阅读说明：本技术 电子设备 (Electronic device ) 是由 雍征东 于 2020-03-19 设计创作，主要内容包括：本申请提供了一种电子设备。电子设备包括天线模组及透波结构。所述天线模组在预设方向范围内收发预设频段的电磁波信号。所述透波结构包括基板及磁性颗粒。所述基板的至少部分位于所述预设方向范围内,所述基板位于所述预设方向范围内的所述至少部分对预设频段的电磁波信号具有第一透过率。所述磁性颗粒掺杂于所述基板中的所述至少部分,以使得所述电子设备在所述磁性颗粒对应的区域内具有第二透过率,其中,所述第二透过率大于所述第一透过率。本申请提供的电子设备在天线模组收发预设频段的电磁波信号的预设方向范围内的基板中增加了透波颗粒,以形成透波结构,使得电子设备对应所述透波结构的透过率增加,提升了所述电子设备的通信性能。(The application provides an electronic device. The electronic equipment comprises an antenna module and a wave-transparent structure. The antenna module receives and transmits electromagnetic wave signals of a preset frequency band within a preset direction range. The wave-transparent structure comprises a substrate and magnetic particles. At least part of the substrate is located in the preset direction range, and the at least part of the substrate located in the preset direction range has first transmittance on electromagnetic wave signals of a preset frequency band. The magnetic particles are doped in the at least part of the substrate, so that the electronic device has a second transmittance in a region corresponding to the magnetic particles, wherein the second transmittance is greater than the first transmittance. The application provides an electronic equipment has increased wave-transparent particle in antenna module group receiving and dispatching electromagnetic wave signal's the base plate of predetermineeing the direction within range of predetermineeing of frequency channel to form the wave-transparent structure, make electronic equipment correspond the transmissivity of wave-transparent structure increases, has promoted electronic equipment's communication performance.)

1. An electronic device, characterized in that the electronic device comprises:

the antenna module is used for receiving and transmitting electromagnetic wave signals in a preset frequency band within a preset direction range;

a wave-transparent structure, the wave-transparent structure comprising:

at least part of the substrate is positioned in the preset direction range, and the at least part of the substrate positioned in the preset direction range has first transmittance on electromagnetic wave signals in a preset frequency band; and

magnetic particles doped in the at least part of the substrate to enable the electronic device to have a second transmittance in a region corresponding to the magnetic particles, wherein the second transmittance is greater than the first transmittance.

2. The electronic device of claim 1, wherein the magnetic permeability u of the substrate doped with the magnetic particles satisfies: u is more than 1 and less than or equal to 3, and the second transmittance is larger as the magnetic permeability is larger.

3. The electronic device of claim 1, wherein the doping concentration m of the magnetic particles in the substrate satisfies: m is more than or equal to 1% and less than or equal to 10%, and the larger the doping concentration is, the larger the second transmittance is.

4. The electronic device according to claim 1, wherein the magnetic particles have a particle size d satisfying: d is less than or equal to 50 um.

5. The electronic device according to any one of claims 1 to 4, wherein the electronic device includes a battery cover and a screen, the battery cover includes a back plate and a frame connected to a periphery of the back plate in a bent manner, the screen and the back plate are arranged at an interval, the battery cover and the screen cooperate to form a receiving space, the receiving space is used for receiving the antenna module, and the substrate is carried on the back plate or the frame of the battery.

6. The electronic device according to any one of claims 1 to 4, wherein the electronic device includes a battery cover and a screen, the battery cover includes a back plate and a frame connected to a periphery of the back plate in a bent manner, the screen is disposed on a side of the frame facing away from the back plate, the battery cover and the screen cooperate to form a receiving space for receiving the antenna module, the electronic device includes a battery cover, and the substrate is at least a portion of the back plate of the battery cover or at least a portion of the frame.

7. The electronic device of claim 6, wherein the magnetic particles are doped on the battery cover to form a predetermined pattern on the outer surface of the battery cover.

8. The electronic device according to any one of claims 1 to 4, wherein the electronic device includes a middle frame, a battery cover, and a screen, the middle frame includes a frame body and a metal frame, the battery cover and the screen are respectively disposed on two opposite sides of the frame body, the metal frame is connected to a periphery of the frame body in a bent manner and protrudes from two opposite surfaces of the frame body, the metal frame has a first surface and a second surface that are disposed opposite to each other, the first surface is disposed away from the frame body and forms at least a part of an appearance surface of the electronic device, the metal frame has a gap, the gap penetrates through the first surface and the second surface, and the substrate is embedded in the gap.

9. The electronic device according to claim 8, wherein the middle frame further includes an insulating portion, a part of the insulating portion is provided on the frame body, and another part of the insulating portion fills the gap, the insulating portion filling the gap constituting the substrate.

10. The electronic device of claim 8, wherein a doping concentration of magnetic particles adjacent to the first surface is less than a doping concentration of magnetic particles facing away from the first surface.

Technical Field

The present application relates to the field of communications technologies, and in particular, to an electronic device.

Background

With the development of mobile communication technology, the conventional fourth Generation (4th-Generation, 4G) mobile communication has been unable to meet the requirements of people. The fifth Generation (5th-Generation, 5G) mobile communication is preferred by users because of its high communication speed. For example, the transmission rate when data is transmitted by 5G mobile communication is hundreds of times faster than the transmission rate when data is transmitted by 4G mobile communication. However, when the millimeter wave antenna is applied to an electronic device, the millimeter wave antenna is usually disposed in an accommodating space inside the electronic device, and the transmittance of the millimeter wave signal antenna radiating through the electronic device is low, which does not meet the requirement of the antenna radiation performance. Alternatively, the transmittance of the external millimeter wave signal through the electronic device is low. Therefore, in the prior art, the communication performance of the 5G millimeter wave signal is poor.

Disclosure of Invention

The application provides an electronic device, the electronic device includes:

the antenna module is used for receiving and transmitting electromagnetic wave signals in a preset frequency band within a preset direction range;

a wave-transparent structure, the wave-transparent structure comprising:

at least part of the substrate is positioned in the preset direction range, and the at least part of the substrate positioned in the preset direction range has first transmittance on electromagnetic wave signals in a preset frequency band; and

magnetic particles doped in the at least part of the substrate to enable the electronic device to have a second transmittance in a region corresponding to the magnetic particles, wherein the second transmittance is greater than the first transmittance.

The application provides an electronic equipment has increased wave-transparent particle in antenna module group receiving and dispatching electromagnetic wave signal's the base plate of predetermineeing the direction within range of predetermineeing of frequency channel to form the wave-transparent structure, make electronic equipment correspond the transmissivity of wave-transparent structure increases, thereby has promoted electronic equipment's communication performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

FIG. 2 is a cross-sectional view taken along line I-I of FIG. 1 in accordance with one embodiment.

Fig. 3 is a schematic diagram of an antenna module receiving and transmitting an electromagnetic wave signal in a predetermined frequency band.

Fig. 4 is a schematic diagram of a structural model of the millimeter wave antenna.

Fig. 5 is a schematic circuit model diagram of the millimeter wave antenna.

FIG. 6 is a schematic cross-sectional view taken along line I-I of FIG. 1 in accordance with another embodiment.

Fig. 7 is a circuit block diagram of an electronic device according to an embodiment of the present application.

FIG. 8 is a schematic cross-sectional view taken along line I-I of FIG. 1 in accordance with another embodiment.

Fig. 9 is a schematic rear view of an electronic device according to an embodiment.

Fig. 10 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

FIG. 11 is a sectional view taken along line II-II of FIG. 10 in an embodiment.

Fig. 12 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

Fig. 13 is a simulation diagram of the reflection coefficient and the transmission coefficient of an electromagnetic wave signal of a predetermined frequency band passing through a conventional battery cover.

Fig. 14 is a simulation diagram illustrating a reflection coefficient and a transmission coefficient when the electronic device of the present application receives and transmits electromagnetic wave signals in a predetermined frequency band.

Fig. 15 is a simulation diagram illustrating a variation curve of the transmission coefficient with the magnetic permeability when the electronic device of the present application receives and transmits electromagnetic wave signals in a predetermined frequency band.

Fig. 16 is a simulation diagram illustrating a variation curve of the reflection coefficient with the magnetic permeability when the electronic device of the present application receives and transmits electromagnetic wave signals in a predetermined frequency band.

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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the 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 explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application provides an electronic device 1, wherein the electronic device 1 may be, but is not limited to, any device with communication function. For example: the system comprises intelligent equipment with a communication function, such as a tablet Computer, a mobile phone, an electronic reader, a remote controller, a Personal Computer (PC), a notebook Computer, vehicle-mounted equipment, a network television, wearable equipment and the like. Please refer to fig. 1, fig. 2 and fig. 3. Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application; FIG. 2 is a schematic cross-sectional view taken along line I-I of FIG. 1 in one embodiment; fig. 3 is a schematic diagram of an antenna module receiving and transmitting an electromagnetic wave signal in a predetermined frequency band. The electronic device 1 includes an antenna module 10 and a wave-transparent structure 30. The antenna module 10 is configured to receive and transmit electromagnetic wave signals in a preset frequency band within a preset range of directions. The wave-transparent structure 30 includes a substrate 310 and magnetic particles 320. At least a part of the substrate 310 is located within the preset direction range, and the at least a part of the substrate 310 located within the preset direction range has a first transmittance to electromagnetic wave signals of a preset frequency band. The magnetic particles 320 are doped in the at least part of the substrate 310, so that the electronic device 1 has a second transmittance in a region corresponding to the magnetic particles 320, wherein the second transmittance is greater than the first transmittance.

It should be noted that the terms "first", "second", and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.

When the antenna module 10 receives and transmits the electromagnetic wave signal, the strength of the electromagnetic wave signal in the predetermined direction is preferably higher when the antenna module 10 deviates from the predetermined direction by a predetermined degree (for example, 10 °) in a three-dimensional space, and therefore, the predetermined direction range includes the predetermined direction and the predetermined degree deviation from the predetermined direction, the predetermined direction may be a direction perpendicular to a receiving and transmitting plane of the antenna module 10 receiving and transmitting the electromagnetic wave signal, in fig. 3, the dashed line a is taken as the predetermined direction, and the dashed line b and the dashed line c respectively form a certain included angle with the dashed line a, in this embodiment, the degree between the dashed line b and the dashed line c and the dashed line a is β.

The electromagnetic wave signal may be, but is not limited to, an electromagnetic wave signal in a millimeter wave band or an electromagnetic wave signal in a terahertz band. Currently, in the fifth generation mobile communication technology (5th generation wireless systems, 5G), according to the specification of the 3GPP TS 38.101 protocol, a New Radio (NR) of 5G mainly uses two sections of frequencies: FR1 frequency band and FR2 frequency band. Wherein, the frequency range of the FR1 frequency band is 450 MHz-6 GHz, also called sub-6GHz frequency band; the frequency range of the FR2 frequency band is 24.25 GHz-52.6 GHz, and belongs to the millimeter Wave (mm Wave) frequency band. The 3GPP Release 15 specification specifies that the current 5G millimeter wave frequency band includes: n257(26.5 to 29.5GHz), n258(24.25 to 27.5GHz), n261(27.5 to 28.35GHz) and n260(37 to 40 GHz).

The at least part of the substrate 310 doped with the magnetic particles 320 may be considered as a wave-transparent structure 30, and the wave-transparent structure 30 may have any one of single-frequency single polarization, single-frequency dual polarization, dual-frequency single polarization, wideband single polarization, and wideband dual polarization. The wave-transparent structure 30 has any one of a dual-frequency resonance response, a single-frequency resonance response, a broadband resonance response, or a multi-frequency resonance response.

The substrate 310 may be made of, but not limited to, glass, ceramic, plastic, etc. The material of the magnetic particles 320 may be, but not limited to, a magnetic rare earth material, a ferrite, etc., and the magnetic rare earth material and the ferrite material are in a granular form. The rare earth material that is magnetic may be, but is not limited to, neodymium, boron, and the like.

Since the at least part of the substrate 310 doped with the magnetic particles 320 can be regarded as the wave-transparent structure 30, the reason why the wave-transparent structure 30 is applied to the electronic device 1 to improve the penetration of the electromagnetic wave signal is that: the magnetic permeability of the substrate 310 doped with the magnetic particles 320 is improved, and the magnetic loss angle is small, so that the reflectivity of the electromagnetic wave signal of the preset frequency band can be reduced, and the transmittance of the electromagnetic wave signal of the preset frequency band is improved. So-called permeability, english name: magnetic permability, a physical quantity that characterizes the magnetism of a magnetic medium.

Referring to fig. 4 and 5, fig. 4 is a schematic view of a structural model of a millimeter wave antenna; fig. 5 is a schematic circuit model diagram of the millimeter wave antenna. In general, an antenna is understood to be a "single port network" where impedance matching is performed at the input port of the antenna to achieve matching with a back-end transmitter or receiver. However, when the antenna module 10 is used for transceiving electromagnetic wave signals in the millimeter wave band, the antenna module 10 is equivalent to a "two-port network" or even a multi-port network, and taking the "two-port network" as an example, the radiating end in the antenna module 10 can be understood as an "apparent" transmission line connecting the transceivers and the spatial region in the antenna response lobe pattern. In other words, when the antenna module 10 is used for transceiving electromagnetic wave signals in a millimeter wave frequency band, the antenna module 10 includes a radio frequency transceiving module 110 (also referred to as a transmitter or a receiver), an antenna transceiving section 120, an impedance matching network Rr, and an "apparent" resistance R0. Wherein the "apparent" resistance R0 is the resistance of the "apparent" transmission line 111. It can be seen that when the frequency band of the electromagnetic wave signal transceived by the antenna transceiving part 120 is not a free space, additional reflection is introduced, thereby changing the impedance characteristic of the input port of the transceiver. In fig. 5, a1 is the input voltage of the 1 port P1 of the transceiver, b1 is the reflected voltage of the 1 port of the transceiver, a2 is the input voltage of the 2 port of the transceiver, and b2 is the reflected voltage of the 2 port P2 of the transceiver; s is a scattering matrix, S11 represents the input reflection coefficient, i.e., return loss; s12 represents a reverse transmission coefficient, i.e., isolation; s21 represents a forward transmission coefficient, that is, a gain; s22 represents the output reflection coefficient, i.e. the output return loss, in and i are both reflection coefficients, and the equivalent model of the antenna module 10 is:

wherein the content of the first and second substances,

to obtain:

therefore, when the antenna module 10 is used for transceiving electromagnetic wave signals in a millimeter wave frequency band, additional reflection is introduced, so that the electromagnetic wave signals radiated by the antenna module 10 cannot completely penetrate through the free space radiated by the substrate 310, or the electromagnetic wave signals received by the antenna module 10 cannot completely penetrate through the substrate 310 and are received by the antenna module 10.

In the electronic device 1 provided by the present application, the magnetic particles 320 are doped in the substrate 310 and located in the at least part within the preset direction range to form the wave-transparent structure 30, so that when the antenna module 10 radiates an electromagnetic wave signal in a preset frequency band, the transmittance of the electromagnetic wave signal in the preset frequency band transmitted to the outside of the electronic device 1 is improved by the action of the wave-transparent structure 30; when the antenna module 10 receives an electromagnetic wave signal of a preset frequency band, the transmittance of the electromagnetic wave signal of the preset frequency band transmitted to the inside of the electronic device 1 is improved through the effect of the wave-transparent structure 30, so that the influence of components (such as the battery cover 20 and the like) in the electronic device 1 on the antenna module 10 to receive and transmit the electromagnetic wave signal of the preset frequency band is reduced, the frequency selection bandwidth is large, the insertion loss is small, and the communication performance of the electronic device 1 is improved.

In one embodiment, the magnetic permeability u of the substrate 310 doped with the magnetic particles 320 satisfies: u is more than 1 and less than or equal to 3, and the second transmittance is larger as the magnetic permeability is larger.

The magnetic permeability of the substrate 310 doped with the magnetic particles 320 means the magnetic permeability of the whole body formed by the doped magnetic particles 320 and the substrate 310. When the parameters of the substrate 310 and the magnetic particles 320 are constant, for example, the material and the thickness of the substrate 310 are constant, the material and the particle size of the magnetic particles 320 are constant, and the doping concentration is constant, the magnetic permeability u is: u is more than 1 and less than or equal to 3, and the second transmittance is higher as the magnetic permeability is higher. In other words, the second transmittance is minimum when the magnetic permeability u is at a minimum value in the range of 1 < u ≦ 3; when the magnetic permeability u is 3, the second transmittance is maximum.

In one embodiment, the doping concentration m of the magnetic particles 320 in the substrate 310 satisfies: m is more than or equal to 1% and less than or equal to 10%, and the larger the doping concentration is, the larger the second transmittance is.

When the parameters of the substrate 310 and the magnetic particles 320 are a little, for example, when the material and the thickness of the substrate 310 are constant, the material of the magnetic particles 320 is constant, and the particle size is constant, the doping concentration m of the magnetic particles 320 in the substrate 310 satisfies: when m is more than or equal to 1% and less than or equal to 10%: when the doping concentration m is 1%, the second transmittance is minimum; when the doping concentration m is 10%, the second transmittance is maximum.

In one embodiment, the magnetic particles 320 have a particle size d that satisfies: d is less than or equal to 50 um.

The particle diameter d of the magnetic particles 320 is not more than 50um, so as to be doped into the substrate 310, so that the doping is uniform, and the transmittance of the substrate 310 to the electromagnetic wave signal in the preset frequency band is improved. Further, the particle diameter d of the magnetic particle 320 is not greater than 50um, which can ensure that the magnetic particle 320 is not easily observed visually after being doped in the substrate 310, and when the substrate 310 forms part of the appearance surface of the electronic device 1, the magnetic particle 320 is not easily observed, so that the appearance consistency of the appearance surface formed by the substrate 310 can be maintained.

In one embodiment, referring to FIG. 6, FIG. 6 is a cross-sectional view taken along line I-I of FIG. 1 in accordance with another embodiment. The electronic device 1 includes a battery cover 20 and a screen 50. The battery cover 20 includes a back plate 210 and a frame 220 connected to the periphery of the back plate 210 in a bent manner, the screen 50 and the back plate 210 are arranged at an interval, the battery cover 20 and the screen 50 are matched to form an accommodating space 20a, the accommodating space 20a is used for accommodating the antenna module 10, and the substrate 310 is supported on the back plate 210 or the frame 220 of the battery. In the schematic diagram of the present embodiment, the substrate 310 is carried on the frame 220 as an example.

The screen 50 is a member for displaying contents such as characters, images, and video in the electronic device 1. The screen 50 may be a component having only a display function, or may be a component integrating display and touch functions. In this embodiment, the screen 50 further includes a screen body 510 and a cover plate 520 disposed on a side of the screen body 510 away from the back plate 210, so as to protect the screen body 510.

The battery cover 20 may be an integral structure or a separate structure, when the battery cover 20 is an integral structure, the frame 220 and the back plate 210 are an integral body, and the frame 220 is formed by bending and extending from the periphery of the back plate 210; when the battery cover 20 is a separate structure, the frame 220 and the back plate 210 are separately prepared and connected together. The material of the battery cover 20 may be, but is not limited to, glass, ceramic, plastic, etc.

The substrate 310 is carried on the back plate 210 of the battery cover 20 or the frame 220, and includes the following conditions. When the substrate 310 is supported on the back plate 210 of the battery cover 20, the substrate 310 is disposed on the inner surface of the back plate 210, or the substrate 310 is embedded in the back plate 210, or the substrate 310 is disposed on the outer surface of the back plate 210, as long as the substrate 310 is supported on the back plate 210. Correspondingly, when the substrate 310 is supported on the frame 220, the substrate 310 is disposed on the inner surface of the frame 220, or the substrate 310 is embedded in the frame 220, or the substrate 310 is disposed on the outer surface of the frame 220, as long as the substrate 310 is supported on the frame 220. In the schematic diagram of the present embodiment, the substrate 310 is disposed on the inner surface of the back plate 210 as an example. The material of the substrate 310 may be the same as that of the battery cover 20, or may be different from that of the battery cover 20.

In one embodiment, the electronic device 1 further includes a middle frame 40 and a circuit board 60. The middle frame 40 is shaped like a rectangular parallelepiped or a substantially rectangular parallelepiped. Generally, the material of the middle frame 40 is metal, such as aluminum magnesium alloy, and the middle frame 40 has a large structural strength to support the screen 50, the circuit board 60, and the like in the electronic device 1. Meanwhile, the middle frame 40 constitutes a ground pole of the electronic apparatus 1. The circuit board 60 is electrically connected to the antenna module 10. The circuit board 60 may be directly or indirectly disposed on the middle frame 40, in this embodiment, the circuit board 60 is directly disposed on the middle frame 40, and the circuit board 60 and the screen 50 are respectively disposed on two opposite sides of the middle frame 40. The antenna module 10 may be disposed on the circuit board 60, or may be disposed on the middle frame 40. In the schematic diagram of the present embodiment, the antenna module 10 is disposed on the middle frame 40 for illustration.

Referring to fig. 7, fig. 7 is a circuit block diagram of an electronic device according to an embodiment of the present application. The circuit board 60 may be provided with an rf transceiver 610 and an rf front-end module 620. The rf transceiver 610 is electrically connected to the rf front-end module 620, and the rf front-end module 620 is electrically connected to the antenna module 10. When the antenna module 10 is configured to transmit an electromagnetic wave signal in a preset frequency band, the radio frequency transceiver 610 is configured to receive a baseband signal and convert the baseband signal into a radio frequency signal. The rf front-end module 620 is electrically connected to the rf transceiver 610, and is configured to receive the rf signal and perform filtering, amplitude amplification, and other processing on the rf signal. The antenna module 10 is electrically connected to the rf front-end module 620, and is configured to convert the rf signal processed and output by the rf front-end module 620 into an electromagnetic wave signal in a preset frequency band. Correspondingly, when the antenna module 10 is configured to receive an electromagnetic wave signal in a preset frequency band, the antenna module 10 receives the electromagnetic wave signal in the preset frequency band and converts the electromagnetic wave signal into a radio frequency signal. The radio frequency front end module 620 is electrically connected to the antenna module 10, receives the radio frequency signal output by the antenna module 10, and performs filtering, amplitude reduction, and the like on the radio frequency signal. The rf transceiver 610 is electrically connected to the rf front-end module 620, receives the rf signal processed by the rf front-end module 620, and converts the rf signal into a baseband signal.

In one embodiment, referring to FIG. 8, FIG. 8 is a cross-sectional view taken along line I-I of FIG. 1 in accordance with another embodiment. The electronic device 1 includes a battery cover 20 and a screen 50. The battery cover 20 includes a back plate 210 and a frame 220 connected to the periphery of the back plate 210 in a bending manner. The screen 50 is disposed on a side of the frame 220 away from the back plate 210, the battery cover 20 is matched with the screen 50 to form an accommodating space 20a, and the accommodating space 20a is used for accommodating the antenna module 10. The electronic device 1 includes a battery cover 20, and the substrate 310 is at least a portion of the back plate 210 or at least a portion of the frame 220 of the battery cover 20.

Please refer to the related descriptions above for the battery cover 20 and the screen 50, which are not described herein again. In this embodiment, the substrate 310 is at least a part of the back plate 210 of the battery cover 20 or at least a part of the frame 220. In other words, the magnetic particles 320 are directly doped in the battery cover 20, and the battery cover 20 constitutes the substrate 310. In the present embodiment, the magnetic particles 320 are directly doped in the frame 220 as an example.

In one embodiment, the electronic device 1 further includes a middle frame 40 and a circuit board 60. Please refer to the related description above for the middle frame 40 and the circuit board 60, which are not described herein again.

Referring to fig. 9, fig. 9 is a schematic back view of an electronic device according to an embodiment. In the present embodiment, the magnetic particles 320 are doped on the battery cover 20 to form a predetermined pattern 20b on the outer surface of the battery cover 20.

In the present embodiment, the predetermined pattern 20b is formed on the outer surface of the battery cover 20 by using the magnetic doping particles, so that the purpose of passing through an electromagnetic wave signal of a predetermined frequency band can be achieved, and the predetermined pattern 20b can be formed, thereby improving the recognition degree of the electronic device 1.

In one embodiment, when the magnetic particles 320 are doped on the battery cover 20, the entire doping concentration of the doped portion may be uniform; it is also possible that a part of the doped portion has a doping concentration greater than that of another part to form the predetermined pattern 20b of the cubic effect.

Referring to fig. 10 and 11, fig. 10 is a schematic structural diagram of an electronic device according to another embodiment of the present application; FIG. 11 is a sectional view taken along line II-II of FIG. 10 in an embodiment. The electronic device 1 includes a middle frame 40, a battery cover 20, and a screen 50. The middle frame 40 includes a frame body 410 and a metal frame 420. The battery cover 20 and the screen 50 are respectively disposed at two opposite sides of the frame body 410, and the metal frame 420 is bent and connected to the periphery of the frame body 410 and protrudes from two opposite surfaces of the frame body 410. The metal frame 420 has a first surface 42a and a second surface 42b opposite to each other, the first surface 42a is disposed away from the frame body 410 and forms at least a part of an appearance surface of the electronic device 1, the metal frame 420 is provided with a gap 420a, the gap 420a penetrates through the first surface 42a and the second surface 42b, and the substrate 310 is embedded in the gap 420 a.

The metal frame 420 is provided with the gap 420a, which is beneficial to the transmission of electromagnetic wave signals in a preset frequency band. The substrate 310 is embedded in the gap 420a, and the substrate 310 is doped with the magnetic particles 320, so that the transmittance of the electromagnetic wave signal in a preset frequency band can be further improved.

In one embodiment, the middle frame 40 further includes an insulating portion 430, a portion of the insulating portion 430 is disposed on the frame body 410, another portion of the insulating portion 430 fills the gap 420a, and the insulating portion 430 filling the gap 420a forms the substrate 310.

The insulating portion 430 may be formed on the housing body 410 and the metal middle frame 40 by injection molding, but is not limited thereto. The insulating portion 430 is partially disposed on the frame body 410, and at least a portion of the screen 50 and the circuit board 60 is disposed on the insulating portion 430. The middle frame 40 includes an insulating portion 430, and at least a portion of the components carried on the middle frame 40 is disposed on the insulating portion 430, so that damage to the components carried on the middle frame 40 when the components carried on the middle frame 40 are directly disposed on the frame body 410 and the electronic device 1 is impacted by external force can be avoided.

In one embodiment, the doping concentration of the magnetic particles 320 adjacent to the first surface 42a is less than the doping concentration of the magnetic particles 320 facing away from the first surface 42 a.

Generally, the color of the substrate 310 doped with the magnetic particles 320 is changed compared to the color of the substrate 310 not doped with the magnetic particles 320. The doping concentration of the magnetic particles 320 adjacent to the first surface 42a is less than that of the magnetic particles 320 away from the first surface 42a, in other words, the doping concentration of the magnetic particles 320 adjacent to the appearance surface is less, so that the appearance surface of the substrate 310 is prevented from being greatly affected by doping of the magnetic particles 320 as much as possible.

Referring to fig. 12, fig. 12 is a schematic structural diagram of an electronic device according to another embodiment of the present disclosure. The metal frame 420 of the electronic device 1 includes a first frame 421 and a second frame 422 disposed opposite to each other, and the metal frame 420 further includes a third frame 423 and a fourth frame 424 disposed opposite to each other, wherein the third frame 423 is connected to one end of the first frame 421 and one end of the second frame 422 in a bent manner, and the fourth frame 424 is connected to the other end of the first frame 421 and the other end of the second frame 422 in a bent manner. The length of the third frame 423 is smaller than the length of the first frame 421 and smaller than the length of the second frame 422. The length of the fourth frame 424 is smaller than the length of the first frame 421 and smaller than the length of the second frame 422. In other words, the first frame 421 and the second frame 422 are long sides of the electronic device 1, and the third frame 423 and the fourth frame 424 are short sides of the electronic device 1. The slit 420a is opened at a position where the first frame 421 is adjacent to the third frame 423; alternatively, the slit 420a is opened at a position where the first frame 421 is adjacent to the fourth frame 424; alternatively, the slit 420a is opened at a position where the first frame 421 is adjacent to the fourth frame 424; alternatively, the slot 420a of the antenna module 10 is opened at a position of the second frame 422 adjacent to the third frame 423; alternatively, the slit 420a is opened at a position where the second frame 422 is adjacent to the fourth frame 424; alternatively, the slit 420a is opened at a position of the third frame 423 adjacent to the first frame 421; alternatively, the slit 420a is opened at a position of the third frame 423 adjacent to the second frame 422; alternatively, the slit 420a is opened at a position corresponding to the fourth frame 424 adjacent to the first frame 421; alternatively, the slit 420a is opened at a position of the fourth frame 424 adjacent to the second frame 422; alternatively, the slit 420a is opened at a connection position of the first frame 421 and the third frame 423; alternatively, the slit 420a is opened at a connection position of the first frame 421 and the fourth frame 424; or, the slit 420a is opened at a connection position corresponding to the second frame 422 and the third frame 423; alternatively, the slit 420a is opened at a position corresponding to a connection between the second frame 422 and the fourth frame 424. The arrangement of the gap 420a makes the user not easy to hold the electronic device 1 by hand, so that the communication effect of the electronic device 1 can be improved. In the schematic diagram of the present embodiment, the slit 420a is opened at a position of the first frame 421 adjacent to the fourth frame 220.

Please refer to fig. 13, where fig. 13 is a simulation diagram illustrating a reflection coefficient and a transmission coefficient of an electromagnetic wave signal in a predetermined frequency band when the electromagnetic wave signal passes through a conventional battery cover, in other words, the battery cover 20 without the magnetic particles 320 is not provided with the wave-transparent structure 30 formed by the magnetic particles 320, and certainly, no other wave-transparent structure 30 is provided in the antenna module 10 in the electronic device 1. in the present diagram, a horizontal axis is frequency and a unit is GHz, and a vertical axis is a reflection coefficient or a transmission coefficient and a unit is db. in the diagram, a curve ① represents a reflection coefficient S11 curve of the battery cover 20 and a curve ② represents a transmission coefficient S21 curve of the battery cover 20.

Referring to fig. 14, fig. 14 is a simulation diagram of a reflection coefficient and a transmission coefficient when the electronic device of the present application receives and transmits an electromagnetic wave signal in a predetermined frequency band, where the substrate 310 is a glass-made battery cover 20, and the magnetic particles 320 are doped to make the magnetic permeability u of the battery cover 20 equal to 6.8 and the magnetic loss angle uf equal to 0.02, and further, the thickness of the battery cover 20 is 0.55mm, the dielectric constant Dk equal to 6.8 and the dielectric loss Df equal to 0.02, in the diagram, the horizontal axis is frequency, the vertical axis is GHz, the vertical axis is the reflection coefficient or the transmission coefficient, and the unit is db, in the diagram, a curve ① represents a reflection coefficient S11 curve of the battery cover 20, and a curve ② represents a transmission coefficient S21 curve of the battery cover 20.

Referring to fig. 15, fig. 15 is a simulation diagram of a change curve of a transmission coefficient with a magnetic permeability when an electronic device of the present application receives and transmits an electromagnetic wave signal in a preset frequency band, in the present diagram, a horizontal axis is frequency, a vertical axis is a transmission coefficient, and a unit is db, a simulation condition is that a cell cover 20 using a glass substrate 310 is used to perform simulation by doping magnetic particles 320 so that the magnetic permeability of the cell cover 20 is different, in the drawing, a curve ① represents a transmission coefficient S21 curve when the magnetic permeability u of the cell cover 20 is 2, a curve ② represents a transmission coefficient S21 curve when the magnetic permeability u of the cell cover 20 is 3, a curve ③ represents a transmission coefficient S21 curve when the magnetic permeability u of the cell cover 20 is 4, a curve ④ represents a transmission coefficient S21 curve when the magnetic permeability u of the cell cover 20 is 5, a curve ⑤ represents a transmission coefficient S8 curve when the magnetic permeability u of the cell cover 20 is 5966, a curve ⑥ represents a transmission coefficient S92 curve when the magnetic permeability u of the cell cover 20 is 7, a curve 638 curve when the magnetic permeability of the cell cover 20 is larger, a curve when the magnetic permeability u of the cell cover 20 is a transmission coefficient S26 is a transmission coefficient S28 curve, a curve when the magnetic permeability curve 19 curve when the magnetic permeability u of the cell cover 20 is a transmission coefficient S28 curve, a transmission coefficient S28 curve when the transmission coefficient S28 curve is larger, a transmission coefficient S28 curve when the transmission coefficient S28 curve of the cell cover 20 is a transmission coefficient S28 curve when the transmission coefficient S19 curve of the transmission coefficient is a transmission coefficient curve of the cell cover 20 is a transmission coefficient curve of the transmission coefficient S42 curve of the transmission frequency band is a transmission frequency band, a transmission band is a transmission band, a transmission coefficient S19 curve of the frequency band, a transmission.

Referring to fig. 16, fig. 16 is a simulation diagram of a change curve of a reflection coefficient with magnetic permeability when an electronic device of the present application receives and transmits an electromagnetic wave signal in a preset frequency band, in the present diagram, a horizontal axis is frequency, a unit is GHz, a vertical axis is a reflection coefficient, and a unit is db, a simulation condition is that a cell cover 20 using a substrate 310 made of glass is subjected to simulation by doping magnetic particles 320 so that magnetic permeability of the cell cover 20 is different, in the drawing, a curve ① represents a reflection coefficient S11 curve when magnetic permeability u of the cell cover 20 is 2, a curve ② represents a reflection coefficient S11 curve when magnetic permeability u of the cell cover 20 is 3, a curve ③ represents a reflection coefficient S11 curve when magnetic permeability u of the cell cover 20 is 4, a curve ④ represents a reflection coefficient S11 curve when magnetic permeability u of the cell cover 20 is 5, a curve ⑤ represents a reflection coefficient S11 curve when magnetic permeability u of the cell cover 20 is 5966, a curve ⑥ represents a reflection coefficient S11 curve when magnetic permeability u of the cell cover 20 is 7, a curve when magnetic permeability u of the cell cover 20 is 5, a curve 26 represents a reflection coefficient S11 curve when magnetic permeability u of the cell cover 20 is smaller, a reflection coefficient S28 curve when magnetic permeability curve is a reflection coefficient S28 curve when the magnetic permeability curve is a reflection coefficient S28 curve in a reflection coefficient S28 curve when the cell cover 20 is a reflection coefficient curve, a reflection coefficient curve in a reflection coefficient curve 20 is a reflection coefficient curve in a reflection coefficient curve 11, a reflection coefficient curve in a reflection frequency band, a reflection coefficient curve 11 curve when the frequency band, a reflection coefficient curve when the frequency band is a reflection coefficient curve 19 curve when the frequency band, a reflection coefficient curve 19 curve when the frequency band is satisfied, a.

It should be understood that, although the antenna module 10 in the background art and the embodiments of the present application take 5G millimeter waves as an example, the present application is not limited thereto, and the antenna module 10 in the present application may also be an antenna module 10 supporting communication of other protocols, and is not limited thereto.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.