CN116318215A

CN116318215A - Electronic equipment and FM antenna device thereof

Info

Publication number: CN116318215A
Application number: CN202310538073.5A
Authority: CN
Inventors: 曹攀; 高伟; 陈思杭; 张煜晨; 张海涛
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-06-23
Anticipated expiration: 2043-05-15
Also published as: CN116318215B

Abstract

The application provides an electronic device and an FM antenna device thereof. The electronic equipment can multiplex the digital cellular mobile communication system GSM antenna/5G antenna/global positioning system GPS antenna/wireless fidelity Wi-Fi antenna and other antennas and the camera metal decoration to receive the FM signals, so that the component cost can be saved, and the receiving performance of the FM signals can be improved.

Description

Electronic equipment and FM antenna device thereof

Technical Field

The present disclosure relates to the field of wireless communications, and in particular, to an electronic device and an FM antenna device thereof.

Background

In order to meet the requirement of users for listening to frequency modulated (frequency modulation, FM) broadcast programs, most electronic devices currently provide users with FM radio functions. When a user uses the FM radio function, the electronic device needs to receive an FM signal through an FM antenna device provided thereon.

Disclosure of Invention

In a first aspect, the application provides an electronic device, where the electronic device includes a camera metal decoration, a first antenna, a first receiving circuit, a second receiving circuit, a third receiving circuit, and a signal processing module, where the first receiving circuit, the second receiving circuit, the third receiving circuit, and the signal processing module are disposed on a main board, and the camera metal decoration is connected to an elastic sheet on the main board through a metal extension component. The input end of the first receiving circuit and the input end of the second receiving circuit are connected with the first antenna. The first receiving circuit is used for receiving a first signal, the second receiving circuit is used for receiving a second signal, and the frequency bands of the first signal and the second signal are different. The third receiving circuit is also connected with the elastic sheet and is used for receiving the first signal. The output signals of the first receiving circuit and the third receiving circuit are input to the signal processing module after being overlapped, and the signal processing module is used for processing the overlapped output signals.

In some embodiments, the first receiving circuit and the third receiving circuit are the same receiving circuit.

In some embodiments, the main board further includes a first device, one end of the first device is grounded, the other end of the first device is also connected with the elastic sheet, and the first device is used for discharging static electricity distributed on the camera metal decoration to the ground.

In some embodiments, the first device comprises: transient suppression diodes or resistors.

In some embodiments, the electronic device further includes a second antenna, a fourth receiving circuit, and a fifth receiving circuit, where an input end of the fourth receiving circuit and an input end of the fifth receiving circuit are connected to the second antenna, the fourth receiving circuit is configured to receive a third signal, and the fifth receiving circuit is configured to receive a first signal, where a frequency band of the third signal is different from a frequency band of the first signal and a frequency band of the second signal. The output signals of the fifth receiving circuit and the output signals of the first receiving circuit and the third receiving circuit are input to the signal processing module after being overlapped.

In some embodiments, the third receiving circuit and the fifth receiving circuit are the same receiving circuit.

In some embodiments, the frequency band of the first signal is a frequency band of a frequency modulated FM signal.

In some embodiments, the signal processing module includes an audio output module, where the audio output module is configured to convert an electrical signal generated by superimposing output signals of the first receiving circuit and the third receiving circuit into a sound signal.

In some embodiments, the frequency band of the second signal comprises: the frequency band of the global system for mobile communications GSM signal, the frequency band of the 5G signal, the frequency band of the Wi-Fi signal or the frequency band of the global positioning system GPS signal.

In some embodiments, the frequency band of the third signal comprises: the frequency band of the GSM signal, the frequency band of the 5G signal, the frequency band of the Wi-Fi signal or the frequency band of the GPS signal.

Drawings

Fig. 1A is a schematic diagram of an electronic device with FM radio function according to an embodiment of the present application;

fig. 1B is another electronic device with FM radio function according to an embodiment of the present application;

fig. 2A is an electronic device 100 for implementing FM radio functions according to an embodiment of the present application;

fig. 2B is a schematic view of a camera metal decoration provided in an embodiment of the present application;

fig. 2C is a simulation diagram of an LC filter network according to an embodiment of the present application;

FIG. 2D is another electronic device 100 for implementing FM radio functions provided by embodiments of the present application;

FIG. 3A is a schematic diagram of another electronic device 100 for implementing FM radio functions according to an embodiment of the present application;

FIG. 3B is another electronic device 100 for implementing FM radio functions provided by embodiments of the present application;

fig. 3C is another electronic device 100 for implementing FM radio functions according to an embodiment of the present application.

Detailed Description

The terminology used in the following embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application to the specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It should also be understood that the term "and/or" as used in this application is meant to encompass any or all possible combinations of one or more of the listed items. In the present embodiments, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Fig. 1A illustrates an electronic device with FM radio functionality according to an embodiment of the present application.

As shown in fig. 1A, an electronic device may include: a flexible circuit board (flexible printed circuit, FPC) monopole antenna, feed point, antenna matching and filtering network, low noise amplifier (low noise amplifier, LNA), audio processor and speaker. The antenna matching and filtering networks, the LNA, the audio processor, and the speaker may be disposed on a motherboard. Wherein:

the FPC monopole antenna may be used to receive radio signals, including Frequency Modulation (FM) signals, etc., radiated onto the electronic device and convert them into electrical signals. Here, frequency modulation (may also be referred to as frequency modulation) may refer to a signal modulation scheme that uses frequency variation to carry information.

In the embodiment of the present application, the FM signal (may also be referred to as a first signal) may refer to a signal generated based on a frequency modulation manner (the signal is often a signal for playing a broadcast).

The material of the feed point can be a metal spring plate. The feed point can be connected with the FPC monopole antenna and the main board and is used for transmitting the electric signals on the FPC monopole antenna to the main board so that devices on the main board can process the electric signals.

The antenna matching network and the filter network may include an inductance element and/or a capacitance element, which are used to perform impedance matching on the FPC monopole antenna, so that the FPC monopole antenna can receive a radio signal (mainly an FM signal in the embodiment of the present application) with a certain frequency bandwidth with low energy loss, and suppress an interference signal outside the frequency bandwidth. In fig. 1A, the connection manner of the capacitor and the inductor in the antenna matching network and the filter network is only used for exemplary explanation of the present application, and no specific limitation is made to the present application. In a specific implementation, the connection manner of the capacitor and the inductor in the antenna matching network and the filter network may be different from that shown in fig. 1A.

The LNA may be used to amplify the power of the FM signal in the event of low noise interference to facilitate subsequent devices processing the FM signal.

The input of the audio processor may be connected to the LNA and the output may be connected to the speaker. The audio processor may demodulate the FM signal amplified by the LNA, and convert the demodulated FM signal from an analog signal to a digital signal and perform digital signal processing.

The speaker may be used to convert the electrical signal into a sound signal, i.e. to play the FM signal processed by the audio processor as sound that can be heard by the user. Specifically, when an electrical signal is input to the voice coil of the speaker, the voice coil is moved by the electrical signal, so that the paper disc in the speaker vibrates and continuously pushes the air flow to make a sound.

Fig. 1A shows only some components of the electronic device that are relevant to FM radio functions, but the electronic device may include other components, such as a camera, a display screen, etc., as the application is not limited in this regard.

As can be seen from the components shown in fig. 1A, the electronic device needs to receive FM signals using an FPC monopole antenna. The FPC monopole antenna is arranged outside the main board and is connected with the main board. The FPC monopole antenna is made of metal, and the radiation performance of the FPC monopole antenna is interfered by other metal objects, so that the electronic equipment needs to reserve a clean space (a clearance area for short) for the FPC monopole antenna so as to ensure the radiation performance of the FPC monopole antenna, and therefore, the realization of the FM radio function of the electronic equipment is limited by the internal architecture layout and the clearance area of the electronic equipment. Meanwhile, because the electronic equipment needs to additionally arrange an FPC monopole antenna outside the main board, the component architecture cost of the electronic equipment is increased.

Fig. 1B illustrates another electronic device with FM radio functionality according to an embodiment of the present application.

As shown in fig. 1B, the electronic device may include: a digital cellular mobile communication system (global system for mobile communications, GSM) monopole antenna, a feed point, an FM matching network and filter network, a GSM matching network and filter network, an LNA, an audio processor, and a speaker. The feed point, FM matching network and filter network, GSM matching network and filter network, LNA, audio processor and speaker may be located on the motherboard. Wherein:

GSM monopole antennas may be used to receive radio signals (including FM signals, cellular signals in the GSM band, etc.) radiated onto electronic equipment and convert them to electrical signals. Wherein, the description of the FM signal may refer to the description in the embodiment shown in fig. 1A, and the cellular signal in the GSM band may be used to implement a communication function of the electronic device (for example, making a call, browsing the internet, watching video, etc.). The frequency of the cellular signal in the GSM band is higher than the FM signal.

The material of the feed point can be a metal spring plate. The feed point can be used for connecting the GSM monopole antenna and the main board, and transmitting the electric signals on the GSM monopole antenna to the main board, so that devices on the main board can process FM signals and cellular signals.

For the description of the FM matching network and the filtering network, reference may be made to the foregoing antenna matching network and filtering network shown in fig. 1A, which are not described herein. The FM matching network and the filter network can also be used for suppressing the interference of the cellular signal in the GSM frequency band on the FM signal.

The GSM matching network and filtering network may include inductive and/or capacitive elements for impedance matching the GSM monopole antenna so that the GSM monopole antenna can receive radio signals of a specified frequency bandwidth (in this embodiment, cellular signals of the GSM frequency band mainly) with low energy loss, while suppressing interfering signals outside the frequency bandwidth. The GSM matching network and filtering network may be used to suppress interference of FM signals with cellular signals. In fig. 1B, the connection manner of the capacitor and the inductor in the GSM matching network and the filter network is only used for exemplary explanation of the present application, and no specific limitation is made to the present application. In a specific implementation, the connection manner of the capacitor and the inductor in the GSM matching network and the filter network may be different from that shown in fig. 1B.

The description of the LNA may refer to the description of the embodiment shown in fig. 1A, which is not repeated here.

The description of the audio processor may refer to the description of the embodiment shown in fig. 1A, which is not repeated herein.

The description of the speaker may refer to the description of the embodiment shown in fig. 1A, which is not repeated herein.

Fig. 1B shows only some components of the electronic device that are relevant to FM radio functions, but the electronic device may include other components, such as a camera, a display screen, etc., as the application is not limited in this regard.

As can be seen from the components shown in fig. 1B, the electronic device needs to multiplex the GSM monopole antenna that receives the cellular signal in the GSM band to receive the FM signal. Because of the limited length of the GSM monopole antenna, the receiving performance of the GSM monopole antenna is not high when receiving FM signals. In addition, the interference of the cellular signal in the GSM frequency band on the FM signal cannot be completely eliminated, so that the quality of the FM signal processed by the audio processor is poor, and the quality of the audio finally played by the loudspeaker is not high.

To improve the above-described problems, the present embodiment provides an electronic device 100 for implementing FM radio functions.

The implementation method comprises the following steps: the electronic device 100 receives FM signals through a single antenna and camera metallic trim.

Fig. 2A schematically illustrates an electronic device 100 provided in an embodiment of the present application.

As shown in fig. 2A, the electronic device 100 may include: the GSM antenna 201 (may also be referred to as a first antenna), the dome 208, the transient suppression diode (transient voltage suppressor, TVS) 209, the first receiving circuit, the second receiving circuit, the third receiving circuit, and the FM back-stage processing and sound playback module 212 (may also be referred to as an audio playback module).

The GSM antenna 201 may be used to receive radio signals (including cellular signals in the GSM band, FM signals, etc.) radiated onto the electronic device 100 and convert the radio signals into electrical signals. For the description of the cellular signals (also referred to as GSM signals, second signals) and FM signals in the GSM band, reference may be made to the foregoing description, and no further description is given here.

In this embodiment, the input end of the first receiving circuit and the input end of the second receiving circuit are both connected to the GSM antenna 201.

The first receiving circuit may be used to receive FM signals, including a high-rejection filter 204, an amplifier 205, and the like. The input end of the high-resistance filter 204 may receive an electrical signal output by the GSM antenna 201. The output signal of the high-resistance filter 204 may be input to an amplifier 205. The high-impedance filter 204 may be used to suppress the signals of the GSM frequency band (e.g., 806 mhz-8231 mhz, 890 mhz-915 mhz, etc.) and other frequency bands from entering the amplifier 205 by FM signals. The output signal of the amplifier 205 may be input to an FM post-processing and audio playback module 212. The amplifier 205 may be a low noise amplifier for amplifying the power of the FM signal received by the GSM antenna 201 in the case of low noise interference, so as to obtain sufficient FM signal strength, so that the FM post-processing and sound amplification module 212 processes the amplified FM signal, so that the user may implement the FM radio function using the electronic device 100.

The second receiving circuit may be used to receive GSM signals, including a band reject filter 202 and a radio frequency Power Amplifier (PA) 203, etc. The input of the band reject filter 202 may receive an electrical signal output by the GSM antenna 201. The output signal of the band reject filter 202 may be input to a radio frequency power amplifier 203. The band reject filter 202 may be used to reject FM signals or signals in other frequency bands from entering the rf power amplifier 203 via cellular signals in the GSM frequency band (e.g., 806 mhz-8231 mhz, 890 mhz-915 mhz, etc.). The rf power amplifier 203 may be configured to amplify the power of the GSM signal with no distortion of the GSM signal, and obtain sufficient cellular signal strength for subsequent devices (not shown in fig. 2A) to process the amplified GSM signal so that a user may utilize the electronic device 100 to implement a communication function.

The camera metallic trim 206 may be used to receive radio signals (including FM signals, etc.) radiated onto the electronic device and convert them into electrical signals. The camera metallic trim 206 may include an extension block 207 and one or more camera metallic trim rings. As shown in fig. 2B, the metal decorative ring of the camera may specifically refer to a metal ring (or referred to as a metal ring) that is disposed around the camera, has a protection function, stably fixes the camera, and can prevent the camera from being scratched. Wire connections may be used between the plurality of metal rings (as shown in fig. 2A). Fig. 2B is merely for exemplary explanation of the camera metal trim ring, and does not limit the shape and position of the camera metal trim ring.

An extension block 207 in the camera metal trim 206 may connect with a spring 208 on the motherboard. The elastic piece 208 may be further connected to a third receiving circuit, so as to conduct the electrical signal on the camera metal decoration 206 to the third receiving circuit on the motherboard through the elastic piece 208, so that the third receiving circuit on the motherboard processes the electrical signal.

Meanwhile, in order to solve the electrostatic discharge (ESD) problem of the camera metal decoration 206, the extension block 207 and the elastic piece 208 may also be used to conduct the static electricity distributed on the camera metal decoration 206 to the TVS pipe 209. The ESD problem may refer to a problem that, during the use of the electronic device 100, the camera metal decoration 206 generates static electricity due to friction with other objects, so as to affect the circuit operation on the motherboard.

One end of the TVS tube 209 may be grounded and the other end may be connected to the spring 208. When the camera metallic trim 206 is distributed with static electricity, the TVS tube 209 may bleed the static electricity to ground to avoid static interference with devices (e.g., LC filter network 210, amplifier 205, etc.) on the electronic device 100.

In the present embodiment, the TVS tube 209 may be replaced with a resistor. The resistor can be used for discharging static electricity distributed on the camera metal decoration to the ground. In the embodiment of the application, the device for discharging the static electricity distributed on the camera metal decoration to the ground can be called a first device.

Generally, in order to solve the problem of static electricity generated by the camera metal decoration 206, the camera metal decoration 206 is connected to a PCB (motherboard) through a metal extension member (i.e. extension block 207), and specifically connected to a spring plate disposed on the PCB. Static electricity is typically generated by rubbing the camera metallic trim 206 during use of the electronic device 100 by a user. According to the embodiment of the application, the inherent characteristic that the camera metal decorating part 206 is connected with the main board is fully utilized, the camera metal decorating part 206 is developed into an antenna to be used, the existing structure can be fully utilized, the cost is reduced, and the natural wide radiation port of the camera metal decorating part 206 exposed in the external free space can be fully utilized.

The third receiving circuit may be for receiving FM signals. The third receiving circuit may include an LC filter network 210, an amplifier 211, and the like. An input of LC filter network 210 may receive an electrical signal output by camera metallic trim 206. The output signal of LC filter network 210 may be input to amplifier 211.LC filter network 210 may include inductive and/or capacitive elements. The LC filter network 210 may enable the camera metallic trim 206 to receive radio signals (mainly FM signals in the embodiments of the present application) of a specified frequency bandwidth while suppressing interfering signals outside the frequency bandwidth.

Preferably, the center frequency of LC filter network 210 may be the center frequency of the FM signal (e.g., 100Mhz, etc.). In addition, if the center frequency of the FM signal is 100MHz, the LC filter network 210 may preferably adopt a structure in which a 100 nanohenry (nH) inductor and a 27 picofarad (pF) capacitor are connected in parallel, so, as shown in fig. 2C, when the center frequency of the LC filter network 210 is the same as the center frequency of the FM signal, the impedance of the LC filter network 210 when processing the FM signal is low, so that the receiving performance of the camera metal decoration 206 for the FM signal can be improved, and interference of signals in other frequency bands than the FM signal can be eliminated.

In fig. 2A, the connection of the capacitor and the inductor in the LC filter network 210 is only used for exemplary explanation of the present application, and is not particularly limited thereto. In a specific implementation, the connection manner of the capacitor and the inductor in the LC filter network 210 may be different from that shown in fig. 2A, but the connection manner of the capacitor and the inductor in the LC filter network 210 may be related to the FM signal center frequency, so that the center frequency of the LC filter network 210 is the same as the FM signal center frequency.

The input of the amplifier 211 may receive an electrical signal (i.e., an FM signal) output by the LC filter network 210. The output signal of the amplifier 211 may be input to an FM post-processing and audio playback module 212. The amplifier 211 may be a low noise amplifier, and may be configured to amplify the power of the FM signal received by the camera metallic trim 206 under low noise interference, so as to obtain sufficient FM signal strength, so that the FM post-processing and sound amplification module 212 processes the amplified FM signal, and thus, a user may implement an FM radio function using the electronic device 100.

In the embodiment of the present application, the amplifier 205 and the amplifier 211 are narrowband (for example, the frequency band is less than 200 MHz) amplifiers, so as to improve the processing performance for FM signals and reduce the interference of signals in other frequency bands on FM signals.

In the embodiment of the present application, the gains of the amplifier 205 and the amplifier 211 may be preset fixed values. In this way, the efficiency of amplifying the signal power can be improved.

In the embodiment of the present application, the amplifier 205 and the amplifier 211 may be other types of amplifiers besides low noise amplifiers, which is not limited in this application.

The FM post-processing and sound playback module 212 may include, but is not limited to, an audio processor and speakers as shown in fig. 1A. After the output signals of the amplifier 205 and the amplifier 211 are overlapped, the output signals can be input to the FM post-processing and sound outputting module 212 for processing, so that the electronic device 100 can play the first audio that can be heard by the user, and the electronic device 100 can realize the FM radio function. Specific description will be made with reference to the embodiment shown in fig. 1A, and details thereof will not be repeated here.

In this embodiment, the band-stop filter 202, the rf power amplifier 203, the high-resistance filter 204, the amplifier 205, the spring 208, the TVS tube 209, the LC filter network 210, the amplifier 211, the FM post-processing and sound output module 212 may be disposed on a motherboard. That is, the first receiving circuit, the second receiving circuit, and the third receiving circuit are located on the motherboard.

Fig. 2A shows only some components of the electronic device 100 that are related to FM radio functions, but the electronic device 100 may include other components, such as a camera, a display screen, etc., as the present application is not limited in this regard.

In the embodiment of the present application, as shown in fig. 2A, the GSM antenna 201 may be replaced with a 5G antenna (also referred to as an NR antenna), a wireless fidelity (wireless fidelity, wi-Fi) antenna, a global positioning system (global positioning system, GPS) antenna (not shown in fig. 2A), etc. for receiving FM signals radiated onto the electronic device 100 in the form of radio waves. By way of example, a design for receiving FM signals based on a combination of camera metallic trim 206 and a single antenna may be as shown in table 1 below:

TABLE 1

The illustration in table 1 is for exemplary purposes only and is not meant to limit the present application in any way. In a specific implementation, the multiplexed antenna may be a different antenna than shown in table 1.

In the embodiment shown in fig. 2A, the electronic device 100 may multiplex the GSM antenna 201 and the camera metal decorative piece 206 to receive FM signals, so as to save component cost, and the electronic device 100 receives FM signals through the two components, so that the receiving performance for FM signals is better, and the playing quality of broadcast audio can also be improved. Meanwhile, since the electronic device 100 plays the broadcast through the FM post-processing and the speaker in the sound reproducing module 212, the effect that the user can receive the broadcast without wearing the earphone can be also achieved.

The first receiving circuit and the second receiving circuit may also receive and process two signals of other different frequency bands, such as two signals of different frequency bands of LTE B5 and 5G, respectively, not limited to FM signals and GSM signals. For this purpose, the circuit configuration of the first receiving circuit and the second receiving circuit, such as the filter used, also needs to be adapted to the signals they are to receive; the FM post-processing and audio playback module 212 may be replaced by a signal processing module adapted to process signals in a corresponding frequency band, such as a demodulation circuit for LTE B5 signals. The FM post-processing and audio playback module 212 is just a specific signal processing module for receiving FM signals, and the FM post-processing and audio playback module 212 may convert an electrical signal generated by superimposing output signals of the first receiving circuit and the third receiving circuit into an audio signal.

Fig. 2D illustrates another electronic device 100 provided in an embodiment of the present application.

As shown in fig. 2D, the electronic device 100 may include: the antenna comprises a GSM antenna 201, a band-stop filter 202, a radio frequency power amplifier 203, a camera metal decoration 206 (comprising an extension block 207), a shrapnel 208, a TVS tube 209, an LC filter network 210, an amplifier 211, an FM post-processing and sound amplifying module 212 and the like.

In the embodiment of the present application, the third receiving circuit may include an LC filter network 210 and an amplifier 211, for receiving FM signals. The input end of the third receiving circuit may be connected to the GSM antenna 201 and the camera metal trim 206, in this structure:

the input of LC filter network 210 may receive the electrical signals output by camera metallic trim 206 and GSM antenna 201. The LC filter network 210 may enable the camera metallic trim 206 and the GSM antenna 201 to receive radio signals (mainly FM signals in the embodiment of the present application) of a specified frequency bandwidth while suppressing interfering signals outside the frequency bandwidth.

The input end of the amplifier 211 may receive an electrical signal (i.e., an FM signal) output by the LC filter network 210, and the output signal of the amplifier 211 may be input to the FM post-processing and audio output module 212. The amplifier 211 may be used to amplify the power of the FM signal received by the camera metallic trim 206 and the GSM antenna 201 under the condition of low noise interference, so as to obtain sufficient FM signal strength, so that the FM post-processing and sound amplifying module 212 processes the amplified FM signal, and a user may implement an FM radio function by using the electronic device 100.

The FM post-processing and audio playback module 212 may include, but is not limited to, an audio processor and a speaker as shown in fig. 1A, and may be configured to receive the electrical signal output by the amplifier 211, process the electrical signal, and play the first audio that can be heard by the user based on the processed electrical signal, so that the electronic device 100 implements the FM radio function. Specific description will be made with reference to the embodiment shown in fig. 1A, and details thereof will not be repeated here.

In the embodiment shown in fig. 2D, the first receiving circuit shown in fig. 2A is replaced with a third receiving circuit, i.e. the first receiving circuit and the third receiving circuit are the same receiving circuit.

The connection and function of other components may refer to the description of the embodiment shown in fig. 2A, which is not repeated herein.

The implementation method is as follows: the electronic device 100 receives FM signals through multiple antennas and camera metallic trim.

Further, with reference to fig. 2A, fig. 3A schematically illustrates another electronic device 100 provided in an embodiment of the present application.

As shown in fig. 3A, the electronic device 100 may further include, in addition to the components shown in fig. 2A: the GPS antenna 213 (may also be referred to as a second antenna), the dome 214, and the fourth receiving circuit may be provided on the main board.

The GPS antenna 213 may be used to receive radio signals (including GPS signals and FM signals, etc.) radiated onto the electronic device 100 and convert the radio signals into electrical signals.

The GPS antenna 213 may be connected to the spring 214, and the spring 214 may also be connected to the input end of the third receiving circuit and the input end of the fourth receiving circuit, so as to be used for inputting the electrical signal on the GPS antenna 213 to the third receiving circuit and the fourth receiving circuit.

The fourth receiving circuit may include a GPS matching network and filtering network 215, an amplifier 216, and may be used to receive GPS signals. The input of the GPS matching network and filtering network 215 may receive the electrical signal of the GPS antenna 213 through the dome 214. The output signal of the GPS matching network and filtering network 215 may be input to an amplifier 216. The GPS matching network and filtering network 215 may be used to pass GPS signals while suppressing interference of FM signals and signals of other frequency bands so that the GPS signals may be power amplified by the amplifier 216 for processing the GPS signals by subsequent devices (not shown in fig. 3A) connected to the amplifier 216 so that the electronic device 100 may implement a positioning function.

The input of LC filter network 210 may receive the electrical signals output by camera metallic trim 206 and GPS antenna 213. Specific description reference may be made to the description of the embodiment shown in fig. 2A previously described.

The amplifier 211 may be used to amplify the FM signal received by the GPS antenna 213, the FM signal received by the camera metallic trim 206. Specific processing may be described with reference to the embodiment shown in fig. 2A.

With respect to the manner and function of connection of the other components, reference may be made to the description of the embodiment shown in FIG. 2A.

In the embodiment of the present application, the GPS antenna 213 may be replaced with an NR antenna, a Wi-Fi antenna, or the like, and the GSM antenna 201 may be replaced with an NR antenna, a Wi-Fi antenna, a GPS antenna, or the like, and the two antennas are different from each other so as to be used for receiving radio signals (including FM signals, etc.) radiated onto the electronic device 100. When the GPS antenna 213 is replaced with another antenna, the GPS matching network and filtering network 215 is also replaced with a matching network and filtering network that matches the antenna, so that the amplifier 216 amplifies signals (e.g., wi-Fi signals, 5G signals, etc.) received by the antenna other than FM signals.

For example, a design for receiving FM signals based on a combination of camera metallic trim 206 and multiple antennas may be shown in table 2 below:

TABLE 2

The illustration in table 2 is for exemplary purposes only and is not meant to limit the present application in any way. In a specific implementation, the multiplexed antenna may be a different antenna than shown in table 2.

In the embodiment shown in fig. 3A, the electronic device 100 may multiplex the camera metal trim 206 and two antennas to receive FM signals, which saves cost and is not limited by the internal architecture of the electronic device 100. In addition, the electronic device 100 receives the FM signal through the three components, so that the receiving performance of the FM signal is better, and the playing quality of the broadcast audio can be further improved.

Further, in connection with fig. 2D, fig. 3B schematically illustrates another electronic device 100 provided in an embodiment of the present application.

As shown in fig. 3B, the electronic device 100 may further include, in addition to the components shown in fig. 2D: a GPS antenna 213, a dome 214, a GPS matching network and filtering network 215, and an amplifier 216. Regarding the connection and the functions of the GPS antenna 213, the spring plate 214, the GPS matching network and the filter network 215, and the amplifier 216, reference may be made to the description of the embodiment shown in fig. 3A, which is not repeated herein. At this time, the input terminal of the LC filter network 210 may receive the electrical signals output from the camera metallic trim 206, the GSM antenna 201, and the GPS antenna 213.

Further, fig. 3C schematically illustrates another electronic device 100 according to an embodiment of the present application.

As shown in fig. 3C, the electronic device 100 may further include a GPS antenna 213, a dome 214, a fourth receiving circuit, and a fifth receiving circuit, in addition to the components shown in fig. 2A. The spring plate 214, the fourth receiving circuit, and the fifth receiving circuit may be disposed on the motherboard.

The GPS antenna 213 is connected to the spring plate 214 on the main board, and the input end of the fourth receiving circuit and the input end of the fifth receiving circuit are also connected to the GPS antenna 213 through the spring plate 214.

The fourth receiving circuit may include a GPS matching network and filtering network 215, an amplifier 216, and may be configured to receive GPS signals (which may also be referred to as third signals). The fifth receiving circuit may include a high-resistance filter 217 and an amplifier 218, and may be used to receive FM signals. The signal output by the amplifier 218, the signal output by the amplifier 211 and the signal output by the amplifier 205 are superimposed and then input to the FM post-processing and audio output module 212 for processing. The FM post-processing and audio playback module 212 may play the first audio that the user can hear based on the processed electrical signal, so that the electronic device 100 implements the FM radio function. The FM post-processing and audio playback module 212 may be described with reference to the embodiments shown in fig. 1A and 2A, and will not be described herein.

The high-resistance filter 217 may be described with reference to the high-resistance filter 204, the amplifier 218 may be described with reference to the amplifier 205, and the connection manner and function of other components may be described with reference to the embodiment of fig. 2A, which is not repeated here.

In this embodiment of the present application, the frequency band of the first signal and the frequency band of the second signal are different, and the frequency band of the third signal is different from the frequency band of the first signal and the frequency band of the second signal. When the first signal is an FM signal, it is indicated that the frequency band of the first signal is a frequency modulated FM signal.

Based on the kind of the multiplexed second antenna, the frequency band of the corresponding second signal may include: the frequency band of the global system for mobile communications GSM signal, the frequency band of the 5G signal, the frequency band of the Wi-Fi signal or the frequency band of the global positioning system GPS signal.

Based on the kind of the multiplexed third antenna, the frequency band of the third signal may include: the frequency band of the GSM signal, the frequency band of the 5G signal, the frequency band of the Wi-Fi signal or the frequency band of the GPS signal.

The signal output by the amplifier 205 described in the embodiment of the present application, that is, the output signal of the first receiving circuit; the signal output by the amplifier 211, that is, the output signal of the third receiving circuit; the signal output by the amplifier 218, i.e., the output signal of the fifth receiving circuit.

Fig. 3A to 3C exemplarily show a structure in which the electronic apparatus 100 receives FM signals through 2 antennas and a camera metal garnish. In a specific implementation, the electronic device may also receive FM signals through more than 2 (e.g., 3, 4, etc.) antennas and camera metallic trim, which is not limited in this application.

In the embodiment of the present application, the electronic device 100 may be a mobile phone, a tablet computer, a PC, a super mobile personal computer (ultra-mobile personal computer, UMPC), a netbook, a personal digital assistant (personaldigital assistant, PDA), or the like. The specific type of the electronic device 100 is not subject to any limitation in this application. The structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic apparatus 100. In other embodiments of the present application, electronic device 100 may also include more or fewer components than shown in fig. 2A, 2D, 3A, 3B, and 3C, or may combine certain components, or split certain components, or a different arrangement of components. The components shown in fig. 2A, 2D, 3A, 3B, and 3C may be implemented in hardware, software, or a combination of software and hardware.

As used in the above embodiments, the term "when …" may be interpreted to mean "if …" or "after …" or "in response to determination …" or "in response to detection …" depending on the context. Similarly, the phrase "at the time of determination …" or "if detected (a stated condition or event)" may be interpreted to mean "if determined …" or "in response to determination …" or "at the time of detection (a stated condition or event)" or "in response to detection (a stated condition or event)" depending on the context.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), etc.

Those of ordinary skill in the art will appreciate that implementing all or part of the above-described method embodiments may be accomplished by a computer program to instruct related hardware, the program may be stored in a computer readable storage medium, and the program may include the above-described method embodiments when executed. And the aforementioned storage medium includes: ROM or random access memory RAM, magnetic or optical disk, etc.

Claims

1. The electronic equipment is characterized by comprising a camera metal decorating part, a first antenna, a first receiving circuit, a second receiving circuit, a third receiving circuit and a signal processing module, wherein the first receiving circuit, the second receiving circuit, the third receiving circuit and the signal processing module are arranged on a main board, and the camera metal decorating part is connected with an elastic sheet on the main board through a metal extending part;

the input end of the first receiving circuit and the input end of the second receiving circuit are connected with the first antenna; the first receiving circuit is used for receiving a first signal, the second receiving circuit is used for receiving a second signal, and the frequency bands of the first signal and the second signal are different;

the third receiving circuit is also connected with the elastic sheet and is used for receiving the first signal;

and the output signals of the first receiving circuit and the third receiving circuit are input to the signal processing module after being overlapped, and the signal processing module is used for processing the overlapped output signals.

2. The electronic device of claim 1, wherein the first receiving circuit and the third receiving circuit are the same receiving circuit.

3. The electronic device according to claim 1 or 2, wherein the main board further comprises a first component, one end of the first component is grounded, the other end of the first component is also connected with the elastic sheet, and the first component is used for discharging static electricity distributed on the camera metal decoration to the ground.

4. The electronic device of claim 3, wherein the first means comprises: transient suppression diodes or resistors.

5. The electronic device according to any one of claims 1, 2 or 4, further comprising a second antenna, a fourth receiving circuit, and a fifth receiving circuit, wherein an input terminal of the fourth receiving circuit and an input terminal of the fifth receiving circuit are connected to the second antenna, the fourth receiving circuit is configured to receive a third signal, and the fifth receiving circuit is configured to receive a first signal, and a frequency band of the third signal is different from a frequency band of the first signal and a frequency band of the second signal;

and the output signals of the fifth receiving circuit and the output signals of the first receiving circuit and the third receiving circuit are input to the signal processing module after being overlapped.

6. The electronic device of claim 5, wherein the third receive circuit and the fifth receive circuit are the same receive circuit.

7. The electronic device of claim 1, wherein the frequency band of the first signal is a frequency band of a frequency modulated FM signal.

8. The electronic device of claim 7, wherein the signal processing module comprises an audio playback module configured to convert an electrical signal generated by superimposing output signals of the first receiving circuit and the third receiving circuit into a sound signal.

9. The electronic device of claim 1 or 7, wherein the frequency band of the second signal comprises: the frequency band of the global system for mobile communications GSM signal, the frequency band of the 5G signal, the frequency band of the Wi-Fi signal or the frequency band of the global positioning system GPS signal.

10. The electronic device of claim 5, wherein the frequency band of the third signal comprises: the frequency band of the GSM signal, the frequency band of the 5G signal, the frequency band of the Wi-Fi signal or the frequency band of the GPS signal.