end of the power divider is electrically connected to the radio frequency chip module 30 . The power divider has multiple power output terminals, and the number of power output terminals of the power divider is the same as the number of the radiation units 20, specifically the first power output terminal, the second power output terminal, the third power output terminal and the fourth power output terminal. power output.

The phase adjustment module 41 includes a plurality of phase shifters, the number of the phase shifters corresponds to the number of the radiation units 20 one by one, specifically the first phase shifter

second phase shifter

third phase shifter

and the fourth phase shifter

In this embodiment, the plurality of first switch units are respectively a first sub-switch P1, a second sub-switch P2, a third sub-switch P3 and a fourth sub-switch P4.

In the implementation manner of the first position of the first switch module P, please refer to FIG. 20 , the first switch module P includes a plurality of the first switch units. One end of the first switch unit is electrically connected to the power output end, and the other end of the first switch unit is electrically connected to the phase adjustment module 41 . The power input end is electrically connected to the radio frequency chip module 30, the first power output end is electrically connected to one end of the first sub-switch P1, and the other end of the first sub-switch P1 is electrically connected to the first phase shifter

At one end, the first phase shifter

The other end is electrically connected to the first radiating unit 20a. The second power output end is electrically connected to one end of the second sub-switch P2, and the other end of the second sub-switch P2 is electrically connected to the second phase shifter

at one end, the second phase shifter

The other end is electrically connected to the second radiation unit 20b. The third power output end is electrically connected to one end of the third sub-switch P3, and the other end of the third sub-switch P3 is electrically connected to the third phase shifter

at one end, the third phase shifter

The other end of the radiating element is electrically connected to the third radiating unit 20c. The fourth power output end is electrically connected to one end of the fourth sub-switch P4, and the other end of the fourth sub-switch P4 is electrically connected to the fourth phase shifter

At one end, the fourth phase shifter

The other end of the radiating element is electrically connected to the fourth radiating unit 20d.

Further, referring to FIG. 21, when the first switch module P is located between the power adjustment module 42 and the phase adjustment module 41, and the power adjustment module 42 is a microstrip power splitter, the The power regulation module 42 may form an integral body for the first switch module P. For example, the power adjustment module 42 has a power input terminal and four power output terminals, wherein a first switch unit is provided on the branch where each power output terminal is located, such as the first sub-switch P1, the second sub-switch P1, and the second sub-switch P1 respectively. The switch P2, the third sub-switch P3 and the fourth sub-switch P4, in other words, the first switch unit can be set between the power input terminal and the power output terminal, so as to realize the selection of the power output terminal and realize one-to-two, one-to-three , One point four and other power distribution.

In the implementation manner of the second position of the first switch module P, please refer to FIG. 22 , the first switch module P includes a plurality of the first switch units. One end of the first switch unit is electrically connected to the phase adjustment module 41 , and the other end of the first switch unit is electrically connected to the radiation unit 20 . In this embodiment, the number of the first switching units is the same as the number of the phase adjustment modules 41 . The power input end is electrically connected to the radio frequency chip module 30, and the first power output end is electrically connected to the first phase shifter

At one end, the first phase shifter

The other end of the first sub-switch P1 is electrically connected to one end of the first sub-switch P1, and the other end of the first sub-switch P1 is electrically connected to the first radiation unit 20a. The second power output terminal is electrically connected to the second phase shifter

at one end, the second phase shifter

The other end of the second sub-switch P2 is electrically connected to one end of the second sub-switch P2, and the other end of the second sub-switch P2 is electrically connected to the second radiation unit 20b. The third power output terminal is electrically connected to the third phase shifter

at one end, the third phase shifter

The other end of the third sub-switch P3 is electrically connected to one end of the third sub-switch P3, and the other end of the third sub-switch P3 is electrically connected to the third radiation unit 20c. The fourth power output terminal is electrically connected to the fourth phase shifter

At one end, the fourth phase shifter

In this embodiment, the controller not only controls on-off of the plurality of first switch units, but also electrically connects the phase adjustment module 41 and the power adjustment module 42 . The controller is also used to control the phase adjustment module 41 to adjust the phase of the electrically connected radiation unit 20 to be the same, increase or decrease, etc.; the controller is also used to control the power adjustment module 42 to adjust the phase of the electrically connected The power amplitudes of the connected radiation units 20 are the same or different to form different modes, so as to be applied to different ranging and angle measuring scenarios, and to improve detection efficiency and detection accuracy in ranging and angle measuring scenarios. The specific mode will be described in detail later.

Further, referring to FIG. 23 , on the basis that the adjustment module 40 is provided between the radio frequency chip module 30 and the radiation unit 20 , the antenna assembly 100 further includes a connection module and a second switch module K.

The connection module includes a plurality of electrical connection lines. In this embodiment, the number of the radiation units 20 is four. The plurality of electrical connection lines include a first electrical connection line e1 , a second electrical connection line e2 , a third electrical connection line e3 , a fourth electrical connection line e4 and a fifth electrical connection line e5 . One end of the first electrical connection line e1 is used to electrically connect the first radiation unit 20a. One end of the second electrical connection line e2 is used to electrically connect the second radiation unit 20b. One end of the third electrical connection line e3 is used to electrically connect the third radiation unit 20c. One end of the fourth electrical connection line e4 is used to electrically connect the fourth radiation unit 20d. One end of the fifth electrical connection line e5 is used to electrically connect the signal input end of the adjustment module 40 .

The connection end of the second switch module K is electrically connected to the radio frequency chip module 30 . The second switch module K is electrically connected to the controller. Under the action of the controller, the selection end of the second switch module K selects any one of the input end of the adjustment module 40 and a plurality of electrical connection lines to conduct. Optionally, the second switch module K includes a single-pole multi-throw switch. In this embodiment, the number of the radiation units 20 is four. The regulating module 40 has an input. Therefore, the second switch module K has five selection terminals (respectively K1 , K2 , K3 , K4 , K5 ) for selecting between four input terminals of the radiation unit 20 and the adjustment module 40 .

Referring to FIG. 23 , it is illustrated by taking the adjustment module 40 including the phase adjustment module 41 and the power adjustment module 42 as an example.

The second switch module K includes a single pole double throw switch and a single pole three throw switch. Wherein, the connection end of the SPDT switch is electrically connected to the radio frequency chip module 30, and the selection end of the SPDT switch is used to select one end electrically connected to the first electrical connection line e1 under the action of the controller and one end of the third electrical connection line e3. The connection end of the single-pole three-throw switch is electrically connected to the radio frequency chip module 30, and the selection end of the single-pole three-throw switch is used to select one end electrically connected to the second electrical connection line e2 under the action of the controller. One end of the fourth electrical connection line e4 and one end of the fifth connection line.

Please refer to FIG. 23 , the antenna assembly 100 further includes a third switch module N. The third switch module N includes a plurality of third switch units. The third switch unit is electrically connected to the controller. A connection end of each third switch unit is electrically connected to one radiation unit 20 . The selection end of the third switch unit is used for selectively electrically connecting the electrical connection line or the adjustment module 40 under the action of the controller.

Referring to FIG. 23 , it is illustrated by taking the adjustment module 40 including the phase adjustment module 41 and the power adjustment module 42 as an example. The plurality of third switch units include a fifth sub-switch N1, a sixth sub-switch N2, a seventh sub-switch N3 and an eighth sub-switch N4. In this embodiment, the fifth sub-switch N1 , the sixth sub-switch N2 , the seventh sub-switch N3 and the eighth sub-switch N4 are all SPDT switches. The fifth sub-switch N1 , the sixth sub-switch N2 , the seventh sub-switch N3 and the eighth sub-switch N4 all have a connection terminal 0 , a selection terminal 1 and a selection terminal 2 .

Wherein, the connection terminal 0 of the fifth sub-switch N1, the connection terminal 0 of the sixth sub-switch N2, the connection terminal 0 of the seventh sub-switch N3 and the connection terminal 0 of the eighth sub-switch N4 are respectively The first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c and the fourth radiating unit 20d are electrically connected. The selection end of the fifth sub-switch N1 is electrically connected to the first electrical connection line e1 or the first phase shifter under the action of the controller

Specifically, the fifth sub-switch N1 has a selection terminal 1 and a selection terminal 2, wherein the selection terminal 1 of the fifth sub-switch N1 is electrically connected to the first electrical connection line e1, and the fifth sub-switch N1 The select terminal 2 is electrically connected to the first phase shifter

The controller is electrically connected to the fifth sub-switch N1, and is used to control the connection terminal 0 and the selection terminal 1 of the fifth sub-switch N1 to conduct or control the connection terminal 0 and the selection terminal 2 of the fifth sub-switch N1 to conduct Pass.

The selection end of the sixth sub-switch N2 is electrically connected to the second electrical connection line e2 or the second phase shifter under the action of the controller

Specifically, the sixth sub-switch N2 has a selection terminal 1 and a selection terminal 2, wherein the selection terminal 1 of the sixth sub-switch N2 is electrically connected to the second electrical connection line e2, and the sixth sub-switch N2 The select terminal 2 is electrically connected to the second phase shifter

The controller is electrically connected to the sixth sub-switch N2, and is used to control the connection between the connection terminal 0 and the selection terminal 1 of the sixth sub-switch N2, or control the connection between the connection terminal 0 and the selection terminal 2 of the sixth sub-switch N2. Pass.

The selection end of the seventh sub-switch N3 is electrically connected to the third electrical connection line e3 or the third phase shifter under the action of the controller

Specifically, the seventh sub-switch N3 has a selection terminal 1 and a selection terminal 2, wherein the selection terminal 1 of the seventh sub-switch N3 is electrically connected to the third electrical connection line e3, and the seventh sub-switch N3 The select terminal 2 is electrically connected to the third phase shifter

The controller is electrically connected to the seventh sub-switch N3, and is used to control the connection terminal 0 and the selection terminal 1 of the seventh sub-switch N3 to conduct or control the connection terminal 0 and the selection terminal 2 of the seventh sub-switch N3 to conduct Pass.

The selection end of the eighth sub-switch N4 is electrically connected to the fourth electrical connection line e4 or the fourth phase shifter under the action of the controller

Specifically, the eighth sub-switch N4 has a selection terminal 1 and a selection terminal 2, wherein the selection terminal 1 of the eighth sub-switch N4 is electrically connected to the fourth electrical connection line e4, and the eighth sub-switch N4 The select terminal 2 is electrically connected to the fourth phase shifter

The controller is electrically connected to the eighth sub-switch N4, and is used to control the connection between the connection terminal 0 and the selection terminal 1 of the eighth sub-switch N4 to conduct or to control the connection between the connection terminal 0 and the selection terminal 2 of the eighth sub-switch N4 to conduct. Pass.

When the adjustment module 40 is the phase adjustment module 41, and the first switch module P is electrically connected between the phase adjustment module 41 and the radiation unit 20, the first switch module P and the The third switch module N synthesizes a group of combining switches. In this implementation manner, there are four radiating units 20 , and the combining switches include four combining switches. Each combined switch is a single pole three throw switch. The connection end of the single-pole three-throw switch is electrically connected to the radiation unit 20, and the selection end of the single-pole three-throw switch is selected to be electrically connected to the electrical connection line, or electrically connected to the phase shifter, or to maintain the switch under the action of the controller. Disconnected state.

When the regulation module 40 is the power regulation module 42, and the first switch module P is electrically connected between the power regulation module 42 and the radiation unit 20, the first switch module P and the The third switch module N synthesizes a group of combining switches. In this implementation manner, there are four radiating units 20 , and the combining switches include four combining switches. Each combined switch is a single pole three throw switch. The connection end of the single-pole three-throw switch is electrically connected to the radiation unit 20, and the selection end of the single-pole three-throw switch is selected to be electrically connected to the electrical connection line, or electrically connected to the power output end, or to maintain the switch under the action of the controller. Disconnected state.

In the above, by combining the first switch module P and the third switch module N into the same switch module, the radiating unit 20 can choose to be directly electrically connected to the radio frequency chip module or choose to pass through the adjustment module. 40 is electrically connected to the radio frequency chip module 30, which also satisfies the need to select a part of the radiation units 20 to participate in the work among the plurality of radiation units 20, that is, to realize multiple control modes while reducing the number of control switching devices , reducing the area occupied by the control circuit, which is beneficial to reducing the overall size of the antenna assembly 100 .

In this application, the adjustment module 40 includes the phase adjustment module 41 and the power adjustment module 42, and the first switch module P is electrically connected between the power adjustment module 42 and the phase adjustment module 41 as an example. The working modes generated by the controller controlling the first switch module P, the second switch module K, and the third switch module N, and the application of the working modes are illustrated.

The controller is used to control the radiation unit 20 to switch among the first working mode, the second working mode, the third working mode and the fourth working mode. Wherein, the first working mode includes a working mode of any one of the multiple radiation units 20 . The second working mode includes a mode in which adjacent two of the radiation units 20 work with the same phase and the same amplitude. The third working mode includes a mode in which the plurality of radiation units 20 all work with the same phase and the same amplitude. The fourth working mode includes a mode in which multiple radiation units 20 work with increasing or decreasing phases and the same amplitude.

Specific control descriptions and examples of application scenarios are given below for the first working mode, the second working mode, the third working mode, and the fourth working mode.

Please refer to Table 1, combined with reference to FIG. 23 , the first working mode includes a first mode M1, a second mode M2, a third mode M3, and a fourth mode M4.

Wherein, the first mode M1 is that the first radiating unit 20a is directly electrically connected to the radio frequency chip module 30 through the first electrical connection line e1, and the second radiating unit 20b, the third radiating unit The working mode in which neither the unit 20c nor the fourth radiation unit 20d works. Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K1 in the second switch module K is turned on , expressed as "on" in Table 1, K2, K3, K4, and K5 are all non-conductive, and expressed as "-" in Table 1; P1, P2, P3, and P4 in the first switch module P are all off conduction, which is represented as "-" in Table 1; the selection terminal 1 of the fifth sub-switch N1 in the third switch module N is connected to the connection terminal 0, which is represented as "0-1" in Table 1, The sixth sub-switch N2 , the seventh sub-switch N3 , and the eighth sub-switch N4 are all inactive or non-energized states, which are represented as “0-x” in Table 1.

Wherein, the second mode M2 is that the second radiating unit 20b is directly electrically connected to the radio frequency chip module 30 through the second electrical connection line e2, and the first radiating unit 20a and the third radiating unit 20c And the working mode in which the fourth radiation unit 20d does not work. Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K2 in the second switch module K is turned on , expressed as "on" in Table 1, K1, K3, K4, and K5 are all non-conductive, and can also be expressed as a non-enabled or de-energized state, expressed as "-" in Table 1; the first switch module P1, P2, P3, and P4 in P are all off; the selection terminal 1 of the sixth sub-switch N2 in the third switch module N is connected to the connection terminal 0, and the fifth sub-switch N1, the sixth sub-switch N2 The selection terminals 2 of the seventh sub-switch N3 and the eighth sub-switch N4 are both connected to the connection terminal 0 .

Wherein, the third mode M3 is that the third radiating unit 20c is directly electrically connected to the radio frequency chip module 30 through the third electrical connection line e3, and the first radiating unit 20a and the second radiating unit 20b And the working mode in which the fourth radiation unit 20d does not work. Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K3 in the second switch module K is turned on , expressed as "on" in Table 1, K1, K2, K4, and K5 are all non-conductive, and expressed as "-" in Table 1; P1, P2, P3, and P4 in the first switch module P are all off conduction, represented as "-" in Table 1; selection terminal 1 of the seventh sub-switch N3 in the third switch module N conducts connection terminal 0, represented as "0-1" in Table 1; The fifth sub-switch N1 , the sixth sub-switch N2 and the eighth sub-switch N4 are all inactive or non-energized states, which are represented as “0-x” in Table 1.

Wherein, the fourth mode M4 is that the fourth radiating unit 20d is directly electrically connected to the radio frequency chip module 30 through the fourth electrical connection line e4, and the first radiating unit 20a and the second radiating unit 20b And the working mode in which the third radiation unit 20c is not working. Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K4 in the second switch module K is turned on , expressed as "on" in Table 1, K1, K2, K3, and K5 are all non-conductive, and expressed as "-" in Table 1; P1, P2, P3, and P4 in the first switch module P are all off conduction, which is represented as "-" in Table 1; the selection terminal 1 of the eighth sub-switch N4 in the third switch module N is connected to the connection terminal 0, which is represented as "0-1" in Table 1; The selection terminals 2 of the fifth sub-switch N1 , the sixth sub-switch N2 and the seventh sub-switch N3 are not enabled or powered, which are represented as “0-x” in Table 1.

Table 1

In Table 1, "on" means that the switch is in the on state, "-" means that the switch is in the off state, 0-1 means that the connection terminal 0 of the switch is connected to the selection terminal 1, and 0-2 represents the connection terminal of the switch 0 is connected to select terminal 2. 0°, 90°, 180°, 270°, -90°, -180°, -270° respectively represent the phase value adjusted by the phase shifter.

Please refer to Fig. 24 to Fig. 27, Fig. 24 to Fig. 27 respectively show the 6.5GHz of the first mode M1, the second mode M2, the third mode M3, and the fourth mode M4 direction map. It can be seen from Fig. 24 to Fig. 27 that when the first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c, and the fourth radiating unit 20d are turned on individually, they respectively go to phi=- Radiation in 45°, 45°, 135°, -135° directions. The signal of each radiating unit can cover a range of 90°. Each mode has a higher gain in the directional direction, that is, to achieve directional coverage, and the controller controls the first switch module P, the second switch module K and the third switch module N to switch the The first modal M1, the second modal M2, the third modal M3, and the fourth modal M4 realize directional coverage in multiple directions, thereby realizing omnidirectional ranging detection, and each modal In this state, the radiation units 20 all have relatively high gain, that is, have relatively high detection accuracy. The ranging detection can be applied to the aforementioned object-finding scenarios, indoor positioning scenarios, and the like.

In the application of angle measurement (for example, in the scene of remote control smart home appliances), two adjacent radiation unit pairs can be switched for angle measurement, that is, the first radiation unit 20a and the second radiation unit 20b, the second radiation unit 20b and the third radiation unit The radiation unit 20c, the third radiation unit 20c and the fourth radiation unit 20d, the fourth radiation unit 20d and the first radiation unit 20a. That is, switching on the first mode M1 and the second mode M2, or switching on the second mode M2 and the third mode M3, or switching on the third mode M3 and the the fourth mode M4, or switch between the first mode M1 and the fourth mode M4. By switching on (the first mode M1 and the second mode M2)+(the third mode M3 and the fourth mode M4) or (the second mode M2 and the The third mode M3)+(the first mode M1 and the fourth mode M4) completes angle measurement within a horizontal 360° range.

Please refer to FIG. 28 , which is a graph of the phase difference of arrival (PDOA) of the first radiating unit 20a and the second radiating unit 20b. Among them, the abscissa represents the azimuth, and the ordinate represents the PDOA value. Each series represents the PDOA curve at different elevation angles. The azimuth ranges from 0° to 180°, and the elevation angle ranges from -90° to 90°. It can be seen that the PDOA curve is almost monotonous, and almost overlaps at different pitch angles, indicating that the curve convergence is good and the angle measurement accuracy is high. After the RF chip module 30 obtains the PDOA value, it can judge the AoA (direction of arrival) according to the PDOA curve to realize the angle measurement function.

Please refer to Table 1, combined with reference to FIG. 23 , the second working mode includes the fifth mode M5, the sixth mode M6, the seventh mode M7, and the eighth mode M8.

Wherein, the fifth mode M5 is that the first radiating unit 20a, the second radiating unit 20b are directly electrically connected to the radio frequency chip module 30 through the adjustment module 40, and the third radiating unit 20c, In the working mode in which none of the fourth radiation units 20d work, the adjustment module 40 controls the radiation units 20 to which it is electrically connected to have the same amplitude (that is, the same power). Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K5 in the second switch module K is turned on , expressed as "on" in Table 1, K1, K2, K3, K4 are not conducting, expressed as "-" in Table 1; In the third switch module N, the selection terminal 2 of the fifth sub-switch N1 in the fifth sub-switch N1 is connected to the connection terminal 0, It is expressed as "0-2" in Table 1; the selection terminal 2 in the sixth sub-switch N2 is connected to the connection terminal 0, and it is expressed as "0-2" in Table 1; the seventh sub-switch N3 and the The above-mentioned eighth sub-switches N4 are all inactive or non-energized states, which are represented as “0-x” in Table 1.

Wherein, the sixth mode M6 is that the second radiating unit 20b, the third radiating unit 20c are directly electrically connected to the radio frequency chip module 30 through the adjustment module 40, and the first radiating unit 20a, In the working mode in which none of the fourth radiation units 20d work, the adjustment module 40 controls the radiation units 20 to which it is electrically connected to have the same amplitude (that is, the same power). Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K5 in the second switch module K is turned on , expressed as "on" in Table 1, K1, K2, K3, K4 are not conducting, expressed as "-" in Table 1; P2, P3 conduction in the first switch module P, in Table 1 In the third switch module N, the selection terminal 2 of the sixth sub-switch N2 in the sixth sub-switch N2 is connected to the connection terminal 0, It is expressed as "0-2" in Table 1; the selection terminal 2 in the seventh sub-switch N3 is connected to the connection terminal 0, which is expressed as "0-2" in Table 1; the fifth sub-switch N1 and the The above-mentioned eighth sub-switches N4 are all inactive or non-energized states, which are represented as “0-x” in Table 1.

Wherein, the seventh mode M7 is that the third radiating unit 20c, the fourth radiating unit 20d are directly electrically connected to the radio frequency chip module 30 through the adjustment module 40, and the first radiating unit 20a, In the working mode in which none of the second radiation units 20b are working, the adjustment module 40 controls the radiation units 20 to which it is electrically connected to have the same amplitude (that is, the same power). Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K5 in the second switch module K is turned on , expressed as "on" in Table 1, K1, K2, K3, K4 are not conducting, expressed as "-" in Table 1; P3, P4 in the first switch module P are conducting, in Table 1 In the third switch module N, the selection terminal 2 of the seventh sub-switch N3 is connected to the connection terminal 0 , which is represented as "0-2" in Table 1; the selection terminal 2 in the eighth sub-switch N4 is connected to the connection terminal 0, which is represented as "0-2" in Table 1; the fifth sub-switch N1 and The sixth sub-switches N2 are all inactive or non-energized states, which are represented as “0-x” in Table 1.

Wherein, the eighth mode M8 is that the first radiating unit 20a, the fourth radiating unit 20d are directly electrically connected to the radio frequency chip module 30 through the adjustment module 40, and the second radiating unit 20b, In the working mode in which none of the third radiating units 20c is working, the regulating module 40 controls the radiating units 20 to which it is electrically connected to have the same amplitude (that is, equal power). Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K5 in the second switch module K is turned on, as shown in Table 1 is "on", K1, K2, K3, and K4 are not conducting, which is represented as "-" in Table 1; P1 and P4 in the first switch module P are conducting, which is represented as "passing" in Table 1 , P3 and P2 are both non-conductive, which is expressed as "-" in Table 1; in the third switch module N, the selection terminal 2 of the fifth sub-switch N1 is connected to the connection terminal 0, which is expressed as "-" in Table 1 0-2"; the selection terminal 2 of the eighth sub-switch N4 is connected to the connection terminal 0, which is expressed as "0-2" in Table 1; the seventh sub-switch N3 and the sixth sub-switch N2 are both Disabled or unpowered state, denoted as "0-x" in Table 1.

Certainly, in other implementation manners, the controller may also control the two radiating units 20 arranged diagonally to be turned on at the same time, for example, the first radiating unit 20a and the third radiating unit 20c, the second radiating unit 20 The radiation unit 20b and the fourth radiation unit 20d. In addition, the controller can also control any three of the radiation units 20 to be turned on at the same time, so as to generate more modes and realize more forms of signal coverage.

Please refer to Fig. 29 to Fig. 32, Fig. 29 to Fig. 32 respectively show the 6.5 GHz of the fifth mode M5, the sixth mode M6, the seventh mode M7, and the eighth mode M8 direction map. It can be seen from FIG. 28 to FIG. 31 that two adjacent radiation units of the first radiation unit 20a, the second radiation unit 20b, the third radiation unit 20c, and the fourth radiation unit 20d are turned on at the same time , the phase adjustment module 41 controls the same phase, and the power adjustment module 42 controls the power to be the same. In this way, the two radiation units 20 that are turned on at the same time form the same and equal amplitude feed, and the direction of the maximum gain of the obtained pattern points to The middle direction of the two radiating units 20 increases the covered angular area.

In the application of ranging (such as object finding and indoor positioning scenarios), the direction diagrams of the fifth mode M5, the sixth mode M6, the seventh mode M7, and the eighth mode M8 The directions (directions) of the maximum gain of radiate toward phi=0°, 90°, 180°, and 270° respectively. The maximum gain direction (direction) of the directional diagrams of the fifth modal M5, the sixth modal M6, the seventh modal M7, and the eighth modal M8 is the same as that of the first modal M1, The maximum gain directions (pointing) of the directivity diagrams of the second mode M2, the third mode M3, and the fourth mode M4 are complementary, and through mode switching, it can be realized that the antenna assembly 100 has at least 8 pointing directions (-45 °, 0°, 45°, 90°, 135°, 180°, -135°, 270°), that is, multi-directional directional coverage, which increases the angle of coverage, thereby achieving high-precision detection for all directions .

Similarly, the PDOA curves of M2 and M3, M3 and M4, M4 and M1 can also be obtained to realize omnidirectional angle measurement.

Please refer to Table 1, combined with reference to FIG. 33 , FIG. 34 and FIG. 35 , the third working mode includes the ninth mode M9. FIG. 33 , FIG. 34 and FIG. 35 are three perspective views of the directional pattern of the ninth mode M9 at 6.5 GHz. Wherein, the ninth mode M9 is that the first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c, and the fourth radiating unit 20d are all directly electrically connected through the regulating module 40. The radio frequency chip module 30 is connected, and the adjustment module 40 controls the radiation unit 20 to which it is electrically connected to have the same amplitude (that is, the power is equal). Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K5 in the second switch module K is turned on , means "on" in Table 1, K1, K2, K3, and K4 are all off, and "-" in Table 1; P1, P2, P3, and P4 in the first switch module P are all turned on, In Table 1, it means "on"; in the third switch module N, the fifth sub-switch N1, the sixth sub-switch N2, the seventh sub-switch N3 and the eighth sub-switch N4 are all selected Terminal 2 is connected to terminal 0, denoted "0-2" in Table 1.

Please refer to Figure 36, due to the equal-amplitude and in-phase feed, the four radiating elements form a circular current (refer to the large arrow on the periphery of the floor), which can be equivalent to a magnetic current along the z-axis, thus producing a "sweet" like a dipole circle" radiation. It can be seen from the direction diagram that the directional direction covered by the high-gain signal of the ninth mode M9 is inclined relative to the X-Y plane, and has at least 8 directional directions, so the ninth mode M9 itself has a higher signal Coverage, and the ninth mode M9 can also be combined with the first eight modes to switch, improve the omnidirectional coverage of the spherical range, and improve the detection accuracy of the spherical range. In addition, since the four radiation units 20 in the ninth mode M9 are all working, the ninth mode M9 can be applied to the measured angle (for example, in an object-finding scene), and can also achieve all-round accurate measurement. horn.

Please refer to Table 1, referring to FIG. 37 and FIG. 38 , the fourth working mode includes the tenth mode M10 and the eleventh mode M11. FIG. 37 is a directional diagram of the tenth mode M10 at 6.5 GHz. FIG. 38 is a directional diagram of the eleventh mode M11 at 6.5 GHz. Wherein, the tenth mode M10 is that the first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c, and the fourth radiating unit 20d are all directly electrically connected through the regulating module 40. The radio frequency chip module 30 is connected, and the adjustment module 40 controls the radiating unit 20 to which it is electrically connected to have equal amplitudes and incremental phases. Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K5 in the second switch module K is turned on , means "on" in Table 1, K1, K2, K3, and K4 are all off, and "-" in Table 1; P1, P2, P3, and P4 in the first switch module P are all turned on, In Table 1, it means "on"; in the third switch module N, the fifth sub-switch N1, the sixth sub-switch N2, the seventh sub-switch N3 and the eighth sub-switch N4 are all selected Terminal 2 is connected to terminal 0, denoted "0-2" in Table 1. first phase shifter

second phase shifter

third phase shifter

fourth phase shifter

The phase shift values are 0°, 90°, 180°, 270°, respectively.

Wherein, the eleventh mode M11 is that the first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c, and the fourth radiating unit 20d all pass through the adjustment module 40 directly The radio frequency chip module 30 is electrically connected, and the adjustment module 40 controls the radiating unit 20 to which it is electrically connected to have equal amplitudes and progressively decreasing phases. Specifically, the first switch module P, the second switch module K, and the third switch module N have the following states under the action of the controller: K5 in the second switch module K is turned on, as shown in Table 1 "On", K1, K2, K3, and K4 are all non-conductive, which means "-" in Table 1; P1, P2, P3, and P4 in the first switch module P are all conductive, which means "-" in Table 1 In the third switch module N, the fifth sub-switch N1, the sixth sub-switch N2, the seventh sub-switch N3 and the eighth sub-switch N4 all select terminal 2 to conduct the connection terminal 0, In Table 1, "0-2" is represented. first phase shifter

second phase shifter

third phase shifter

fourth phase shifter

The phase shift values are 0°, -90°, -180°, -270°, respectively.

The tenth mode M10 and the eleventh mode M11 are equal amplitudes of the first radiation unit 20a, the second radiation unit 20b, the third radiation unit 20c, and the fourth radiation unit 20d The modes obtained when the phase sequentially rotates the feed are isotropic radiation.

It can be seen from Fig. 37 and Fig. 38 that both the tenth mode M10 and the eleventh mode M11 have relatively good gain in the three-dimensional spherical direction, that is, they can realize omni-directional signal coverage and improve the measurement angle. and ranging detection coverage, further improving the accuracy of ranging and angle measurement. For example, in the tenth mode M10, the maximum gain of the antenna assembly 100 in different directions of the spherical radiation pattern is about 3dBi, the minimum gain is about -4dBi, and the roundness is about 7dB. Therefore, using these modes can greatly increase the Large draw distance and its uniformity.

To sum up, the first radiating unit 20a, the second radiating unit 20b, the third radiating unit 20c, and the fourth radiating unit 20d can be used for the ranging and angle measuring function of UWB technology at the same time, through the The adjustment module 40 feeds the same or different phases to the radiating unit 20, and for beamforming, the azimuth extended-range coverage (such as modes M5, M6, M7, M8) can be specified, or omni-directional coverage (such as the modes M9 , M10, M11).

In addition, the second embodiment of the present application also provides the antenna assembly 100, the antenna assembly 100 includes the reference floor 10, a plurality of the radiation units 20, the radio frequency chip module 30, the adjustment module 40 and the first switch control module. A plurality of radiation units 20 are arranged around the side of the reference floor 10 . The radio frequency chip module 30 is arranged opposite to the surface of the reference floor 10 . The adjustment module 40 is disposed opposite to the surface of the reference floor 10 . The adjustment module 40 is used for electrically connecting the radiation unit 20 to adjust the phase and/or power of the radiation unit 20 .

The reference floor 10 provided in this embodiment, the structure of the radiation unit 20, the layout of the radiation unit 20, the type and position of the radio frequency chip module 30, the structure and position of the adjustment module 40, etc. may refer to The reference floor 10 in the antenna assembly 100 provided in the first embodiment, the structure of the radiation unit 20, the layout of the radiation unit 20, the type and position of the radio frequency chip module 30, the adjustment module 40 structure and location.

The first switch control module is arranged opposite to the surface of the reference floor 10 . The controller is electrically connected to the first switch control module. The controller is used to control the first switch control module to communicate with the adjustment module 40 and the radio frequency chip module 30 or communicate with at least one of the radiation unit 20 and the radio frequency chip module 30 . The function and structure of the first switch control module are substantially the same as those of the second switch module K in the first embodiment, so the specific structure of the first switch control module can refer to the description in the first embodiment The specific structure of the second switch module K.

The connection end of the first switch control module is electrically connected to the radio frequency chip module 30, and the selection end of the first switch control module is selected among the adjustment module 40 and the plurality of radiation units 20 under the action of the controller. Either one is connected.

In the antenna assembly 100 provided in this embodiment, a first switch control module is set between the radio frequency chip module 30 and the radiating unit 20 to switch between the adjustment module 40 or the direct electrical connection, so as to realize a single The radiating unit 20 works or multiple radiating units 20 form a phased array to improve the functional diversity of the antenna assembly 100 .

Further, the antenna assembly 100 further includes a second switch control module electrically connected to the controller. The second switch control module includes a plurality of second switch control units. One end of each second switch control module is electrically connected to the regulation module 40 . The other end of the second switch control module is electrically connected to the radiation unit 20 . The second switch control module is configured to control the adjustment module 40 to conduct with any at least two of the radiation units 20 under the action of the controller. The function and structure of the second switch control module are substantially the same as those of the first switch module P in the first embodiment, so the specific structure of the second switch control module can refer to the description in the first embodiment The specific structure of the first switch module P.

The embodiment of the present application proposes an antenna assembly 100, which is provided with a plurality of radiation units 20, and is equipped with switches, phase shifters, and power dividers. phase usage. By switching the radiating unit 20 to realize UWB all-round precise angle measurement, by controlling the phase of the antenna, various beams can be generated, which increases the coverage angle domain, and realizes directional coverage or quasi-isotropic coverage, and utilizes quasi-isotropic Coverage can achieve relatively uniform ranging in all directions of UWB.

The radiation unit 20 provided in this application can not only realize distance measurement but also angle measurement, realize the multiplexing of the radiation unit 20, and enable the radiation unit 20 to use angle measurement and distance measurement through switching without separate settings The angle-measuring antenna and the distance-measuring antenna reduce the number of radiating units 20, reduce the number of structures and the occupied area, reduce the overall volume of the antenna assembly 100, and promote the miniaturization of the electronic device 1000, The application of phase control can flexibly generate various beams, increase the coverage angle domain, and realize multi-directional coverage or isotropic radiation; by setting multiple radiating units 20 to rotate and feed in sequence with equal amplitudes, omni-directional distance measurement can be realized. Omni-directional ranging is achieved by switching antenna groups.

The above are some implementations of the present application. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principles of the present application. These improvements and modifications are also regarded as For the scope of protection of this application.

Claims

An antenna assembly comprising:

reference floor;

a plurality of radiating elements arranged around the perimeter of the reference floor;

A radio frequency chip module is arranged opposite to the surface of the reference floor; and

An adjustment module, the adjustment module is electrically connected between at least two of the radiation units and the radio frequency chip module, and the adjustment module is used to adjust the phase and/or power of the electrically connected radiation units.
The antenna assembly according to claim 1, the antenna assembly further comprising a controller and a first switch module, the controller is electrically connected to the first switch module, and the first switch module is used for the controller Select any at least two of the radiation units to conduct with the adjustment module under the action of the controller, and the controller is electrically connected to the adjustment module, and is used to control the adjustment module to adjust the phase and phase of the electrically connected radiation units. / or power.
The antenna assembly according to claim 2, the adjustment module includes a power adjustment module and a plurality of phase adjustment modules, the power adjustment module has a power input end and a plurality of power output ends, and the power input end is used for electrical connection In the radio frequency chip module, each of the power output terminals is used to electrically connect one end of one of the phase adjustment modules, and the power adjustment module is used to adjust the power amplitude of the electrically connected radiation units to be the same; the The other end of the phase adjustment module is used to electrically connect one of the radiation units, and the phase adjustment module is used to adjust the phase of the electrically connected radiation units to be the same, increase or decrease.
The antenna assembly according to claim 3, wherein the first switch module includes a plurality of first switch units, one end of the first switch unit is electrically connected to the power output end, and the other end of the first switch unit is electrically connected to the power output end. Connect the phase adjustment module.
The antenna assembly according to claim 3, wherein the first switch module includes a plurality of first switch units, one end of the first switch unit is electrically connected to the phase adjustment module, and the other end of the first switch unit is electrically connected Connect the radiating unit.
The antenna assembly according to claim 2, the adjustment module includes a power division module, the power division module is electrically connected to the radio frequency chip module and a plurality of the radiation units, and the power division module is used to select Any at least two of the radiating units are connected to the radio frequency chip module, and are used to regulate the power of the radiating units that are electrically connected.
The antenna assembly according to claim 2, the antenna assembly further includes a connection module and a second switch module, the connection module includes a plurality of electrical connection wires, each of the electrical connection wires is used to electrically connect one of the radiation unit; the connection end of the second switch module is electrically connected to the radio frequency chip module, the second switch module is electrically connected to the controller, and the selection end of the second switch module is under the action of the controller Select any one of the input end of the adjustment module and the plurality of electrical connection lines to be turned on.
The antenna assembly according to claim 7, said antenna assembly further comprising a third switch module, said third switch module comprising a plurality of third switch units, said third switch units being electrically connected to said controller; each The connection terminal of the third switch unit is electrically connected to one of the radiation units, and the selection terminal of the third switch unit is used for selectively electrically connecting the electrical connection line or the adjustment module under the action of the controller.
The antenna assembly according to claim 7, the controller is used to control the radiation unit to switch between the first working mode, the second working mode, the third working mode and the fourth working mode, wherein, The first working mode includes a mode in which any one of the multiple radiating units works; the second working mode includes adjacent two of the multiple radiating units with the same phase and the same amplitude. value working mode; the third working mode includes a plurality of the radiating units all working with the same phase and the same amplitude; the fourth working mode includes a plurality of the radiating units to increase or Decreasing phase, same amplitude mode of operation.
The antenna assembly according to any one of claims 1 to 9, wherein the reference floor has a plurality of corners, the corners include corner cut sides, and at least one of the radiation elements is arranged corresponding to the cut corner sides.
The antenna assembly according to claim 10, wherein the radiating unit comprises a first radiating arm and a second radiating arm, and the orthographic projections of the first radiating arm and the second radiating arm on the plane where the reference floor is located intersect , and the angle between the orthographic projection of the first radiating arm on the surface of the reference floor and the orthographic projection of the second radiating arm on the surface of the reference floor faces the chamfered side.
The antenna assembly according to claim 11, the first radiating arm and the second radiating arm are arranged at intervals in the thickness direction of the reference floor;

The antenna assembly also includes a feeder, the feeder is opposite to the surface of the reference floor and is used to electrically connect the radio frequency chip module;

The radiating unit also includes a first feeder and a second feeder arranged in parallel, one end of the first feeder is electrically connected to one end of the first radiating arm that is relatively close to the second radiating arm, and the other end of the first feeder Electrically connected to the feeder, one end of the second feeder is electrically connected to an end of the second radiating arm that is relatively close to the first radiating arm, and the other end of the second feeder is electrically connected to the reference floor Chamfered edges.
The antenna assembly according to claim 11, the radiating unit further comprises a third radiating arm and a fourth radiating arm, the third radiating arm and the fourth radiating arm are respectively connected to opposite sides of the first feeder line .
The antenna assembly according to claim 13, wherein the third radiating arm and the fourth radiating arm are collinear and parallel to the chamfered side.
The antenna assembly according to claim 13, the radiating unit is used to support at least two resonance modes, and the frequency bands covered by the at least two resonance modes include the working frequency band of the UWB antenna.
The antenna assembly according to claim 10, the reference floor has a first chamfered side, a second chamfered side, a third chamfered side and a fourth chamfered side; a plurality of the radiating elements comprising a first radiating element , a second radiating unit, a third radiating unit and a fourth radiating unit, the first radiating unit, the second radiating unit, the third radiating unit and the fourth radiating unit are respectively arranged in the first the corner-cutting edge, the second corner-cutting edge, the third corner-cutting edge and the fourth corner-cutting edge.
An antenna assembly comprising:

reference floor;

a plurality of radiating elements arranged around the perimeter of the reference floor;

The radio frequency chip module is arranged opposite to the board surface of the reference floor;

an adjustment module, arranged opposite to the surface of the reference floor, the adjustment module is used to adjust the phase and/or power of the radiation unit,

The first switch control module is arranged opposite to the surface of the reference floor; and

a controller, the controller is electrically connected to the first switch control module, and the controller is used to control the first switch control module to communicate with the adjustment module and the radio frequency chip module or communicate with at least one of the radiation units and the RF chip module.
The antenna assembly according to claim 17, the connection end of the first switch control module is electrically connected to the radio frequency chip module, and the selection end of the first switch control module is adjusted in the adjustment under the action of the controller Any one selected from the module and the plurality of radiation units is connected;

The antenna assembly also includes a second switch control module electrically connected to the controller, the second switch control module includes a plurality of second switch control units, one end of each second switch control module is electrically connected to the The adjustment module, the other end of the second switch control module is electrically connected to the radiation unit, and the second switch control module is used to control the adjustment module and any at least two of the The radiation unit is turned on.
An electronic device, comprising the antenna assembly according to any one of claims 1-18.
A communication system, comprising a communication device and the electronic device according to claim 19, the communication device establishing a wireless communication connection with the electronic device.