CN112448727A - Electronic device and terminal device - Google Patents
Electronic device and terminal device Download PDFInfo
- Publication number
- CN112448727A CN112448727A CN201910818359.2A CN201910818359A CN112448727A CN 112448727 A CN112448727 A CN 112448727A CN 201910818359 A CN201910818359 A CN 201910818359A CN 112448727 A CN112448727 A CN 112448727A
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- radio frequency
- electronic device
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- antenna
- direct current
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
- H02J50/27—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves characterised by the type of receiving antennas, e.g. rectennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
Abstract
The application provides an electronic equipment and terminal equipment, wherein, electronic equipment includes: the receiving antenna array comprises a plurality of receiving antennas, and the receiving antennas are used for receiving radio frequency signals in the surrounding environment; the rectifying circuits are connected with the corresponding receiving antennas and used for converting the radio frequency signals into direct current signals; a power utilization module; and the power synthesis circuit is respectively connected with the power utilization module and the rectifying circuit, and is used for synthesizing the multi-path direct current signals, outputting the synthesized direct current signals to the power utilization module and supplying power to the power utilization module. The electronic equipment receives radio frequency signals through the receiving antenna array and converts radio frequency energy into direct current energy through the rectifying circuit so as to supply power to the power utilization module, thereby eliminating electromagnetic interference possibly generated by the radio frequency signals to the electronic equipment, supplying power to the electronic equipment through the received radio frequency energy, and realizing conversion and utilization of the radio frequency energy.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to an electronic device and a terminal device.
Background
With the development of wireless communication technology, people are more widely performing mobile communication or information transmission through wireless communication technology.
In the related art, electromagnetic waves such as radio frequency signals are transmitted to target electronic devices through facilities such as wireless communication base stations to realize wireless communication, and therefore, a large amount of radio frequency signals are filled in the surrounding space. However, these radio frequency signals may also generate electromagnetic interference to non-target electronic devices that do not need to receive these radio frequency signals while implementing mobile communication or information transmission functions, which affects the operation of the non-target electronic devices. Therefore, there is a need for a solution for eliminating electromagnetic interference generated by rf signals to non-target electronic devices
Content of application
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present application is to provide an electronic device, where the electronic device receives a radio frequency signal through a receiving antenna array and converts radio frequency energy into direct current energy through a rectifying circuit to supply power to a power utilization module, so as to eliminate electromagnetic interference that may be generated by the radio frequency signal to the electronic device, and supply power to the electronic device through the received radio frequency energy, so as to implement conversion and utilization of the radio frequency energy, improve the security of the electronic device, and save power resources.
A second objective of the present application is to provide a terminal device.
In order to achieve the above object, an embodiment of a first aspect of the present application provides an electronic device, including: the receiving antenna array comprises a plurality of receiving antennas, and the receiving antennas are used for receiving radio frequency signals in the surrounding environment; the rectifying circuits are connected with the corresponding receiving antennas and used for converting the radio frequency signals into direct current signals; a power utilization module; and the power synthesis circuit is respectively connected with the power utilization module and the rectifying circuit, and is used for synthesizing the multi-path direct current signals, outputting the synthesized direct current signals to the power utilization module and supplying power to the power utilization module.
The electronic equipment receives the radio frequency signals through the receiving antenna array, converts radio frequency energy into direct current energy through the rectifying circuit, and supplies power to the power utilization module, so that electromagnetic interference possibly generated by the radio frequency signals to the electronic equipment is eliminated, the electronic equipment is supplied with power through the received radio frequency energy, conversion and utilization of the radio frequency energy are achieved, safety of the electronic equipment is improved, and power resources are saved.
In addition, according to the electronic device of the above embodiment of the present application, the following additional technical features may also be provided:
in one embodiment of the present application, the electronic device further includes: and the power synthesis circuit is connected with the power utilization module through the filter circuit, and the filter circuit is used for filtering the synthesized direct current signal.
In one embodiment of the present application, the electronic device further includes: and the rectifying circuit is connected with the corresponding receiving antenna through the matching circuit.
In one embodiment of the present application, the electronic device further includes: the rectification circuit is connected with the corresponding receiving antenna through the phase shifters, and the phase shifters are used for performing phase shift processing on the radio frequency signals.
In one embodiment of the present application, the receiving antenna includes any one of the following antennas: the antenna comprises a magnetoelectric dipole broadband antenna, a high-gain broadband dipole antenna, a conical slot antenna and a slot antenna.
In one embodiment of the present application, the receiving antenna is a broadband circularly polarized antenna.
In one embodiment of the application, the electronic device comprises any one of the following devices: the system comprises a near field communication antenna, a sensor, a positioning device and an early warning device.
In order to achieve the above object, a second aspect of the present application provides a terminal device, which includes the electronic device according to any one of the above embodiments.
According to the terminal equipment, electromagnetic interference possibly generated by radio frequency signals to the terminal equipment is eliminated through the electronic equipment, the terminal equipment is powered through received radio frequency energy, conversion and utilization of the radio frequency energy are achieved, accordingly, the safety of the terminal equipment is improved, and power resources are saved
In addition, according to the terminal device of the above embodiment of the present application, the following additional technical features may also be provided:
in an embodiment of the present application, the terminal device includes any one of the following devices: mobile terminal, thing networking device and intelligent house.
In one embodiment of the present application, an electronic device is disposed on a battery cover on a back side of the mobile terminal.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a specific electronic device according to an embodiment of the present disclosure; and
fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The embodiments of the application are mainly used for solving the technical problems that in the related art, a large number of radio frequency signals filled in a space may generate electromagnetic interference on electronic equipment which does not need to receive the radio frequency signals, the operation of the electronic equipment is influenced, and the process of supplying power to low-power-consumption equipment is complicated and the cost is high.
In order to solve the above problems, the present application provides an electronic device and a terminal device, where a receiving antenna array receives a radio frequency signal and converts radio frequency energy into direct current energy through a rectifying circuit to supply power to a power consumption module, so as to eliminate electromagnetic interference that may be generated by the radio frequency signal to the electronic device, and supply power to the electronic device through the received radio frequency energy, thereby implementing conversion and utilization of the radio frequency energy, improving the security of the electronic device and the terminal device, and saving power resources.
The electronic device and the terminal device of the embodiments of the present application are described in detail below with reference to the drawings.
The electronic device in the embodiment of the application can be any one of low-power-consumption devices such as a Near Field Communication (NFC) antenna, a sensor, a positioning device and an early warning device.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 1, the electronic device includes: the power consumption control circuit comprises a receiving antenna array 10, a plurality of rectifying circuits 20, a power utilization module 30 and a power synthesis circuit 40.
The receiving antenna array 10 includes a plurality of receiving antennas 11, each receiving antenna 11 is connected to a first end of a corresponding rectifying circuit 20, a second end of each rectifying circuit 20 is connected to a first end of a power combining circuit 40, and a second end of the power combining circuit 40 is connected to the power consumption module 30.
The receiving antenna array 10 may be formed by a plurality of receiving antennas 11 operating at the same frequency according to a certain arrangement order, where the receiving antennas 11 are configured to receive radio frequency signals existing in the surrounding environment. In an embodiment of the present application, the receiving antenna 11 may be any one of an ultra-wideband antenna, such as a magnetoelectric dipole bandwidth antenna, a high-gain bandwidth dipole antenna, a tapered slot antenna (Vivaldi antenna), a slot antenna, and the like, and therefore, the receiving antenna 11 of the embodiment of the present application has a larger working bandwidth compared with a common receiving antenna, so as to receive radio frequency signals in more frequency ranges, thereby expanding application scenarios of the electronic device of the present application. Further, after the receiving antennas 11 are arranged as the receiving antenna array 10, the receiving antenna array 10 has higher receiving power, and it can be understood that when the receiving power of the electronic device is increased, more radio frequency signals can be received in unit time, which is convenient for converting more radio frequency signals subsequently, thereby increasing the working efficiency of the electronic device and the magnitude of the converted direct current energy.
In an embodiment of the present application, the receiving antenna 11 may also be a wideband circularly polarized antenna, and it should be understood that, since the wideband circularly polarized antenna has a higher receiving gain and the limitation on the location of the antenna is reduced, the efficiency of the receiving antenna array 10 in receiving the radio frequency signal may be further improved.
Further, the receiving antenna 11 sends the received radio frequency signal to the corresponding rectifying circuits 20, and each rectifying circuit 20 converts the received radio frequency signal into a direct current signal, so that radio frequency energy is converted into direct current, and collection of the radio frequency energy is realized. As a possible implementation manner, the rectifying circuit 20 in the embodiment of the present application may include an impedance matching unit 21 and a rectifying diode 22, and after the impedance matching unit 21 performs impedance transformation on the radio frequency signal, the rectifying diode 22 performs signal conversion, where the rectifying diode 22 may operate in multiple frequency bands, so as to implement rectification on the multiband radio frequency signal, and improve the application range of the electronic device.
Furthermore, each of the rectifying circuits 20 sends the converted dc signal to the power combining circuit 40, the power combining circuit 40 combines the received multiple paths of dc signals, combines the multiple paths of dc signals into one path of dc signal with higher signal strength, outputs the combined dc signal to the power utilization module 30, and supplies power to the power utilization module 30 in the electronic device through the converted and combined dc power. Furthermore, it should be noted that, since the receiving end of the electronic device of the present application has higher receiving power, the magnitude of the synthesized dc energy is higher, and the electronic device can be applied to power different types of electronic devices.
For example, when the electronic device is a Near Field Communication (NFC) antenna, the power utilization module in the NFC antenna may be an antenna driving unit, so that the synthesized direct current is converted and output to the antenna driving unit to drive the operation of the NFC antenna; when the electronic equipment is a sensor in a wireless sensor network, the converted and synthesized direct current is output to a sensor driving module to drive the sensor to operate, so that the power battery of each sensor is prevented from being sequentially replaced in a large-scale area, and the convenience of supplying power to each sensor node is improved; when the electronic equipment is positioning equipment or early warning equipment, the converted and synthesized direct current is output to a power module of the positioning equipment or the early warning equipment so as to drive the positioning equipment or the early warning equipment to operate and realize GPS positioning or triggering type alarming at different positions.
Therefore, the wireless charging receiving device of the embodiment of the invention receives the radio-frequency signal through the receiving antenna array, improves the receiving power of the radio-frequency signal, converts the radio-frequency signal into the direct-current signal through the rectifying circuit to supply power to the power utilization module, thereby utilizing the radio-frequency energy in the surrounding environment, avoiding the power supply of the electronic equipment through the traditional battery power supply mode and the like, reducing the step of supplying power to the electronic equipment and reducing the cost of supplying power to the electronic equipment.
To sum up, the electronic device according to the embodiment of the present application receives the radio frequency signal through the receiving antenna array and converts the radio frequency energy into the direct current energy through the rectifying circuit to supply power to the power consumption module, thereby eliminating the electromagnetic interference that the radio frequency signal may generate to the electronic device, and supplying power to the electronic device through the received radio frequency energy, thereby realizing the conversion and utilization of the radio frequency energy, improving the safety of the electronic device, and saving the power resource.
Based on the foregoing embodiments, in order to further improve the energy conversion effect of the radio frequency signal, an embodiment of the present application further provides a specific electronic device, and fig. 2 is a schematic structural diagram of the specific electronic device provided in the embodiment of the present application.
As shown in fig. 2, the electronic device further includes, on the basis of fig. 1: a plurality of matching circuits 50, a plurality of phase shifters 60, and a filter circuit 70.
A first end of each matching circuit 50 is connected to the corresponding receiving antenna 11, a second end of each matching circuit 50 is connected to a first end of the corresponding phase shifter 60, a second end of each phase shifter 60 is connected to the corresponding rectifying circuit 20, a first end of the filter circuit 70 is connected to a second end of the power combining circuit 40, and a second end of the filter circuit 70 is connected to the battery.
The matching circuit 50 is configured to match an operating broadband of the receiving antenna 11, so that the receiving antenna 11 can transmit the received radio frequency signal in an operating state of maximum power transmission, thereby increasing the speed of energy conversion of the electronic device.
Further, the matching circuit 50 may also send the radio frequency signal received by the receiving antenna 11 to the corresponding phase shifter 60. Specifically, when radio frequency signals with preset directions or high directivity need to be received, the receiving antenna 11 in the embodiment of the present application may be a phased array antenna, and then the phase shifter 60 performs phase adjustment on the radio frequency signals received by the phased array antenna, so that the phase of the radio frequency signals is restored to the initial phase, and the radio frequency signals are conveniently rectified in the subsequent process.
Furthermore, the signal rectified by the rectifying circuit 20 is synthesized by the power synthesizing circuit 40 and then transmitted to the filter circuit 70, and the filter circuit 70 filters the received synthesized signal, thereby further filtering out harmonic signals possibly existing after rectification, and ensuring that the power module 30 is charged by direct current only through direct current signals.
It should be noted that the structure of the electronic device according to the embodiment of the present application may be adjusted according to the needs of practical applications, for example, when a phased array antenna is not used as the receiving antenna 11, the phase shifter 60 may not be provided, that is, the rectifying circuit 20 is connected to the corresponding receiving antenna 11 through the matching circuit 50, or for example, when the transmission speed meets the requirement, the matching circuit 50 may not be provided for cost saving, that is, the rectifying circuit 20 is connected to the corresponding receiving antenna 11 through the phase shifter 60, and the connection relationship and the function of other components of the electronic device after being adjusted in the above example are not changed.
To sum up, the wireless charging receiving device of the embodiment of the application realizes the maximum power transmission of the receiving antenna through the matching circuit, and reduces the influence of harmonic signals on the power supply of the power utilization module in the charging process through the filter circuit, thereby further improving the charging speed and efficiency of wireless charging and ensuring the safety of the power supply of the power utilization module through the converted direct current energy.
In order to implement the foregoing embodiments, the present application further proposes a terminal device, as shown in fig. 3, where the terminal device 1000 includes the electronic device 2000 according to the foregoing embodiments.
Specifically, in an embodiment of the present application, the terminal device 1000 may be one of a mobile terminal, an internet of things device (ioT), and a smart home device. The terminal device 1000 may convert the radio frequency energy into direct current in the manner in the above example to supply power to each power utilization module in the terminal device 1000, so as to avoid electromagnetic interference that may be generated by the radio frequency signal to the terminal device 1000, and supply power to the terminal device 1000 through the received radio frequency energy, thereby implementing conversion and utilization of the radio frequency energy, improving the security of the terminal device 1000, and saving power resources.
As an example, when the terminal device 1000 is a mobile terminal, the electronic device in the above embodiment may be disposed on a battery cover on the back of the mobile terminal and connected to the battery, and after converting radio frequency energy into direct current energy, the electronic device may output the direct current energy to the battery to charge the mobile terminal, thereby avoiding electromagnetic interference that may be generated by radio frequency signals to the mobile terminal, and implementing wireless charging of the mobile terminal.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. An electronic device, comprising:
a receive antenna array comprising a plurality of receive antennas for receiving radio frequency signals in a surrounding environment;
the rectifying circuits are connected with the corresponding receiving antennas and are used for converting the radio frequency signals into direct current signals;
a power utilization module;
and the power synthesis circuit is respectively connected with the power utilization module and the rectification circuit, and is used for synthesizing a plurality of paths of direct current signals, outputting the synthesized direct current signals to the power utilization module and supplying power to the power utilization module.
2. The electronic device of claim 1, further comprising:
and the power synthesis circuit is connected with the power utilization module through the filter circuit, and the filter circuit is used for filtering the synthesized direct current signal.
3. The electronic device of claim 1, further comprising:
and the rectifying circuit is connected with the corresponding receiving antenna through the matching circuit.
4. The electronic device of claim 1, further comprising:
the rectification circuit is connected with the corresponding receiving antenna through the phase shifters, and the phase shifters are used for performing phase shift processing on the radio frequency signals.
5. The electronic device of claim 1, wherein the receive antenna comprises any one of:
the antenna comprises a magnetoelectric dipole broadband antenna, a high-gain broadband dipole antenna, a conical slot antenna and a slot antenna.
6. The electronic device of claim 1, wherein the receive antenna is a broadband circularly polarized antenna.
7. The electronic device of claim 1, wherein the electronic device comprises any one of:
the system comprises a near field communication antenna, a sensor, a positioning device and an early warning device.
8. A terminal device, comprising: the electronic device of any one of claims 1-7.
9. The terminal device according to claim 8, wherein the terminal device comprises any one of the following devices:
mobile terminal, thing networking device and intelligent house.
10. The terminal device of claim 9, wherein the electronic device is disposed on a battery cover on a back side of the mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818359.2A CN112448727A (en) | 2019-08-30 | 2019-08-30 | Electronic device and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818359.2A CN112448727A (en) | 2019-08-30 | 2019-08-30 | Electronic device and terminal device |
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| Publication Number | Publication Date |
|---|---|
| CN112448727A true CN112448727A (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910818359.2A Pending CN112448727A (en) | 2019-08-30 | 2019-08-30 | Electronic device and terminal device |
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| CN (1) | CN112448727A (en) |
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| CN113133098A (en) * | 2021-04-13 | 2021-07-16 | Oppo广东移动通信有限公司 | Positioning circuit, positioning method and terminal |
| CN115133673A (en) * | 2022-09-01 | 2022-09-30 | 荣耀终端有限公司 | Radio frequency energy collector and electronic equipment |
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| WO2016071905A1 (en) * | 2014-11-05 | 2016-05-12 | W.P. Energy (S.B.) Ltd. | Frequency selective energy harvesting |
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| CN113133098A (en) * | 2021-04-13 | 2021-07-16 | Oppo广东移动通信有限公司 | Positioning circuit, positioning method and terminal |
| CN115133673A (en) * | 2022-09-01 | 2022-09-30 | 荣耀终端有限公司 | Radio frequency energy collector and electronic equipment |
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Application publication date: 20210305 |