CN112952344A

CN112952344A - Electronic device

Info

Publication number: CN112952344A
Application number: CN202110113512.9A
Authority: CN
Inventors: 杨江燕
Original assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Current assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-06-11
Anticipated expiration: 2041-01-27
Also published as: CN112952344B

Abstract

An embodiment of the present application provides an electronic device, including: the first radiator is provided with a through hole; a gap is formed between each second radiator and the first radiator, and each second radiator is electromagnetically coupled with the first radiator through one gap to transmit radio frequency signals; fingerprint identification module, fingerprint identification module set up in the through-hole to realize that the electric isolation between fingerprint identification module and first irradiator and the second irradiator. In the electronic device provided by the embodiment of the application, the first radiating body and the plurality of second radiating bodies radiate radio-frequency signals together, the first radiating body is provided with the through hole, and the fingerprint identification module is arranged in the through hole, so that the occupation of the fingerprint identification module on the layout space of the electronic device can be reduced, and the electronic device is light and thin.

Description

Electronic device

Technical Field

The application relates to the technical field of electronics, in particular to electronic equipment.

Background

With the development of electronic technology, electronic devices such as smart phones have more and more functions and more electronic components in the electronic devices. The increased number of electronic components results in increased occupied space, which is not conducive to the realization of slimness and thinness of electronic devices.

Disclosure of Invention

The application provides an electronic equipment can radiate radio frequency signal jointly through first irradiator and second irradiator to through setting up the fingerprint identification module in the through-hole of first irradiator, can reduce the occupation of fingerprint identification module to electronic equipment's overall arrangement space, be favorable to realizing electronic equipment's frivolousization.

An embodiment of the present application provides an electronic device, including:

the first radiator is provided with a through hole;

a plurality of second radiators, wherein a gap is formed between each of the second radiators and the first radiator, and each of the second radiators is electromagnetically coupled with the first radiator through one of the gaps to transmit a radio frequency signal;

the fingerprint identification module, the fingerprint identification module sets up in the through-hole, in order to realize the fingerprint identification module with first irradiator with electrical isolation between the second irradiator.

In the electronic equipment that this application embodiment provided, this electronic equipment includes first irradiator, a plurality of second irradiator and fingerprint identification module, and first irradiator radiates radio frequency signal with a plurality of second irradiators jointly to be provided with the through-hole on the first irradiator, the fingerprint identification module sets up in the through-hole, can reduce the occupation of fingerprint identification module to electronic equipment's layout space, is favorable to realizing electronic equipment's frivolousization.

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.

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

Fig. 2 is a second schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 3 is a schematic view of a first radiator structure of an electronic device according to an embodiment of the present disclosure.

Fig. 4 is a third schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 5 is a fourth schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a first top-view structure of an electronic device according to an embodiment of the present application.

Fig. 7 is a second schematic top view structure diagram of an electronic device according to an embodiment of the present application.

Fig. 8 is a fifth structural schematic diagram of an electronic device according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a circuit board, a first metal dome, and a second metal dome of an electronic device according to an embodiment of the present disclosure.

Fig. 10 is a S-parameter graph of 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.

The embodiment of the application provides an electronic device 100. The electronic device 100 may be a smart phone, a tablet computer, a notebook computer, or other devices capable of transmitting radio frequency signals.

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

The electronic device 100 includes a housing 50, a circuit board 40, a battery 30, an antenna module 20, and a fingerprint identification module 10.

The housing 50 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, and to seal and protect the electronic devices and functional components inside the electronic apparatus 100.

Wherein the circuit board 40 is mounted inside the case 50. The circuit board 40 may serve as a main board of the electronic device 100. The circuit board 40 is provided with a ground point to ground the circuit board 40. One, two or more of the functional components such as a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera, a distance sensor, an ambient light sensor, a gyroscope, and a processor may be integrated on the circuit board 40.

Wherein the battery 30 is mounted inside the case 50. The battery 30 is connected to the circuit board 40 to supply power to the electronic device 100 from the battery 30. Among them, the circuit board 40 may be provided thereon with a power management circuit for distributing the voltage supplied from the battery 30 to the respective electronic devices in the electronic apparatus 100.

The electronic device 100 is further provided with an antenna module 20. The antenna module 20 is used to implement a radio frequency communication function of the electronic device 100, for example, the antenna module 20 may be used to implement transmission of radio frequency signals. The antenna module 20 is disposed inside the housing 50 of the electronic device 100. It is understood that some components of the antenna module 20 may be integrated on the circuit board 40 inside the housing 50, for example, the signal processing chip and the signal processing circuit in the antenna module 20 may be integrated on the circuit board 40. In addition, some components of the antenna module 20 may also be disposed directly inside the housing 50. For example, a radiator or a conductor structure of the antenna module 20 for radiating signals may be directly disposed inside the housing 50.

Wherein, still be provided with fingerprint identification module 10 in the electronic equipment 100, fingerprint identification module 10 coexists with antenna module 20. The fingerprint identification module 10 can be set up at the back of electronic equipment 100, for example set up through-hole 60 on casing 50, some of fingerprint identification module 10 exposes outside through this through-hole 60, and the user can carry out fingerprint identification through this fingerprint identification module 10. Fingerprint identification module 10 also can include in the display screen is integrated, and when the user pressed the region that the display screen corresponds fingerprint identification module 10 with the finger, fingerprint identification can be accomplished. In addition, in this application embodiment, do not do the restriction to the specific type of fingerprint identification module 10, this fingerprint identification module 10 can be optics fingerprint identification module, also can be ultrasonic fingerprint identification module, can also be virtual fingerprint identification module, etc.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a second electronic device according to an embodiment of the present disclosure.

The electronic device 100 includes an antenna module 20 and a fingerprint identification module 10, where the antenna module 20 includes a first radiator 21 and a plurality of second radiators 22.

Wherein the first radiator 21 is grounded. The material of the first radiator 21 is a metal material, such as a magnesium alloy or an aluminum alloy. The first radiator 21 is provided with a through hole 60, wherein the shape of the through hole 60 may be any shape suitable for industrial design, such as a circle, a square, or an ellipse. The through hole 60 is arranged in the center of the first radiator 21, and the arrangement in the center ensures that the effect of the through hole 60 on the first radiator 21 is balanced.

Since there are dense metal conductive elements on the circuit board 40, the first radiator 21 should be spaced apart from the conductive elements in order to avoid the metal shielding phenomenon. The common approach is to provide the radiator with a clearance area to achieve stability of the radiator in transmitting the rf signal. In the embodiment, the first radiator 21 is disposed parallel to the circuit board 40, and the distance between the first radiator 21 and the circuit board 40 is less than or equal to 5 mm, and it is not necessary to specially provide a clearance area for the first radiator 21. The distance between the first radiator 21 and the circuit board 40 is limited, so that the performance of the antenna module 20 is not affected by other conductive elements, and the electronic device 100 is light and thin.

The material of the second radiator 22 is a metal material, such as a magnesium alloy or an aluminum alloy. The second radiator 22 may be formed by bending a long metal strip or by welding multiple metal strips. The number of the second radiators 22 may be multiple, and the multiple second radiators 22 are symmetrically distributed on the periphery of the first radiator 21.

A gap 23 is formed between one first radiator 21 and each second radiator 22, and the width of the gap 23 may be sufficient to achieve electromagnetic coupling between the first radiator 21 and the second radiator 22 to transmit radio frequency signals, for example, the width of the gap 23 is 0.5 mm, 1 mm, or 1.5 mm. The plurality of second radiators 22 are symmetrically distributed along the circumference of the first radiator 21 so that the interaction between the first radiator 21 and the second radiators 22 is the same in operation.

It will be appreciated that the electromagnetic coupling is generated by mutual inductance between the first radiator 21 and the second radiator 22, such that a current change of one of the radiators is affected to the other radiator by the mutual inductance, the input and output of the radiators are closely matched and mutually affected, and the electromagnetic coupling is generated between the second radiator 22 and the first radiator 21 by the mutual interaction, thereby achieving the electrical connection.

Each second radiator 22 is configured to transmit radio frequency signals of a first frequency band, and the mode is a quarter wavelength. For example, the radio frequency signal of the first frequency band may be an N78 frequency band of a 5G (5th-Generation, fifth Generation mobile communication technology) radio frequency signal. The frequency range of the N78 frequency band is 3.4GHz to 3.6 GHz. It can be understood that, when the number of the second radiators 22 is multiple, each of the second radiators 22 can transmit the radio frequency signals of the first frequency band, so that the multiple second radiators 22 can transmit the radio frequency signals of the first frequency band, so as to enhance the strength of the radio frequency signals of the first frequency band. For example, when the number of the second radiators 22 is 4, 4 × 4MIMO (multiple-in multiple-out) transmission of the radio frequency signals of the first frequency band may be formed.

The plurality of second radiators 22 and the first radiator 21 are configured to transmit the rf signals of the second frequency band together, where the mode is five-quarter wavelength, for example, the rf signals of the second frequency band may be 5G rf signals of N79 frequency band. The frequency range of the N79 frequency band is 4.8GHz to 4.9 GHz.

The fingerprint identification module 10 is disposed in the through hole 60, so that the fingerprint identification module 10 is electrically isolated from the first radiator 21 and the second radiator 22. Because the outer surface of the fingerprint identification module 10 is made of metal, and the fingerprint identification module 10 is powered on in a working state, the powered fingerprint identification module 10 may affect the first radiator 21 or the second radiator 22, and therefore, there should be electrical isolation between the fingerprint identification module 10 and the first radiator 21 or the second radiator 22, so as to ensure stable operation of the first radiator 21 or the second radiator 22. On the contrary, the first radiator 21 or the second radiator 22 transmitting the rf signal may also affect the fingerprint identification module 10, for example, the fingerprint identification is inaccurate and the fingerprint cannot be identified.

In some embodiments, there is a first gap between the fingerprint identification module 10 and the first radiator 21, so that the fingerprint identification module 10 and the first radiator 21 are electrically isolated, and the width of the first gap may be 2 mm, 2.5 mm, or 3 mm, etc. Or, the packaging structure of the fingerprint identification module 10 is made of plastic, rubber or ceramic, and it can be understood that the fingerprint identification module 10 and the first radiation body 21 are separated by the packaging structure outside the fingerprint identification module 10, so that there is physical isolation between the fingerprint identification module 10 and the first radiation body 21, and thus electrical isolation is realized.

It is understood that the first gap between the fingerprint identification module 10 and the first radiator 21 may also be filled with an insulating material such as plastic, rubber, or ceramic, so as to achieve electrical isolation between the fingerprint identification module 10 and the first radiator 21 and the second radiator 22.

In some embodiments, the fingerprint identification module 10 and the antenna module 20 in the electronic device 100 may be disposed at the middle upper portion of the electronic device 100. In other embodiments, the fingerprint identification module 10 and the antenna module 20 in the electronic device 100 may be disposed right above the battery 30, i.e., in the middle-lower portion of the electronic device 100. Therefore, the fingerprint identification module 10 and the antenna module 20 can be disposed in the middle of the electronic device 100, and do not need to be disposed at four corners of the electronic device 100, so as to effectively save space, and solve the problem that when the electronic device is horizontally held in use, fingers cling to the corners of the electronic device 100, which affects the stability of the antenna module 20 for transmitting radio frequency signals.

In the description of the present application, it is to be understood that terms such as "first", "second", and the like are used merely to distinguish one similar element from another, and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated.

In the electronic device 100 provided in this embodiment, the electronic device 100 includes the first radiator 21, the plurality of second radiators 22 and the fingerprint identification module 10, the first radiator 21 is provided with the through hole 60, the fingerprint identification module 10 is disposed in the through hole 60, and the fingerprint identification module 10 and the first radiator 21 share a part of the space of the electronic device 100, which is beneficial to implementing the lightness and thinness of the electronic device 100. The second radiator 22 is configured to transmit a radio frequency signal of the first frequency band, and the plurality of second radiators 22 and the first radiator 21 are configured to transmit a radio frequency signal of the second frequency band together, so that the plurality of second radiators 22 can be shared, and the electronic device 100 can transmit at least two radio frequency signals, thereby reducing the number of radiators of the electronic device 100, reducing the occupation of the radiators on the layout space of the electronic device 100, and facilitating the implementation of the light and thin of the electronic device 100.

Referring to fig. 3, fig. 3 is a schematic view of a first radiator structure of an electronic device according to an embodiment of the present disclosure.

The first radiator 21 includes a plurality of radiating portions, each of which is connected to the periphery of the through hole 60, where the periphery of the through hole 60 is the edge of the hole wall of the through hole 60 formed by the first radiator 21. Each of the radiating portions includes an end portion 211, and each of the end portions 211 is electromagnetically coupled to the second radiator 22 through one of the gaps 23. It is understood that the first radiator 21 includes a plurality of end portions 211. The first radiator 21 has a symmetrical structure, and the plurality of end portions 211 are disposed at positions that are symmetrically distributed around the periphery of the first radiator 21, for example, if the first radiator 21 has a cross shape or a herringbone shape, there are 4 radiating portions in the cross-shaped first radiator 21, 1 end portion 211 in each radiating portion, and 4 end portions 211 in each radiating portion, and 3 radiating portions in the herringbone-shaped first radiator 21, 1 end portion 211 in each radiating portion, and 3 end portions 211 in each radiating portion.

When the plurality of second radiators 22 and the first radiator 21 are used to transmit the radio frequency signal of the second frequency band together, the distance between each end 211 and the fingerprint identification module 10 is equal, it can be understood that the distance between each end 211 and the first gap is equal, and the first radiator 21 contributes to the transmission of the radio frequency signal of the second frequency band in the same manner, so that the stable transmission of the radio frequency signal of the second frequency band can be realized.

In some embodiments, referring to fig. 2 and fig. 3, the first radiator 21 includes a plurality of connection points 212, where the connection points 212 may be a small area divided on the first radiator 21 or a small metal protruding on the first radiator 21.

The connection points 212 are disposed on the periphery of the through hole 60, and may be asymmetrically distributed on the periphery of the through hole 60 or symmetrically distributed on the periphery of the through hole 60. In practical use, the connection point 212 is provided for grounding the first radiator 21. The connection point 212 is connected to the ground point on the circuit board 40 through a section of conducting wire or metal column, and the potential at the periphery of the through hole 60 is 0, it can be understood that the current at the hole wall of the through hole 60 is zero, which is more beneficial to reducing the influence of the first radiator 21 and the second radiator 22 on the fingerprint identification module 10.

In practical applications, a metal strip or a metal column may be connected to each first radiator 21 and a ground point on a circuit board 40 by welding or pasting.

Meanwhile, the metal bar or the metal column has a supporting function, so that the distance between the first radiator 21 and the circuit board 40 is ensured to be less than or equal to 5 mm. It is understood that in some embodiments, instead of using the supporting function of the metal strip or the metal column, the first radiator 21 may be supported by using an insulating material such as plastic or ceramic, so as to ensure that the distance between the first radiator 21 and the circuit board 40 is less than or equal to 5 mm.

In some embodiments, with reference to fig. 2 and fig. 3, each of the second radiators 22 includes a first radiation segment 221 and a second radiation segment 222, the first radiation segment 221 is connected to the second radiation segment 222, and the first radiation segment 221 is electromagnetically coupled to the first radiator 21 through the gap 23. For example, there are 4 first radiation segments 221, there are 4 end portions 211 of the first radiator 21, and each first radiation segment 221 is electrically connected to one end portion 211 of the first radiator 21 through the gap 23.

The first radiating section 221 may be a metal strip bent or a formed metal strip. For example, the first radiating section 221 is "L" shaped, and forms an elongated gap 23 with the first radiator 21. Since the first radiation section 221 is electromagnetically coupled to the first radiator 21 through the gap 23. The longer the length of the gap 23, the stronger the ability to achieve electromagnetic coupling. It can be understood that the first radiator 21 forms the plurality of end portions 211, so that the more the first radiator 21 and the first radiation segment 221 can achieve electromagnetic coupling, the more stable current transmission is, and the more favorable the first radiator 21 and the second radiator 22 can transmit radio frequency signals.

One end of the second radiating segment 222 feeds a signal to feed the second radiator 22 and the first radiator 21. For example, the first radiation section 221, the second radiation section 222, the first radiator 21, the connection point 212 on the first radiator 21, the conductor, and the ground point on the circuit board 40 form a closed loop, and the first radiator 21 and the second radiator 22 transmit the second radio frequency signal together by feeding the signal to the second radiation section 222. For example, the first radiating section 221 and the second radiating section 222 are connected to form a single-wire antenna, so as to transmit the first radio frequency signal.

Referring to fig. 2, the first radiating section 221 is connected to the second radiating section 222 to form a predetermined angle.

When the first radiation section 221 is parallel to the circuit board 40, if the second radiation section 222 and the first radiation section 221 are not perpendicular to each other, the length of the second radiation section 222 is greater than the distance from the circuit board 40 of the first radiation section 221. According to the requirement of the transmission frequency band, the second radiation segments 222 with different lengths can be designed, and are suitable for transmitting signals of different frequency bands.

When the first radiating segment 221 is parallel to the circuit board 40 and the second radiating segment 222 is perpendicular to the first radiating segment 221, the length of the second radiating segment 222 can be considered to be equal to the distance from the first radiating segment 221 to the circuit board 40, and it can be understood that the second radiating segment 222 can be used not only as a part of the second radiator 22, but also as a supporting segment for the first radiating segment 221. Of course, in some embodiments, the second radiation section 222 may not be used as a support section for the first radiation section 221, and a support made of an insulating material such as plastic or ceramic may be used to support the first radiation section 221, so as to achieve electromagnetic coupling between the first radiation section 221 and the first radiator 21 through the gap 23.

Referring to fig. 4, fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

Each of the second radiators 22 further includes a third radiation segment 223, where the third radiation segment 223 includes a first end and a second end, the first end is connected to the first radiation segment 221, and the second end is connected to the second radiation segment 222. The material of the third radiation segment 223 may be the same metal as the first radiation segment 221 or the second radiation segment 222, or may be different metal from the first radiation segment 221 or the second radiation segment 222. The first radiating section 221, the second radiating section 222 and the third radiating section 223 may be formed by bending a long metal strip, or may be formed by welding three metal strips.

Referring to fig. 5, fig. 5 is a fourth structural schematic diagram of an electronic device according to an embodiment of the present application.

The second radiator 22 further includes a plurality of third radiation segments 223, and the plurality of third radiation segments 223 are sequentially connected to form a first end and a second end. For example, the second radiator 22 includes two third radiation segments 223, and the two third radiation segments 223 are sequentially connected to form a first end and a second end. The first end is connected to the first radiating section 221, and the second end is connected to the second radiating section 222, so as to form the second radiator 22.

Wherein an increase or decrease in the number of the third radiation segments 223 causes an increase or decrease in the length of the second radiator 22. In addition, because the third radiation section 223 is connected in a different manner, for example, in a bent manner, the volume of the second radiator 22 formed by the first radiation section 221, the second radiation section 222, and the third radiation section 223 changes, so that the shape of the whole antenna module 20 also changes.

It will be appreciated that for an antenna of the same configuration, the lower the operating frequency, the longer the wavelength, and the longer the length of the antenna required. Therefore, according to the size of the applicable resonant frequency, the length of the second radiator 22 is adjusted by adjusting the number of the third radiation segments 223, so that the second radiator 22 or the combination of the first radiator 21 and the second radiator 22 can transmit radio frequency signals of different frequency bands.

Referring to fig. 6, fig. 6 is a schematic diagram of a first top-view structure of an electronic device according to an embodiment of the present disclosure.

The antenna module 20 further includes a feed 24, and the feed 24 is used for generating radio frequency signals.

Each second radiator 22 is electrically connected to a feed 24. The first radiator 21, the second radiator 22, the circuit board 40, the feed source 24 and the ground point on the circuit board 40 form a closed loop, and the first radiator 21 and the second radiator 22 are electrically connected through electromagnetic coupling formed by the gap 23. Therefore, the feed source 24 may feed the radio frequency signal to each of the second radiators 22, each of the second radiators 22 may radiate the radio frequency signal outwards, so as to transmit the radio frequency signal of the first frequency band, and the plurality of second radiators 22 and the first radiator 21 may together radiate the radio frequency signal of the second frequency band outwards.

Referring to fig. 7, fig. 7 is a schematic diagram of a second top-view structure of an electronic device according to an embodiment of the present disclosure.

Generally, the electronic device 100 can only receive radio frequency signals within a certain frequency band, so all components in the electronic device 100 are designed according to the radio frequency signals within the certain frequency band.

However, in order for the electronic device 100 to transmit radio frequency signals of different frequency bands, the electronic device 100 further includes a plurality of tuning circuits 25, and each tuning circuit 25 is grounded. The number of tuning circuits 25 is the same as the number of second radiators 22, and each second radiator 22 is connected to one tuning circuit 25. Not only a plurality of tuning circuits 25 may be adjusted simultaneously, but also one tuning circuit 25 may be adjusted separately.

The tuning circuit 25 is composed of one or more circuit elements that provide the tuning circuit 25 with a characteristic of adjusting impedance, so that the frequency of the frequency band radiated by the electronic device 100 can be adjusted. For example, the elements of the tuning circuit 25 may be resistors, capacitors, inductors, switches, and the like. It will be appreciated that the tuning circuit 25 may also be referred to as a matching network, matching circuit, tuning network, etc.

In practical applications, the electronic device 100 may adjust the frequency of the transmission frequency band of the electronic device 100 through the tuning circuit 25, for example, the electronic device 100 has a function of a radio, and the tuning circuit 25 may adjust the frequency of an oscillator in a receiving circuit to be consistent with the frequency of the frequency band to be received, so as to generate resonance, so as to select a specific frequency band, thereby implementing a function of searching for a channel by the radio.

Referring to fig. 8, fig. 8 is a fifth structural schematic diagram of an electronic device according to an embodiment of the present application.

The antenna module 20 further includes a plurality of third radiators 26.

Wherein the number of the third radiators 26 is the same as the number of the second radiators 22. One end of each third radiator 26 is connected to one second radiator 22, and the other end of each third radiator 26 is grounded.

The third radiator 26 may be composed of one radiation segment or a plurality of radiation segments. If the third radiator 26 is composed of a plurality of radiation segments, the plurality of radiation segments are connected end to form the third radiator 26, and the third radiator 26 is connected to the second radiator 22.

It is understood that increasing or decreasing the number of the radiation segments in the third radiator 26 will increase or decrease the length of the third radiator 26, and the shape of the whole antenna module 20 will also change due to the change of the volume of the third radiator 26 caused by the different connection modes of the radiation segments, such as the bending connection.

In the antenna with the same structure, the lower the working frequency is, the longer the wavelength is, the longer the length of the required antenna is. Therefore, according to the size of the applicable resonant frequency, the length of the third radiator 26 is adjusted by adjusting the number of the radiating sections, so that the antenna module 20 can transmit radio frequency signals of different frequency bands.

Each of the second radiators 22 and the third radiator 26 are configured to transmit a radio frequency signal of a third frequency band together, for example, the radio frequency signal of the third frequency band includes an N41 frequency band, where a frequency range of the N41 frequency band is 2.5GHz to 2.69 GHz.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a circuit board, a first metal dome, and a second metal dome of an electronic device according to an embodiment of the present disclosure.

The electronic device 100 further comprises a circuit board 40, on which circuit board 40 a plurality of ground points and a plurality of feeds 24 are present. It will be appreciated that the electronic device 100 presents a ground path to ground and a feed path to the feed 24.

The circuit board 100 is provided with a ground layer, and the ground path may be formed by a metal wiring in the electronic device 100. For example, the ground path may be formed by a printed wiring on the circuit board 40 in the electronic device 100, the printed wiring connecting the ground layer. As another example, the ground path may also be formed by a metal wire in the electronic device 100.

The feed path may be formed by metal lines in the electronic device 100. For example, the feed path may be formed by a printed wiring on the circuit board 40 in the electronic device 100. For another example, the feeding path may also be formed by a metal wire in the electronic device 100.

The electronic device 100 further includes a plurality of first metal elastic pieces 27 and a plurality of second metal elastic pieces 28. The plurality of first metal elastic sheets 27 and the plurality of second metal elastic sheets 28 are all arranged on the circuit board 40, and the plurality of first metal elastic sheets 27 and the plurality of second metal elastic sheets 28 can be connected with the circuit board 40 in a welding mode or can be connected with the circuit board 40 in a sticking mode. The first metal elastic sheet 27 and the second metal elastic sheet 28 may be made of magnesium alloy or aluminum alloy.

The circuit board 40 has a plurality of grounding points and a plurality of feed sources 24, the plurality of grounding points are disposed on the grounding layer, each first metal elastic sheet 27 is electrically connected to a grounding point on the circuit board 40, each second metal elastic sheet 28 is electrically connected to a feed source 24, so that the feed source 24 feeds power to a second radiator through each second metal elastic sheet. In addition, the first metal dome 27 is connected to the first radiator 21 to realize grounding of the first radiator 21. Each second metal dome 28 is connected to one second radiator 22, so that a plurality of second radiators 22 are electrically connected to the feed source 24.

The shapes of the first metal dome 27 and the second metal dome 28 may be any shapes suitable for the connection between the first radiator 21 and the circuit board 40, such as a circle, a square, or a triangle.

The first metal elastic pieces 27 and the second metal elastic pieces 28 have conductive properties and elasticity, so that the plurality of first metal elastic pieces 27 and the plurality of second metal elastic pieces 28 can play a role in electrical connection on one hand, and have a shock-absorbing function on the other hand, and can play a role in protecting parts.

In some embodiments, there are a plurality of third radiators 26, and each third radiator 26 may also be electrically connected to a ground point on the circuit board 40.

Referring to fig. 10, fig. 10 is a S-parameter graph of the electronic device 100 according to the embodiment of the present disclosure.

When the electronic device 100 operates, two resonant frequencies may be generated, for example, one resonant frequency is in a frequency band of 3.3GHz to 3.8GHz, and the other resonant frequency is in a frequency band of 4.4GHz to 5 GHz.

An electronic device provided by the embodiment of the present application is described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding 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 electronic device, comprising:

the first radiator is provided with a through hole;

the fingerprint identification module, the fingerprint identification module sets up in the through-hole, so that the fingerprint identification module with first irradiator with electrical isolation between the second irradiator.

2. The electronic device of claim 1, wherein:

the first radiator comprises a plurality of radiating parts, each radiating part is connected with the periphery of the through hole, each radiating part comprises an end part, and each end part is electromagnetically coupled with the second radiator through one gap.

3. The electronic device of claim 2, wherein:

each the tip with the distance between the fingerprint identification module is equal.

4. The electronic device of any of claims 1-3, wherein:

the first radiator comprises a plurality of connection points, the connection points are distributed along the periphery of the through hole, and each connection point is grounded.

5. The electronic device of claim 4, further comprising:

the circuit board comprises a grounding layer, a plurality of first metal elastic sheets are arranged on the circuit board, and each first metal elastic sheet is electrically connected with the grounding layer;

each connecting point is electrically connected with one first metal elastic sheet so as to enable each connecting point to be grounded.

6. The electronic device of claim 5, wherein:

the circuit board is provided with a feed source and a plurality of second metal elastic pieces, and each second metal elastic piece is electrically connected with the feed source;

each second radiator is electrically connected with one second metal elastic sheet, so that the feed source feeds power to one second radiator through each second metal elastic sheet.

7. The electronic device of claim 6, wherein:

each second radiation body comprises a first radiation section and a second radiation section, the first radiation section is connected with the second radiation section to form a preset angle, each first radiation section is electromagnetically coupled with the first radiation body through one gap, and each second radiation section is electrically connected with the feed source.

8. The electronic device of claim 7, wherein:

each second radiator further comprises a third radiation section, and the third radiation section is respectively connected with the first radiation section and the second radiation section.

9. The electronic device of any of claims 1-3, further comprising:

and each third radiator is connected with one second radiator, and each third radiator is grounded.

10. The electronic device of any of claims 1-3, wherein:

the plurality of second radiators are symmetrically distributed along the periphery of the first radiator.