CN218448435U

CN218448435U - Antenna assembly and electronic equipment

Info

Publication number: CN218448435U
Application number: CN202222524910.2U
Authority: CN
Inventors: 戴海军; 黎朋; 刘奕彬
Original assignee: Dongguan Demen Electronics Co ltd
Current assignee: Shenzhen Haidemen Electronics Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-02-03
Anticipated expiration: 2032-09-22

Abstract

The embodiment of the application provides an antenna module and electronic equipment, the antenna module includes ground connection and radiation plane, first antenna and second antenna are connected ground connection and radiation plane and are in order to carry out ground connection and feed, first antenna includes first return circuit, second return circuit and first antenna switch, first antenna switch is used for switching the on state of first return circuit and second return circuit and adjusts the working frequency channel of first return circuit and second return circuit, the second antenna includes third return circuit, intermediate frequency branch, high frequency branch and second antenna switch, the second antenna switch is used for controlling the on state of third return circuit and adjusting the working frequency channel of third return circuit. The antenna assembly provided by the embodiment of the application improves the antenna radiation performance of the equipment through a multi-loop design.

Description

Antenna assembly and electronic equipment

Technical Field

The present application relates to the field of electronic devices, and in particular, to an antenna assembly and an electronic device.

Background

With the development of communication technology, electronic devices such as smart phones or tablet computers have more and more functions, and communication modes of the electronic devices are more diversified. For example, a typical electronic device may support multiple communication modes such as cellular network communication, wireless Fidelity (Wi-Fi) communication, global Positioning System (GPS) communication, and Bluetooth (BT) communication.

With the development of electronic technology, electronic devices are becoming smaller and lighter, and the internal space of electronic devices is also becoming smaller and smaller. In the prior art, if more antennas or more frequency bands are to be covered, more complicated circuit structures need to be arranged on communication equipment to realize more antenna coverage, which also results in more complicated and compact layout of the whole antenna and influences the radiation performance of the antenna.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an antenna module and an electronic device, which can improve the radiation performance of an antenna.

An embodiment of the present application provides an antenna assembly, includes:

a ground and radiation plane;

the first antenna is connected with the grounding and radiating plane to perform grounding and feeding, and comprises a first loop, a second loop and a first antenna switch, wherein the first antenna switch is used for switching the connection state of the first loop and the second loop and adjusting the working frequency bands of the first loop and the second loop;

the second antenna is connected with the grounding and radiating plane to be grounded and fed, and comprises a third loop, an intermediate frequency branch, a high frequency branch and a second antenna switch, wherein the second antenna switch is used for controlling the connection state of the third loop and adjusting the working frequency band of the third loop.

In an embodiment, the first antenna further includes an intermediate frequency branch and an ultra high frequency branch.

In one embodiment, the antenna assembly of claim 2, wherein the if branch of the first antenna is configured to transceive radio frequency signals in 2400-2700Mhz band, the uhf branch is configured to transceive radio frequency signals in 5150-5180Mhz band, the first loop is configured to transceive radio frequency signals in 3300-3800Mhz band, and the second loop is configured to transceive radio frequency signals in 5150-5850Mhz band.

In an embodiment, the first antenna receives and transmits radio frequency signals in a Sub 6G frequency band, a WIFI 2.4GHz frequency band, and a WIFI 5GHz frequency band by controlling a state of the first antenna switch.

In an embodiment, the intermediate frequency branch of the second antenna is configured to transceive a radio frequency signal in a 1700-2700Mhz frequency band, and both the high frequency branch and the third loop are configured to transceive a radio frequency signal in a 3300-4200Mhz frequency band.

In an embodiment, the first antenna further includes an isolation branch, and the isolation branch is disposed between the high-frequency branch of the second antenna and the third loop, and is configured to reduce co-channel interference between the high-frequency branch of the second antenna and the third loop.

In an embodiment, the first antenna and the second antenna each comprise a feeding point and a grounding point.

In one embodiment, the first antenna and the second antenna are spaced apart by 0.7mm.

An embodiment of the present application further provides an electronic device, where the electronic device includes a housing and an antenna assembly, where the antenna assembly is located inside the housing, and the antenna assembly includes:

a ground and radiation plane;

and the second antenna is connected with the ground and the radiation plane to be grounded and fed, and comprises a third loop, an intermediate frequency branch, a high frequency branch and a second antenna switch, wherein the second antenna switch is used for controlling the on state of the third loop and adjusting the working frequency band of the third loop.

In an embodiment, the electronic device further comprises at least one camera located inside the housing and spaced 1.26mm from the antenna assembly.

The antenna module and electronic equipment that this application embodiment provided, antenna module include ground connection and radiation plane, first antenna and second antenna connection ground connection and radiation plane are in order to carry out ground connection and feed, and first antenna includes first return circuit, second return circuit and first antenna switch, and first antenna switch is used for switching the on state of first return circuit and second return circuit and adjusts the working frequency channel of first return circuit and second return circuit, and the second antenna includes third return circuit, intermediate frequency branch, high frequency branch and second antenna switch, and second antenna switch is used for controlling the on state of third return circuit and adjusts the working frequency channel of third return circuit. The antenna assembly provided by the embodiment of the application improves the antenna radiation performance of the equipment through a multi-loop design.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an antenna assembly provided in an embodiment of the present application.

Fig. 3 is a diagram of an area of an inner wall of an antenna applied in an electronic device according to an embodiment of the present application.

Fig. 4 is a diagram of an area where an antenna is attached to an outer wall in an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The embodiment of the application provides an antenna assembly and electronic equipment. The details will be described below separately. The antenna assembly can be arranged in the electronic device, and the electronic device can be a smart phone, a tablet computer and the like.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present disclosure.

The electronic device 100 includes a display 101, a housing 102, a circuit board 103, and a battery 104.

The display screen 101 is disposed on the housing 102 to form a display surface of the electronic device 100, and is used for displaying information such as images and texts. The Display screen 101 may include a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display screen.

A cover plate may also be mounted on the display screen 101 to cover the display screen 101. The cover plate can be a transparent glass cover plate, so that the display screen light-transmitting cover plate can display. In some embodiments, the cover plate may be a glass cover plate made of a material such as sapphire.

The display screen 101 may include a display area and a non-display area. The display area may be used to display a screen of the electronic device 100 or provide a user with touch control. The top area of the non-display area is provided with an opening for conducting sound and light, and the bottom of the non-display area can be provided with functional components such as a fingerprint module, a touch key and the like.

Note that the structure of the display panel 101 is not limited to this. For example, the display screen 101 may be a full-screen or a shaped screen. It should be further noted that, in some embodiments, the display screen 101 may not include the non-display area, but is configured in a full-screen structure, and the functional components such as the distance sensor and the ambient light sensor may be disposed below the display screen or at other positions. Wherein, the apron is fit for the size setting of display screen.

The housing 102 is used to form an outer contour of the electronic apparatus 100 so as to accommodate electronic devices, functional components, and the like of the electronic apparatus 100, while providing sealing and protecting functions for the electronic devices and functional components inside the electronic apparatus. For example, the camera, the circuit board, and the vibration motor of the electronic device 100 may be disposed inside the housing 102.

The case 102 may include a middle frame and a rear cover combined with each other to form the case 102, and the middle frame and the rear cover may form a receiving space to receive the circuit board 103, the display screen 101, the battery 104, and the like. Further, a cover plate may be fixed to the case 102, the cover plate and the case 102 forming a closed space to accommodate the circuit board 103, the display screen 101, the battery 104, and the like. In some embodiments, a cover plate is attached to the center frame, a rear cover is attached to the center frame, the cover plate and the rear cover are located on opposite sides of the center frame, and the cover plate and the rear cover are located opposite each other.

In some embodiments, the housing 102 may be a metal housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that the material of the housing 102 in the embodiment of the present application is not limited to this, and other manners may also be adopted, such as: the housing 102 may be a plastic housing. Also for example: the housing 102 is a ceramic housing. For another example: the housing 102 may include a plastic part and a metal part, and the housing 102 may be a housing structure in which metal and plastic are matched with each other, specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure.

A circuit board 103 is disposed inside the housing 102. The circuit board 103 may be a main board of the electronic device 100. One or more of functional components such as a processor, a camera, an earphone interface, an acceleration sensor, a gyroscope, and a motor may also be integrated on the circuit board 103. Meanwhile, the display screen 101 may be electrically connected to the circuit board 103 to control display of the display screen 101 by a processor on the circuit board 103.

In some embodiments, the circuit board 103 may be secured within the housing 102. Specifically, the circuit board 103 may be screwed to the middle frame by screws, or may be snap-fitted to the middle frame by a snap-fit manner. It should be noted that, the way of specifically fixing the circuit board 103 to the middle frame according to the embodiment of the present application is not limited to this, and other ways, such as a way of jointly fixing by a snap and a screw, may also be used.

The battery 104 is disposed inside the housing 102. Meanwhile, the battery 104 is electrically connected to the circuit board 103 to enable the battery 104 to supply power to the electronic device 100. Wherein, the circuit board 103 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 104 to the various electronic devices in the electronic apparatus 100.

Wherein, an antenna component is also arranged in the electronic device 100. The antenna assembly is used to implement a wireless Communication function of the electronic device 100, for example, the antenna assembly may be used to implement a Near Field Communication (NFC) function, a WIFI function, a radio frequency Communication function, or the like. The antenna assembly 200 is disposed inside the housing 20 of the electronic device 100. It is understood that some components of the antenna assembly 200 may be integrated on the circuit board 103 inside the housing 102, for example, the signal processing chip and the signal processing circuit in the antenna assembly 200 may be integrated on the circuit board 103. In addition, some components of the antenna assembly 200 may also be disposed directly inside the housing 102. For example, the antenna of the antenna assembly 200 may be disposed directly inside the housing 102.

Among the prior art, with the rapid development of wireless communication technology, a fifth generation (5G) wireless communication system will be fully commercialized in 2020. The 5G wireless communication system will use the following two different main frequency bands: millimeter wave bands below 6GHz and above 6 GHz. The 5G antenna system below 6GHz is preferably used because of the advantages of strong operability and mature technology below 6 GHz. With the increasing number of electronic devices, especially mobile phone antennas, and the increasingly narrow space, the requirements for the performance, bandwidth, isolation and the like of the antennas are increasing, the conventional antenna form has the disadvantages of poor isolation, low performance, incapability of meeting the requirements for bandwidth and the like, a new thought is required to be adopted to develop the bandwidth, and Sub 6G antennas with high isolation are increasingly urgent.

The antenna scheme design that this patent provided provides a multiloop antenna for Sub 6G, has advantages such as miniaturization, broadband, low-cost, but wide application and various actual scenes.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application. The antenna assembly 200 may include a ground and radiating plane 14, a first antenna, and a second antenna. The radiators of the first antenna and the second antenna are all connected with the ground and the radiating plane for grounding and feeding, the first antenna comprises a first loop 2, a second loop 5 and a first antenna switch 3, and the first antenna switch 3 is used for switching the switching-on state of the first loop 2 and the second loop 5 and adjusting the working frequency bands of the first loop 2 and the second loop 5. The second antenna comprises a third loop 11, an intermediate frequency branch 10, a high frequency branch 13 and a second antenna switch 9, wherein the second antenna switch 9 is used for controlling the on state of the third loop 11 and adjusting the working frequency band of the third loop 11.

In one embodiment, the if branch 1 may surround the first loop 2 of the first antenna, and the first loop 2 and the second loop 5 of the first antenna may extend in two directions, for example, the first loop 2 extends in the direction of the if branch 1, and the second loop 5 extends in the opposite direction of the if branch 1. In addition, the if branch 10 and the hf branch 13 of the second antenna may be two different extensions above the second antenna. For example, if hf branch 13 extends in the same direction as if branch 1, if branch 10 may extend in the opposite direction as if branch 1.

The first antenna switch 3 may be used as a grounding point of the first antenna to be grounded to the ground plane 14. Furthermore, a separate grounding point may be provided, such as a separate grounding point 7 on the second antenna for grounding to the ground plane 14. The first antenna is fed through feed point 4 and the second antenna is fed through feed point 8.

The radiators of the first antenna and the radiators of the second antenna may be connected to the ground plane 14 through connectors, and the number of the connectors may be one or two, for example, the radiator of the first antenna 22 includes a ground point and a feeding point, the ground point is used for connecting to the ground plane 14, and the feeding point is used for connecting to a signal source. The radiator of the second antenna may comprise two grounding points for connecting to the grounding plane 14 and one feeding point for connecting to the signal source, wherein the two grounding points may be respectively disposed at both sides of the feeding point, such as two grounding points 7 and 9 of the second antenna in fig. 2 disposed at both sides of the feeding point 8 and respectively connected to two connectors for grounding.

In an embodiment, the grounding point arranged on the radiator can be fixedly connected to the whole machine reference ground in a welding mode, and the grounding points can also be fixedly connected to the whole machine reference ground in a screw bolt locking mode. In other embodiments, the plurality of grounding points may be further connected to the whole machine reference ground through a connection line, which is not further limited in this application.

Specifically, the connecting element for connecting the ground plane 14 may be a connecting wire, one end of which is electrically connected to the ground point of the radiator of the first antenna or the radiator of the second antenna, and the other end of which is electrically connected to the ground plane 14. In other embodiments, the connecting member may be a thin sheet metal. For example, a magnesium alloy sheet, an aluminum alloy sheet, or the like.

In an embodiment, the first antenna may further include an if branch 1 and an uhf branch 6. The intermediate frequency branch 1 of the first antenna may be configured to receive and transmit radio frequency signals in 2400-2700Mhz frequency band, the ultra-high frequency branch 6 may be configured to receive and transmit radio frequency signals in 5150-5180Mhz frequency band, the first loop 2 may be configured to receive and transmit radio frequency signals in 3300-3800Mhz frequency band, and the second loop 5 may be configured to receive and transmit radio frequency signals in 5150-5850Mhz frequency band. Therefore, the first antenna can receive and transmit radio frequency signals of a Sub 6G frequency band, a WIFI 2.4GHz frequency band and a WIFI 5GHz frequency band by controlling the state of the first antenna switch 3.

In an embodiment, the Sub 6G band may include N1/N3/N5/N8/N28/N77/N78/N79, and the like, which is not further limited in this embodiment.

In an embodiment, the intermediate frequency branch 10 of the second antenna may be configured to transceive the radio frequency signals in the 1700-2700Mhz band, and the high frequency branch 13 and the third loop 11 may be configured to transceive the radio frequency signals in the 3300-4200Mhz band. The first antenna further comprises an isolation branch 12, and the isolation branch 12 may be disposed between the high-frequency branch 13 of the second antenna and the third loop 11, for reducing co-channel interference of the high-frequency branch 13 of the second antenna and the third loop 11.

In one embodiment, the first antenna and the second antenna are spaced apart by 0.7mm. The high isolation of the two antennas is realized through the low distance, and the radio frequency performance requirement is met. Meanwhile, the frequency band is switched by an intelligent switch on the basis of the multi-loop antenna technology so as to cover the required frequency band bandwidth. The utility model discloses well antenna frequency channel covers 2400-2700Mhz, 3300-4200Mhz, 5150-5850Mhz frequency channel, and adjacent antenna frequency channel covers 1710-2700Mhz, 3300-4200Mhz frequency channel, because same frequency interference leads to the isolation poor, consequently increases the inductive reactance of its antenna through two return circuits technique and reaches the high isolation requirement.

In an embodiment, the ground plane 14 may be an FPC (Flexible Printed Circuit), and the first antenna and the second antenna are FPC antennas. In other embodiments, the first antenna and the second antenna may also be LDS (Laser-Direct-structuring) antennas or PDS (PrinTIng Direct structuring) antennas, which is not limited in this embodiment.

The Antenna type of the multiple antennas may be any one of a LOOP (LOOP) Antenna, an Inverted F Antenna (IFA), a SLOT (SLOT) Antenna, and the like, which is not further limited in this application.

The embodiment of the present invention further provides an electronic device, please continue to refer to fig. 3 and fig. 4, fig. 3 is an inner wall area diagram of antenna application in the electronic device provided by the embodiment of the present application, and fig. 4 is an outer wall area diagram of antenna application in the electronic device provided by the embodiment of the present application. The electronic device 300 includes a housing and an antenna assembly located inside the housing, the antenna assembly including:

a ground plane;

a first antenna connected to a ground plane to be grounded, the first antenna including a first loop, a second loop, and a first antenna switch for switching on states of the first loop and the second loop;

and the second antenna is connected with the ground plane so as to be grounded and comprises a third loop, an intermediate frequency branch, a high frequency branch and a second antenna switch, and the second antenna switch is used for controlling the connection state of the third loop.

In an embodiment, a slot may be further disposed between the radiators of the first antenna and the second antenna. The gap may be filled with air or a non-conductive material, such as plastic. The gap between the two radiators is equivalent to a coupling capacitor, and the size of the coupling capacitor is mainly related to the end surface area of the radiators on two sides, the width of the gap and the medium filled in the gap. The gaps are filled with non-conductive materials, so that the structural strength of the antenna structure can be improved, and the antenna structure can be more attractive.

In an embodiment, the electronic device may further include at least one camera located inside the housing and spaced 1.26mm from the antenna assembly.

In this embodiment, the electronic Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.

The antenna assembly comprises a grounding plane, a radiating plane, a first antenna and a second antenna, wherein the first antenna and the second antenna are connected with the grounding plane and the radiating plane for grounding and feeding, the first antenna comprises a first loop, a second loop and a first antenna switch, the first antenna switch is used for switching the connection state of the first loop and the second loop and adjusting the working frequency range of the first loop and the second loop, the second antenna comprises a third loop, an intermediate frequency branch, a high frequency branch and a second antenna switch, and the second antenna switch is used for controlling the connection state of the third loop and adjusting the working frequency range of the third loop. The antenna assembly provided by the embodiment of the application improves the antenna radiation performance of the equipment through a multi-loop design.

The antenna assembly and the electronic device provided in the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are described herein with reference to specific examples, which are provided only to help understanding of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An antenna assembly, comprising:

a ground and radiation plane;

2. The antenna assembly of claim 1, wherein the first antenna further comprises an intermediate frequency branch and an ultra high frequency branch.

3. The antenna assembly of claim 2, wherein the intermediate frequency branch of the first antenna is configured to transceive radio frequency signals in 2400-2700Mhz frequency band, the uhf branch is configured to transceive radio frequency signals in 5150-5180Mhz frequency band, the first loop is configured to transceive radio frequency signals in 3300-3800Mhz frequency band, and the second loop is configured to transceive radio frequency signals in 5150-5850Mhz frequency band.

4. The antenna assembly of claim 3, wherein the first antenna is configured to transceive radio frequency signals in a Sub 6G band, a WIFI 2.4GHz band, and a WIFI 5GHz band by controlling a state of the first antenna switch.

5. The antenna assembly of claim 1, wherein the intermediate frequency branch of the second antenna is configured to transceive radio frequency signals in 1700-2700Mhz band, and wherein the high frequency branch and the third loop are configured to transceive radio frequency signals in 3300-4200Mhz band.

6. The antenna assembly of claim 5, wherein the first antenna further comprises an isolation branch, and the isolation branch is disposed between the high-frequency branch of the second antenna and the third loop, so as to reduce co-channel interference between the high-frequency branch of the second antenna and the third loop.

7. The antenna assembly of claim 1, wherein the first and second antennas each comprise a feed point and a ground point.

8. The antenna assembly of claim 1, wherein the first and second antennas are spaced 0.7mm apart.

9. An electronic device comprising a housing and an antenna assembly, the antenna assembly located inside the housing, the antenna assembly comprising:

a ground and radiation plane;

10. The electronic device of claim 9, further comprising at least one camera positioned inside the housing and spaced 1.26mm from the antenna assembly.