CN111756399A - Radio frequency circuit and electronic equipment - Google Patents
Radio frequency circuit and electronic equipment Download PDFInfo
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- CN111756399A CN111756399A CN202010568374.9A CN202010568374A CN111756399A CN 111756399 A CN111756399 A CN 111756399A CN 202010568374 A CN202010568374 A CN 202010568374A CN 111756399 A CN111756399 A CN 111756399A
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
Abstract
The application discloses a radio frequency circuit and electronic equipment. The radio frequency circuit comprises a radio frequency transceiver, an ad hoc network communication chip, a first switch, a second switch, a power amplifier and an antenna; the first switch is used for gating a first transmission path or a second transmission path, the first transmission path comprises a radio frequency transceiver, a first switch, a power amplifier and an antenna, and the second transmission path comprises an ad hoc network communication chip, the first switch, the power amplifier and the antenna; the second switch is used for gating the first receiving path or the second receiving path, the first receiving path comprises an antenna, the second switch and a radio frequency transceiver, and the second receiving path comprises the antenna, the second switch and an ad hoc network communication chip. The radio frequency transceiver and the ad hoc network communication chip can share the power amplifier and the antenna, the power amplifier and the antenna do not need to be additionally arranged for the ad hoc network communication chip, the size of the radio frequency circuit can be reduced, the space occupied by the radio frequency circuit is smaller, and the manufacturing cost of the radio frequency circuit can be reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency circuit and an electronic device.
Background
In order to realize direct wireless network transmission (without a base station, a router and the like in the transmission process) between electronic equipment such as a mobile phone and the like, the electronic equipment is additionally provided with an ad hoc network communication module, and the addition of the ad hoc network communication module occupies a large space of the electronic equipment and greatly improves the manufacturing cost of the electronic equipment.
Disclosure of Invention
The embodiment of the application provides a radio frequency circuit and electronic equipment.
The radio frequency circuit comprises a radio frequency transceiver, an ad hoc network communication chip, a first switch, a second switch, a power amplifier and an antenna; the first switch is used for gating a first transmission path or a second transmission path, wherein the first transmission path comprises the radio frequency transceiver, the first switch, the power amplifier and the antenna, and the second transmission path comprises the ad hoc network communication chip, the first switch, the power amplifier and the antenna; the second switch is used for gating a first receiving path or a second receiving path, wherein the first receiving path comprises the antenna, the second switch and the radio frequency transceiver, and the second receiving path comprises the antenna, the second switch and the ad hoc network communication chip.
The electronic equipment of the embodiment of the application comprises a shell and the radio frequency circuit, wherein the radio frequency circuit is arranged on the shell.
The radio frequency circuit and the radio frequency transceiver and the ad hoc network communication chip of the electronic device can share the power amplifier and the antenna, so that the power amplifier and the antenna do not need to be additionally arranged on the ad hoc network communication chip, the size of the radio frequency circuit can be reduced, the space occupied by the radio frequency circuit is smaller, and the manufacturing cost of the radio frequency circuit can be reduced.
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 above 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 diagram of the structure of the RF circuit of some embodiments of the present application;
FIG. 2 is a flow chart illustrating a method for controlling the RF circuit according to some embodiments of the present disclosure;
FIG. 3 is a schematic diagram of the structure of the RF circuit of some embodiments of the present application;
FIG. 4 is a schematic block diagram of an electronic device according to some embodiments 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 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 accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Referring to fig. 1, a radio frequency circuit 100 according to an embodiment of the present disclosure includes a radio frequency transceiver 10, an ad hoc network communication chip 20, a first switch 41, a second switch 43, a power amplifier 50, and an antenna 60; the first switch 41 is used to gate a first transmission path or a second transmission path, wherein the first transmission path includes the radio frequency transceiver 10, the first switch 41, the power amplifier 50 and the antenna 60, and the second transmission path includes the ad hoc network communication chip 20, the first switch 41, the power amplifier 50 and the antenna 60; the second switch 43 is used to gate a first receiving path or a second receiving path, wherein the first receiving path includes the antenna 60, the second switch 43 and the radio frequency transceiver 10, and the second receiving path includes the antenna 60, the second switch 43 and the ad hoc network communication chip 20.
In the radio frequency circuit 100 according to the embodiment of the present application, the radio frequency transceiver 10 and the ad hoc network communication chip 20 may share the power amplifier 50 and the antenna 60, so that the power amplifier 50 and the antenna 60 do not need to be additionally disposed for the ad hoc network communication chip 20, the size of the radio frequency circuit 100 can be reduced, the space occupied by the radio frequency circuit 100 is smaller, and the manufacturing cost of the radio frequency circuit 100 can be reduced.
The rf circuit 100 of the embodiment of the present application includes an rf transceiver 10, the rf transceiver 10 is connected to a first switch 41, the first switch 41 may be a Single Pole Double Throw (SPDT) switch, the SPDT switch includes a moving end and a stationary end, and the moving end of the SPDT switch may select two different ports. The first switch 41 is used for gating the first transmission path or the second transmission path, when the first switch 41 gates the first transmission path, the radio frequency transceiver 10 transmits a signal through the first transmission path, the signal passes through the power amplifier 50, the power amplifier 50 can perform power amplification on a low-power signal generated by the radio frequency transceiver 10, and after the signal is full of sufficient power, the signal is wirelessly transmitted through the antenna 60; when the first switch 41 gates the second transmission path, the ad hoc network communication chip 20 transmits the ad hoc network signal through the second transmission path, the signal passes through the power amplifier 50, the power amplifier 50 can amplify the power of the low-power signal generated by the ad hoc network communication chip 20, and after the signal is full of sufficient power, the signal is wirelessly transmitted through the antenna 60. The Ad _ Hoc TX may be used to represent a transmission signal of the Ad _ Hoc communication chip 20, and the Ad _ Hoc RX may be used to represent a reception signal of the Ad _ Hoc communication chip 20.
In some embodiments, the radio frequency transceiver 10 can transmit and receive 2G (second generation mobile communication technology), 3G (third generation mobile communication technology) and 4G (fourth generation mobile communication technology) signals. The rf transceiver 10 may be a fully integrated single-chip rf transceiver, which can achieve low power consumption and high performance in the rf circuit 100, and has the characteristics of low current consumption, high sensitivity, and the like. The radio frequency circuit 100 includes an ad hoc network communication chip 20, and the ad hoc network communication chip 20 may generate an ad hoc network signal. An ad hoc network is a network without network infrastructure, the ad hoc network may not have a fixed router, nodes in the ad hoc network may move freely and communicate with each other in any manner, and each node in the ad hoc network can implement the function of a router, thereby searching and maintaining a route to another node in the network. The ad hoc Network communication chip 20 may be a Low-Power Wide-Area Network (LPWAN) chip, a LoRa communication chip, a SigFox communication chip, a Weightless communication chip, and generally a narrowband communication chip, and operates in an unauthorized frequency band. For example: the ad hoc network communication chip 20 is a low power wide area network chip and the ad hoc network communication chip 20 may generate a low power wide area network. The ad hoc network communication chip 20 has the advantages of small volume, low power consumption, low cost and the like, the ad hoc network communication chip 20 can generate ad hoc network signals without erecting network facilities and can realize rapid communication, and the ad hoc network signals have the characteristics of survivability, mobility and the like.
The rf circuit 100 of the embodiment of the present application includes an antenna 60, the antenna 60 is connected to a second switch 43, the second switch 43 is used for gating the first receiving path or the second receiving path, and the second switch 43 may be a single-pole double-throw switch. When the second switch 43 gates the first receiving path, the signal is transmitted through the first receiving path, and the radio frequency transceiver 10 receives the signal; when the second switch 43 gates the second receiving path, the signal is transmitted through the second receiving path, and the ad hoc communication chip 20 receives the signal.
The rf circuit 100 of the embodiment of the present invention includes a processor 30, the processor 30 may be an Application Processor (AP), and the AP includes a modem function, which can convert a digital signal and an analog signal into each other to facilitate information transmission. The processor 30 is connected with the radio frequency transceiver 10 and the ad hoc network communication chip 20. The processor 30 may control the first switch 41 to gate the first transmission path and control the second switch 43 to gate the first reception path through the radio frequency transceiver 10, thereby implementing the wireless transmission function of the radio frequency transceiver 10; the processor 30 may also control the first switch 41 to gate the second transmitting path and control the second switch 43 to gate the second receiving path through the ad hoc network communication chip 20, thereby implementing the wireless transmission function of the ad hoc network communication chip 20.
Referring to fig. 2, the present application discloses a control method of a radio frequency circuit 100, in which the radio frequency circuit 100 includes a radio frequency transceiver 10, an ad hoc network communication chip 20, a first switch 41, a second switch 43, a power amplifier 50, and an antenna 60. The control method comprises the following steps:
01: determining a communication mode of the radio frequency circuit 100;
02: when the communication mode of the radio frequency circuit 100 is a radio frequency transceiver communication mode, controlling the first switch 41 to gate a first transmission path including the radio frequency transceiver 10, the first switch 41, the power amplifier 50 and the antenna 60 and controlling the second switch 43 to gate a first reception path including the antenna 60, the second switch 43 and the radio frequency transceiver 10;
03: when the communication mode of the radio frequency circuit 100 is the ad hoc network communication mode, the first switch 41 is controlled to gate a second transmission path including the ad hoc network communication chip 20, the first switch 41, the power amplifier 50 and the antenna 60, and the second switch 43 is controlled to gate a second reception path including the antenna 60, the second switch 43 and the ad hoc network communication chip 20.
In certain embodiments, step 01, step 02, and step 03 may all be implemented by the processor 30, that is, the processor 30 may be configured to: determining a communication mode of the radio frequency circuit 100; when the communication mode of the radio frequency circuit 100 is a radio frequency transceiver communication mode, controlling the first switch 41 to gate a first transmission path including the radio frequency transceiver 10, the first switch 41, the power amplifier 50 and the antenna 60 and controlling the second switch 43 to gate a first reception path including the antenna 60, the second switch 43 and the radio frequency transceiver 10; when the communication mode of the radio frequency circuit 100 is the ad hoc network communication mode, the first switch 41 is controlled to gate a second transmission path including the ad hoc network communication chip 20, the first switch 41, the power amplifier 50 and the antenna 60, and the second switch 43 is controlled to gate a second reception path including the antenna 60, the second switch 43 and the ad hoc network communication chip 20.
It is worth mentioning that the processor 30 may be referred to as a driver board. The driver board may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.
The radio frequency circuit 100 of the embodiment of the present application includes an Attenuator 70 (ATT) located between the ad hoc network communication chip 20 and the first switch 41, wherein the Attenuator 70 is used for attenuating a transmission signal of the ad hoc network communication chip 20. The attenuator may attenuate a signal transmitted from the ad hoc network communication chip 20, and may protect the power amplifier 50 outputting the signal.
The radio frequency circuit 100 of the embodiment of the present application includes a power amplifier 50, the power amplifier 50 is configured to amplify a 2G signal, the radio frequency circuit 100 further includes a low pass filter 82 connected to the power amplifier 50, and the low pass filter 82 is configured to filter a harmonic of an output signal of the power amplifier 50. The power amplifier 50 may be a linear power amplifier 50 or a switching power amplifier 50, the operating frequency of the linear power amplifier 50 is very high, and the linear power amplifier 50 may be classified into a class a linear power amplifier 50, a class b linear power amplifier 50, and a class c linear power amplifier 50 according to the conduction angle of the current. For example: the power amplifier 50 of the rf circuit 100 may select the class-c linear power amplifier 50, and the operation state and efficiency of the class-c power amplifier 50 are the highest of the three operation states. The switching power amplifier 50 can make the electronic device operate in a switching state, and the switching power amplifier 50 is classified into a class d switching power amplifier 50 and a class e switching power amplifier 50. For example: the power amplifier 50 of the radio frequency circuit 100 may be a class e switching power amplifier 50, and the class e switching power amplifier 50 may have no overlapping phenomenon of time domain waveforms of voltage and current during use, and has zero dc power consumption, and ideal efficiency can reach one hundred percent. The power amplifier 50 is a key device in the radio frequency circuit 100, and the power amplifier 50 determines the distance of the signal in wireless communication and the quality of the signal. The low pass filter 82 may be a butterworth filter or a chebyshev filter, and the low pass filter 82 may filter the harmonics of the output signal of the power amplifier 50 by filtering so that the signal normally passes through.
The Power Amplifier 50 of the embodiment of the present application includes a first frequency Band Power Amplifier 52 and a second frequency Band Power Amplifier 54, where the first frequency Band Power Amplifier 52 may be a Low frequency Band Power Amplifier (LB), the Low frequency Power Amplifier may be used in a GSM850/GSM900 frequency Band, the second frequency Band Power Amplifier 54 may be a High frequency Power Amplifier (HB), and the High frequency Power Amplifier may be used in a GSM1800/GSM1900 frequency Band. The rf circuit 100 further includes a first switch module 47, and the first switch module 47 is used for gating the first band power amplifier 52 or the second band power amplifier 54. When the first switch module 47 gates the first frequency band power amplifier 52, the GSM850/GSM900 frequency band signal can be wirelessly transmitted by the antenna 60 after being power-amplified by the first frequency band power amplifier 52; when the first switch module 47 gates the second band power amplifier 54, the GSM1800/GSM1900 band signals can be power-amplified by the second band power amplifier 54, and then wirelessly transmitted by the antenna 60. In an embodiment, the ad hoc network communication chip 20 may transmit a signal in the Sub-1GHz band, and the low frequency power amplifier may perform power amplification on the signal in the Sub-1GHz band, so that the ad hoc network communication chip 20 may select the low frequency power amplifier to perform power amplification on the signal, and the ad hoc network communication chip 20 and the radio frequency transceiver 10 share the low frequency power amplifier, so that the ad hoc network communication chip 20 does not need to be additionally provided with the power amplifier 50, the size of the radio frequency circuit 100 may be reduced, the space occupied by the radio frequency circuit 100 is smaller, and the manufacturing cost of the radio frequency circuit 100 may be reduced.
Taking fig. 1 as an example, the rf circuit 100 may be further configured to transmit and receive a 3G signal or a 4G signal, the rf transceiver 10 is connected to the Power Amplifier 50, the Power Amplifier 50 may be a Multi-Mode Multi-Frequency Power Amplifier (MMMB PA) 56, and the Multi-Mode Multi-Frequency Power Amplifier 56 is provided with a plurality of Frequency bands for amplifying the 3G signal or the 4G signal. The multi-mode multi-band power amplifier 56 is connected to the combiner 84, and the combiner 84 may combine the uplink and the downlink of the 3G signal or the 4G signal in the same frequency band into one path, so that the transmission and the reception of the 3G signal and the 4G signal share one antenna 60. The combiner 84 may be configured to gate the 3G signal or the 4G signal of a specific frequency band to pass through, and may filter out-of-band interference signals of the 3G signal or the 4G signal, where the combiner 84 itself has a function of a filter. The combiner 84 is connected to the first switch module 47, and the first switch module 47 may gate the multi-mode multi-band power amplifier 56. When the rf transceiver 10 is used to transmit 3G signals or 4G signals, the 3G signals or 4G signals generated by the rf transceiver 10 are power-amplified by the multi-mode multi-band power amplifier 56, the out-of-band interference signals of the 3G signals or 4G signals are filtered by the combiner 84, the multi-mode multi-band power amplifier 56 is gated by the first switch module 47, and then the wireless transmission is performed by the antenna 60. When the radio frequency circuit 100 is used for receiving a 3G signal or a 4G signal, the antenna 60 receives the 3G signal or the 4G signal, the first switch module 47 gates the multi-mode multi-band power amplifier 56, the combiner 84 filters out an out-of-band interference signal of the 3G signal or the 4G signal, and the ad hoc network communication chip 20 receives the 3G signal or the 4G signal. Of course, in other embodiments, the radio frequency circuit 100 may further include a circuit structure for transmitting and receiving 5G signals, and more antennas may be added to implement transmission of the 5G signals, which is not specifically limited herein.
The radio frequency circuit 100 of the embodiment of the present application includes an antenna 60, the antenna 60 includes a first antenna 62 and a second antenna 64, the first antenna 62 and the second antenna 64 may be a main antenna or a diversity antenna, when the first antenna 62 is in a poor transmission environment, the second antenna 64 may be used for transmission, and the plurality of antennas increase transmission sensitivity. The first antenna 62 and the second antenna 64 may be different antennas, such as: the first antenna 62 and the second antenna 64 have different transmission frequency bands or different transmission performance.
Referring to fig. 1, the rf circuit 100 further includes a third switch 45 connected to the first switch module 47, and the first antenna 62 is connected to the third switch 45; the third switch 45 may be a Double Pole Double Throw (DPDT) switch, and the second antenna 64 is connected to the third switch 45 through the second switch 43. A user may select the first antenna 62 or the second antenna 64 to transmit a signal, when the user selects the radio frequency transceiver 10 to transmit a signal, the first switch 41 is used to gate the first transmission path to transmit a signal, the first band power amplifier 52 or the second band power amplifier 54 performs power amplification on the signal generated by the radio frequency transceiver 10, the low pass filter 82 may filter a harmonic of the signal output by the first band power amplifier 52 or the second band power amplifier 54, so that the signal normally passes through, the first switch module 47 gates the first band power amplifier 52 or the second band power amplifier 54, the first switch module 47 is connected to the third switch 45, the third switch 45 may gate the first antenna 62 to transmit a signal, the third switch 45 may gate the second switch 43, and the second switch 43 gates the second antenna 64 to transmit a signal.
When a user selects the ad hoc network communication chip 20 to transmit a signal, the first switch 41 is used for gating the second transmission path to transmit the signal, the signal is attenuated by the attenuator 70, the signal is power-amplified by the first frequency band power amplifier 52, the signal passes through the low-pass filter 82, the low-pass filter 82 filters the harmonic of the signal output by the first frequency band power amplifier 52, so that the signal normally passes through, the first switch module 47 gates the first frequency band power amplifier 52 or the second frequency band power amplifier 54, the first switch module 47 is connected with the third switch 45, the third switch 45 can gate the first antenna 62 to transmit the signal, the third switch 45 can also gate the second switch 43, and the second switch 43 gates the second antenna 64 to transmit the signal. The ad hoc network communication chip 20 may transmit signals through the first antenna 62 or the second antenna 64, and multiple antenna transmissions may increase transmission sensitivity.
Referring to fig. 3, in some embodiments, the second antenna 64 may be directly connected to the third switch 45. The third switch 45 may be used to gate the first antenna 62 and the second antenna 64 when transmitting signals. The third switch 45 may gate the second antenna directly without passing through the second switch 43.
The radio frequency circuit 100 of the embodiment of the present application includes an antenna 60, the antenna 60 includes a first antenna 62 and a second antenna 64, the radio frequency circuit 100 further includes a third switch 45, the first antenna 62 is connected to the radio frequency transceiver 10 through the third switch 45, and the second antenna 64 is connected to the radio frequency transceiver 10 through the second switch 43 and the third switch 45. When the rf transceiver 10 receives a signal, the first antenna 62 or the second antenna 64 may be selected for reception, and when the first antenna 62 is selected for reception, the signal received by the first antenna 62 is transmitted to the rf transceiver 10 through the third switch 45; when the second antenna 64 is selected for reception and the second switch 43 gates the first reception path, the signal received by the second antenna 64 is transmitted to the rf transceiver 10 through the second switch 43 and the third switch 45. When the ad hoc network communication chip 20 receives the signal, the signal can be received by the second antenna 64, the second switch 43 gates the second receiving path, and the signal received by the second antenna 64 is transmitted to the ad hoc network communication chip 20 through the second switch 43. The circuit connection design for the ad hoc network communication chip 20 to receive only through the second antenna 64 is relatively simple and does not require antenna switching.
Referring again to fig. 3, in some embodiments, the rf circuit 100 of the present application includes an antenna 60, the antenna 60 includes a first antenna 62 and a second antenna 64, the rf circuit 100 further includes a third switch 45, the first antenna 62 is connected to the rf transceiver 10 through the third switch 45 and the second switch 43, and the second antenna 64 is connected to the rf transceiver 10 through the third switch 45 and the second switch 43. When the rf transceiver 10 receives a signal, the third switch 45 may gate the first antenna 62 or the second antenna 64 to receive the signal, the third switch 45 gates the second switch 43, the second switch 43 gates the first receiving path, and the rf transceiver 10 receives the signal. When receiving the signal from the networking communication chip 20, the third switch 45 may gate the first antenna 62 or the second antenna 64 to receive the signal, the third switch 45 gates the second switch 43, the second switch 43 gates the second receiving path, and the networking communication chip 20 receives the signal. The ad hoc network communication chip 20 can select the first antenna 62 or the second antenna 64 to receive signals, and the circuit connection design improves the capability of receiving signals, such as: in the case that the receiving environment of the first antenna 62 is poor, the second antenna 64 can be gated for receiving, and the sensitivity of signal receiving is increased.
The rf circuit 100 of the embodiment of the present application further includes a plurality of first bandpass filters 92 connected to the rf transceiver 10, the first bandpass filters 92 are configured to filter out an out-of-band interference signal of a received signal of the rf transceiver 10, the rf circuit 100 further includes a second switch module 49 connected to the plurality of first bandpass filters 92, and the second switch module 49 is configured to gate one of the plurality of first bandpass filters 92. The first band-pass filter 92 can allow signals in a specific frequency band to pass through, simultaneously shield other frequency bands, and attenuate frequency components in other frequency bands to an extremely low level, and the second switch module 49 can gate the corresponding first band-pass filter 92 according to different signal frequency bands.
The rf circuit 100 of the embodiment of the present application further includes a second band-pass filter 94 located between the ad hoc network communication chip 20 and the second switch 43, where the second band-pass filter 94 is configured to filter out-of-band interference signals of the received signal of the ad hoc network communication chip 20. The second band pass filter 94 may allow signals of a particular frequency band that the ad hoc network communication chip 20 is capable of receiving to pass through while shielding other frequency bands from out-of-band interference signals.
Referring to fig. 4, the present application discloses an electronic device 1000, where the electronic device 1000 includes a housing 200 and the radio frequency circuit 100 according to any of the above embodiments, the radio frequency circuit 100 is disposed on the housing 200, and the electronic device 1000 may include a mobile phone, a smart watch, an earphone, a computer, and the like.
In the description of embodiments of the present application, reference to the description of the terms "one embodiment," "certain embodiments," "illustrative embodiments," "example," "specific example," or "some examples" or the like 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 present application. In this specification, schematic representations of the above terms do not necessarily 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.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A radio frequency circuit, comprising a radio frequency transceiver, an ad hoc network communication chip, a first switch, a second switch, a power amplifier, and an antenna; the first switch is used for gating a first transmission path or a second transmission path, wherein the first transmission path comprises the radio frequency transceiver, the first switch, the power amplifier and the antenna, and the second transmission path comprises the ad hoc network communication chip, the first switch, the power amplifier and the antenna; the second switch is used for gating a first receiving path or a second receiving path, wherein the first receiving path comprises the antenna, the second switch and the radio frequency transceiver, and the second receiving path comprises the antenna, the second switch and the ad hoc network communication chip.
2. The radio frequency circuit of claim 1, further comprising an attenuator between the ad hoc network communication chip and the first switch, the attenuator configured to attenuate a transmission signal of the ad hoc network communication chip.
3. The RF circuit of claim 1, wherein the power amplifier is configured to amplify a 2G signal, and further comprising a low pass filter coupled to the power amplifier, the low pass filter configured to filter harmonics of an output signal of the power amplifier.
4. The RF circuit of claim 3, wherein the power amplifier comprises a first band power amplifier and a second band power amplifier, and further comprising a first switch module, the first switch module being configured to gate the first band power amplifier or the second band power amplifier.
5. The RF circuit of claim 4, wherein the antenna comprises a first antenna and a second antenna, the RF circuit further comprising a third switch coupled to the first switch module, the first antenna coupled to the third switch;
the second antenna is connected to the third switch through the second switch, or the second antenna is connected to the third switch.
6. The radio frequency circuit according to claim 1, wherein the antenna includes a first antenna and a second antenna, the radio frequency circuit further comprising a third switch, the first antenna being connected to the radio frequency transceiver through the third switch, the second antenna being connected to the radio frequency transceiver through the second switch and the third switch.
7. The radio frequency circuit according to claim 1, wherein the antenna includes a first antenna and a second antenna, the radio frequency circuit further comprising a third switch, the first antenna being connected to the radio frequency transceiver through the third switch and a second switch, the second antenna being connected to the radio frequency transceiver through the third switch and the second switch.
8. The RF circuit according to claim 6 or 7, further comprising a plurality of first band pass filters connected to the RF transceiver, the first band pass filters being configured to filter out an out-of-band interference signal of a received signal of the RF transceiver, and a second switch module connected to the plurality of first band pass filters, the second switch module being configured to gate one of the plurality of first band pass filters.
9. The radio frequency circuit according to claim 1, further comprising a second band pass filter between the ad hoc network communication chip and the second switch, the second band pass filter being configured to filter out-of-band interference signals of the received signal of the ad hoc network communication chip.
10. An electronic device, characterized in that the electronic device comprises a housing and a radio frequency circuit as claimed in any of claims 1-9, which radio frequency circuit is arranged on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010568374.9A CN111756399A (en) | 2020-06-19 | 2020-06-19 | Radio frequency circuit and electronic equipment |
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| CN202010568374.9A CN111756399A (en) | 2020-06-19 | 2020-06-19 | Radio frequency circuit and electronic equipment |
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| CN111756399A true CN111756399A (en) | 2020-10-09 |
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| CN112769447A (en) * | 2020-12-31 | 2021-05-07 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN113490102A (en) * | 2021-07-15 | 2021-10-08 | 恒玄科技(北京)有限公司 | Wireless earphone and communication method thereof |
| CN114389647A (en) * | 2022-01-21 | 2022-04-22 | 维沃移动通信有限公司 | Electronic device |
| CN115694544A (en) * | 2022-06-14 | 2023-02-03 | 荣耀终端有限公司 | Radio frequency front end module and method for controlling radio frequency front end module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112769447A (en) * | 2020-12-31 | 2021-05-07 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN113490102A (en) * | 2021-07-15 | 2021-10-08 | 恒玄科技(北京)有限公司 | Wireless earphone and communication method thereof |
| CN114389647A (en) * | 2022-01-21 | 2022-04-22 | 维沃移动通信有限公司 | Electronic device |
| CN114389647B (en) * | 2022-01-21 | 2023-11-24 | 维沃移动通信有限公司 | Electronic equipment |
| CN115694544A (en) * | 2022-06-14 | 2023-02-03 | 荣耀终端有限公司 | Radio frequency front end module and method for controlling radio frequency front end module |
| CN115694544B (en) * | 2022-06-14 | 2023-11-14 | 荣耀终端有限公司 | Radio frequency front end module and method for controlling radio frequency front end module |
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Application publication date: 20201009 |