CN211860095U - Radio frequency circuit and electronic equipment - Google Patents
Radio frequency circuit and electronic equipment Download PDFInfo
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- CN211860095U CN211860095U CN202020964759.2U CN202020964759U CN211860095U CN 211860095 U CN211860095 U CN 211860095U CN 202020964759 U CN202020964759 U CN 202020964759U CN 211860095 U CN211860095 U CN 211860095U
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Abstract
The embodiment of the application provides a radio frequency circuit and electronic equipment, radio frequency circuit includes: the antenna comprises a signal transceiver, a first switch, a second switch, a third switch, a first antenna, a second antenna, a third antenna and a fourth antenna. Wherein the signal transceiver comprises a transmitting port and a receiving port, and the first switch, the second switch and the third switch through switching on-state to make one of the first antenna, the second antenna, the third antenna and the fourth antenna switch on the transmitting port and make the first antenna, the second antenna, the third antenna and the fourth antenna switch on the receiving port simultaneously. The SRS round-cutting requirement of 1T4R is met, and the insertion loss of the double-pole double-throw switch is small, so that the insertion loss of a 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
With The rapid development of communication Technology, The 4th Generation mobile communication Technology (4G) has gradually become difficult to meet The user's requirements, especially The user's requirements for higher network speed and lower network delay. With this, The fifth Generation mobile communication Technology (The5th Generation Mobile communication Technology, 5G) has gradually emerged.
At present, in a partial frequency band of a 5GNR (5G New Radio, 5G New air interface), SRS (Sounding reference signal) round-robin requires to support 1T4R (1 transmitting antenna and 4 receiving antennas, T represents Transmit-transmission, and R represents round-rotation), and insertion loss in a related Radio frequency circuit design of the existing scheme is large, resulting in loss of load power of the Radio frequency circuit.
Disclosure of Invention
The embodiment of the application provides a radio frequency circuit and an electronic device, which can reduce the insertion loss of the radio frequency circuit.
An embodiment of the present application provides a radio frequency circuit, including:
a signal transceiver comprising a transmit port and a receive port;
a first switch electrically connected to the transmit port, the receive port, and a first antenna;
a second switch electrically connected to the first switch, the receiving port, and a second antenna;
a third switch electrically connected to the second switch, the receive port, a third antenna, and a fourth antenna; wherein
The first switch, the second switch, and the third switch on states to switch on the transmitting port for one of the first antenna, the second antenna, the third antenna, and the fourth antenna, and simultaneously switch on the receiving port for the first antenna, the second antenna, the third antenna, and the fourth antenna.
An embodiment of the present application further provides an electronic device, including:
a housing;
and the radio frequency circuit is arranged inside the shell and comprises the radio frequency circuit.
In the radio frequency circuit provided in the embodiment of the application, the switching on state of the first switch, the second switch and the third switch may be that one of the first antenna, the second antenna, the third antenna and the fourth antenna is connected to the transmission port, and the first antenna, the second antenna, the third antenna and the fourth antenna are simultaneously connected to the reception port, so that the SRS round-cutting requirement of 1T4R is met, and the insertion loss of the double-pole double-throw switch is small, so that the insertion loss of the radio frequency circuit can be reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a first structure of a radio frequency circuit according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram of a second structure of a radio frequency circuit according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a third structure of a radio frequency circuit according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a fourth structure of a radio frequency circuit according to an embodiment of the present application.
Fig. 6 is a fifth structural schematic diagram of a radio frequency circuit according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides electronic equipment. The electronic device may be a smart phone, a tablet computer, or other devices, and may also be a game device, an AR (Augmented Reality) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
The electronic device 100 includes a housing 1 and a radio frequency circuit 2, and the radio frequency circuit 2 is disposed inside the housing 1.
Referring to fig. 2 and fig. 3, fig. 2 is a first structural schematic diagram of the radio frequency circuit provided in the embodiment of the present application, and fig. 3 is a second structural schematic diagram of the radio frequency circuit provided in the embodiment of the present application.
The radio frequency circuit 2 comprises a signal transceiver 10, a first switch 20, a second switch 30, a third switch 40, a first antenna 50, a second antenna 60, a third antenna 70 and a fourth antenna 80. The signal receiver is electrically connected to the first switch 20, the second switch 30, and the third switch 40, the first switch 20 is electrically connected to the first antenna 50, the second switch 30 is electrically connected to the second antenna 60, and the third switch 40 is electrically connected to the third antenna 70 and the fourth antenna 80. Wherein, tx (transmit) refers to transmitting signals, prx (primary receive) refers to primary receiving, drx (diversity receive) refers to secondary receiving, and MIMO (Multi-input Multi-output, multiple-input multiple-output) refers to multiple-input multiple-output, so as to greatly improve channel capacity, multiple antennas are used at both the transmitting end and the receiving end, and an antenna system with multiple channels is formed between the transmitting end and the receiving end.
The signal transceiver 10 includes a transmitting port and a receiving port, and the signal transceiver 10 is used for receiving and transmitting signals.
A first switch 20 electrically connected to the transmitting port, the receiving port and the first antenna 50 for changing the state of the radio frequency circuit by switching the on state.
And a second switch 30 electrically connected to the first switch 20, the receiving port, and the second antenna 60, for changing a state of the radio frequency circuit by switching an on state.
And a third switch 40 electrically connected to the second switch 30, the receiving port, the third antenna 70, and the fourth antenna 80, for changing a state of the radio frequency circuit by switching an on state.
Wherein the first switch 20, the second switch 30 and the third switch 40 switch on states to enable one of the first antenna 50, the second antenna 60, the third antenna 70 and the fourth antenna 80 to switch on the transmitting port and enable the first antenna 50, the second antenna 60, the third antenna 70 and the fourth antenna 80 to switch on the receiving port simultaneously.
Further, the first switch 20 includes a first port 21, a second port 22, a third port 23 and a fourth port 24; the second switch 30 comprises a fifth port 31, a sixth port 32, a seventh port 33 and an eighth port 34; the third switch 40 includes a ninth port 41, a tenth port 42, an eleventh port 43, and a twelfth port 44.
Wherein the first port 21 is electrically connected with the transmitting port and the receiving port; the second port 22 is electrically connected to the receiving port; the third port 23 is electrically connected to the first antenna 50;
specifically, the radio frequency circuit 2 receives and transmits signals through the first antenna 50 as follows:
when the first port 21 is connected to the third port 23, the first antenna 50 is connected to the transmitting port through the first switch 20, and the transmitting signal TX is transmitted to the first antenna 50.
When the first port 21 connects the third port 23, the first antenna 50 connects the receiving port through the first switch 20, and then the receiving signal RX is transmitted from the first antenna 50 to the signal transceiver 10 to implement receiving of the PRX path.
When the second port 22 connects the third port 23, the first antenna 50 connects the receiving port through the first switch 20, and the receiving signal RX is received from the first antenna 50 to the signal transceiver 10 in the DPX path.
Wherein the fifth port 31 is electrically connected with the fourth port 24; the sixth port 32 is electrically connected to the receiving port; the seventh port 33 is electrically connected to the second antenna 60.
Specifically, the radio frequency circuit 2 receives and transmits signals through the second antenna 60 as follows:
when the first port 21 connects the fourth port 24 and the fifth port 31 connects the seventh port 33, the second antenna 60 connects the transmitting port through the first switch 20 and the second switch 30, and the transmitting signal TX is transmitted to the second antenna 60.
When the first port 21 connects the fourth port 24 and the fifth port 31 connects the seventh port 33, the second antenna 60 connects the receiving port through the first switch 20 and the second switch 30, and then the receiving signal RX is transmitted from the second antenna 60 to the signal transceiver 10 to implement PRX path reception.
When the second port 22 is connected to the fourth port 24, the fifth port 31 is connected to the seventh port 33, and the second antenna 60 is connected to the receiving port through the first switch 20 and the second switch 30, the receiving signal RX is transmitted from the second antenna 60 to the signal transceiver 10 to implement DRX reception.
When the sixth port 32 is connected to the seventh port 33, the second antenna 60 is connected to the receiving port through the second switch 30, and the receiving signal RX is transmitted from the second antenna 60 to the signal transceiver 10 to implement receiving of the PRX MIMO channel.
Wherein the ninth port 41 is electrically connected with the eighth port 34; the tenth port 42 is electrically connected to the receiving port; the eleventh port 43 is electrically connected to the third antenna 70; the twelfth port 44 is electrically connected to the fourth antenna 80.
Specifically, the radio frequency circuit 2 receives and transmits signals through the third antenna 70 as follows:
when the first port 21 and the fourth port 24, the fifth port 31 and the eighth port 34, and the ninth port 41 and the eleventh port 43 are simultaneously turned on, the third antenna 70 turns on the transmission port through the first switch 20, the second switch 30, and the third switch 40, and a transmission signal TX is transmitted to the third antenna 70.
When the first port 21 and the fourth port 24, the fifth port 31 and the eighth port 34, and the ninth port 41 and the eleventh port 43 are simultaneously turned on, the third antenna 70 turns on the receiving port through the first switch 20, the second switch 30, and the third switch 40, and then the receiving signal RX is transmitted from the third antenna 70 to the signal transceiver 10 to implement the receiving of the PRX path.
When the sixth port 32 is connected to the eighth port 34 and the ninth port 41 is connected to the eleventh 43 port, the third antenna 70 is connected to the receive port through the second switch 30 and the third switch 40, and the receive signal RX is transmitted from the third antenna 70 to the transceiver 10 for PRX MIMO reception.
When the tenth port 42 turns on the eleventh port 43, the third antenna 70 turns on the receiving port through the third switch 40, and the transceiver 10 transmits a signal from the third antenna 70 at this time to implement DRX MIMO reception.
Specifically, the radio frequency circuit 2 receives and transmits signals through the fourth antenna 80 as follows:
when the first port 21 and the fourth port 24, the fifth port 31 and the eighth port 34, and the ninth port 41 and the twelfth port 44 are simultaneously turned on, the fourth antenna 80 turns on the transmission port through the first switch 20, the second switch 30, and the third switch 40, and a transmission signal TX may be transmitted to the fourth antenna 80.
When the first port 21 and the fourth port 24, the fifth port 31 and the eighth port 34, and the ninth port 41 and the twelfth port 44 are simultaneously turned on, the fourth antenna 80 turns on the receiving port through the first switch 20, the second switch 30, and the third switch 40, and then the receiving signal RX is transmitted from the fourth antenna 80 to the signal transceiver 10 to implement the receiving of the PRX path.
When the tenth port 42 is connected to the twelfth port 44, the fourth antenna 80 is connected to the receiving port through the third switch 40, and the transceiver 10 transmits a signal RX from the fourth antenna 80 to implement DRX MIMO reception.
Further, referring to fig. 4, fig. 4 is a schematic diagram of a third structure of the radio frequency circuit according to the embodiment of the present application. The receiving ports of the signal transceiver 10 include a first receiving sub-port 12, a second receiving sub-port 13, a third receiving sub-port 14 and a fourth receiving sub-port 15.
Wherein the first switch 20 is electrically connected with the first receiving sub-port 12 and the second receiving sub-port 13; the second switch 30 is electrically connected to the third receiving sub-port 14; the third switch 40 is electrically connected to the fourth receiving sub-port 15.
Specifically, the first port 21 is electrically connected with the transmitting port 11 and the first receiving sub-port 12; the second port 22 is electrically connected with the second receiving subport 13; the sixth port is electrically connected with the third receiving sub-port; the tenth port 42 is electrically connected to the fourth receiving sub-port 15.
Specifically, the first antenna 50 is switched on to the transmission port and the reception port in the following manner:
when the first port 21 connects the third port 23, the first antenna 50 connects the transmitting port 11 and the first receiving sub-port 12 through the first switch 20.
When the second port 22 connects the third port 23, the first antenna 50 connects the second receiving sub-port 13 through the first switch 20.
Specifically, the second antenna 60 is switched to the transmission port and the reception port as follows:
when the first port 21 turns on the fourth port 24 and the fifth port 31 turns on the seventh port 33, the second antenna 60 turns on the transmission port 11 and the first reception sub-port 12 through the first switch 20 and the second switch 30.
When the second port 22 connects the fourth port 24 and the fifth port 31 connects the seventh port 33, the second antenna 60 connects the second receiving sub-port 13 through the first switch 20 and the second switch 20.
When the sixth port 32 switches on the seventh port 33, the second antenna 60 switches on the third receiving sub-port 14 through the second switch 30.
Specifically, the third antenna 70 is connected to the transmitting port and the receiving port in the following manner:
when the first port 21 and the fourth port 24, the fifth port 31 and the eighth port 34, and the ninth port 41 and the eleventh port 43 are simultaneously turned on, the third antenna 70 turns on the transmission port 11 and the first reception sub-port 12 through the first switch 20, the second switch 30, and the third switch 40.
When the sixth port 32 is connected to the eighth port 34 and the ninth port 41 is connected to the eleventh port 43, the third antenna 70 is connected to the fourth sub-port 15 through the second switch 30 and the third switch 40.
When the tenth port 42 turns on the eleventh port 43, the third antenna 70 turns on the fourth receiving sub-port 15 through the third switch 40.
Specifically, the fourth antenna 80 is connected to the transmitting port and the receiving port in the following manner:
when the first port 21 and the fourth port 24, the fifth port 31 and the eighth port 34, and the ninth port 41 and the twelfth port 44 are simultaneously turned on, the fourth antenna 80 turns on the transmission port 11 and the first reception sub-port 12 through the first switch 20, the second switch 30, and the third switch 40.
When the tenth port 42 turns on the twelfth port 44, the fourth antenna 80 turns on the fourth receiving sub-port 15 through the third switch 40.
In an embodiment, referring to fig. 5, fig. 5 is a schematic diagram of a fourth structure of the rf circuit according to the embodiment of the present disclosure. The radio frequency circuit may further include a low noise amplifier, a duplexer, and a power amplifier.
Wherein a first low noise amplifier 90 is disposed between the first switch 20 and the first receiving sub-port 12 and the transmitting port, and a second low noise amplifier 91 is disposed between the first switch 20 and the second receiving sub-port 13; a third low noise amplifier 92 is arranged between the second switch 30 and the third receiving sub-port 14; a fourth low noise amplifier 93 is disposed between the third switch 40 and the fourth receiving sub-port 15. Wherein a low noise amplifier is provided for amplifying the signal.
The transmitting port 11 and the first receiving sub-port 12 are electrically connected to the duplexer 95 through the power amplifier 94. The duplexer is used for isolating the transmission signal and the reception signal.
The power amplifier 94, the transmission port 11 and the first receiving sub-port 12 are disposed between the duplexer 95 and the power amplifier 94. The power amplifier 94 is used to boost the radio frequency power.
In an embodiment, referring to fig. 6, fig. 6 is a schematic diagram of a fifth structure of a radio frequency circuit provided in the embodiment of the present application. The radio frequency circuit further includes: a first modem 101 is arranged between the first switch 20 and the transmitting port 11; a second modem 102 is arranged between the first switch 20 and the first receiving sub-port 12; a third modem 103 is arranged between the first switch 20 and the second receiving sub-port 12; a fourth modem 104 is arranged between the second switch 30 and the third receiving sub-port 14; a fifth modem 105 is arranged between the third switch 40 and the fourth receiving sub-port 15. The modem is used for carrying out modulation and demodulation processing on the radio frequency signal.
The embodiment of the application provides a radio frequency circuit and electronic equipment, radio frequency circuit includes: a signal transceiver comprising a transmit port and a receive port; a first switch electrically connected to the transmit port, the receive port, and a first antenna; a second switch electrically connected to the first switch, the receiving port, and a second antenna; a third switch electrically connected to the second switch, the receive port, a third antenna, and a fourth antenna; wherein the first switch, the second switch, and the third switch on the transmitting port by switching on states of the first switch, the second switch, and the third switch, and simultaneously switch on the receiving port by switching on states of the first switch, the second switch, and the third switch. The radio frequency circuit provided by the embodiment of the application carries out the combination switch switching by using three double-pole double-throw switches, TX radio frequency signals can be transmitted to any one of 4 antenna ends, four receiving paths can be ensured, the SRS round cutting of 1T4R is realized, and the insertion loss of the double-pole double-throw switches is small, so that the insertion loss of the radio frequency circuit can be reduced.
In the description of the present application, it is to be understood that terms such as "first", "second", and the like are used merely to distinguish one similar element from another, and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated.
The radio frequency circuit and the electronic device provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A radio frequency circuit, comprising:
a signal transceiver comprising a transmit port and a receive port;
a first switch electrically connected to the transmit port, the receive port, and a first antenna;
a second switch electrically connected to the first switch, the receiving port, and a second antenna;
a third switch electrically connected to the second switch, the receive port, a third antenna, and a fourth antenna; wherein
The first switch, the second switch, and the third switch on states to switch on the transmitting port for one of the first antenna, the second antenna, the third antenna, and the fourth antenna, and simultaneously switch on the receiving port for the first antenna, the second antenna, the third antenna, and the fourth antenna.
2. The radio frequency circuit of claim 1, wherein:
the first switch comprises a first port, a second port and a third port;
the first port is electrically connected with the transmitting port and the receiving port;
the second port is electrically connected with the receiving port;
the third port is electrically connected with the first antenna;
when the first port is communicated with the third port, the first antenna is communicated with the transmitting port and the receiving port through the first switch;
when the second port is connected with the third port, the first antenna is connected with the receiving port through the first switch.
3. The radio frequency circuit of claim 2, wherein:
the first switch further comprises a fourth port;
the second switch comprises a fifth port, a sixth port and a seventh port;
the fifth port is electrically connected with the fourth port;
the sixth port is electrically connected with the receiving port;
the seventh port is electrically connected with the second antenna;
when the first port is connected with the fourth port and the fifth port is connected with the seventh port, the second antenna is connected with the transmitting port and the receiving port through the first switch and the second switch;
when the second port is connected with the fourth port and the fifth port is connected with the seventh port, the second antenna is connected with the receiving port through the first switch and the second switch;
when the sixth port is connected to the seventh port, the second antenna is connected to the reception port through the second switch.
4. The radio frequency circuit of claim 3, wherein:
the second switch further comprises an eighth port;
the third switch comprises a ninth port, a tenth port, an eleventh port, and a twelfth port;
the ninth port is electrically connected with the eighth port;
the tenth port is electrically connected with the receiving port;
the eleventh port is electrically connected to the third antenna;
the twelfth port is electrically connected with the fourth antenna;
when the first port and the fourth port, the fifth port and the eighth port, and the ninth port and the eleventh port are simultaneously turned on, the third antenna turns on the transmission port and the reception port through the first switch, the second switch, and the third switch;
when the sixth port is connected with the eighth port and the ninth port is connected with the eleventh port, the third antenna is connected with the receiving port through the second switch and the third switch;
when the tenth port turns on the eleventh port, the third antenna turns on the reception port through the third switch;
when the first port and the fourth port, the fifth port and the eighth port, and the ninth port and the twelfth port are simultaneously turned on, the fourth antenna turns on the transmission port and the reception port through the first switch, the second switch, and the third switch;
when the tenth port turns on the twelfth port, the fourth antenna turns on the reception port through the third switch.
5. The radio frequency circuit according to any one of claims 1 to 4, wherein:
the receiving ports comprise a first receiving sub-port, a second receiving sub-port, a third receiving sub-port and a fourth receiving sub-port;
the first switch is electrically connected with the first receiving sub-port and the second receiving sub-port;
the second switch is electrically connected with the third receiving sub-port;
the third switch is electrically connected with the fourth receiving sub-port.
6. The radio frequency circuit of claim 5, further comprising:
a first low noise amplifier is arranged between the first switch and the first receiving sub-port and the transmitting port,
a second low noise amplifier is arranged between the first switch and the second receiving sub-port;
a third low noise amplifier is arranged between the second switch and the third receiving sub-port;
a fourth low noise amplifier is disposed between the third switch and the fourth receive sub-port.
7. The radio frequency circuit of claim 5, further comprising:
the transmitting port and the first receiving sub-port are electrically connected with the first switch through the duplexer.
8. The radio frequency circuit of claim 7, further comprising:
the transmitting port and the first receiving sub-port are electrically connected with the duplexer through the power amplifier.
9. The radio frequency circuit of claim 5, further comprising:
a first modem is arranged between the first switch and the transmitting port;
a second modem is arranged between the first switch and the first receiving sub-port;
a third modem is arranged between the first switch and the second receiving sub-port;
a fourth modem is arranged between the second switch and the third receiving sub-port;
a fifth modem is disposed between the third switch and the fourth receive sub-port.
10. An electronic device, comprising:
a housing;
a radio frequency circuit disposed inside the housing, the radio frequency circuit being as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020964759.2U CN211860095U (en) | 2020-05-29 | 2020-05-29 | Radio frequency circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020964759.2U CN211860095U (en) | 2020-05-29 | 2020-05-29 | Radio frequency circuit and electronic equipment |
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| CN211860095U true CN211860095U (en) | 2020-11-03 |
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| CN202020964759.2U Active CN211860095U (en) | 2020-05-29 | 2020-05-29 | Radio frequency circuit and electronic equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398491A (en) * | 2020-11-17 | 2021-02-23 | 维沃移动通信有限公司 | Electronic device |
| CN112436862A (en) * | 2020-11-24 | 2021-03-02 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN112615631A (en) * | 2020-12-18 | 2021-04-06 | 维沃移动通信有限公司 | Radio frequency receiving circuit, radio frequency signal receiving method, radio frequency signal receiving device and electronic equipment |
| CN112688715A (en) * | 2020-12-21 | 2021-04-20 | 维沃移动通信有限公司 | Antenna circuit and electronic device |
| CN115208416A (en) * | 2021-04-13 | 2022-10-18 | Oppo广东移动通信有限公司 | Radio frequency system and communication device |
-
2020
- 2020-05-29 CN CN202020964759.2U patent/CN211860095U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398491A (en) * | 2020-11-17 | 2021-02-23 | 维沃移动通信有限公司 | Electronic device |
| CN112436862A (en) * | 2020-11-24 | 2021-03-02 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN112436862B (en) * | 2020-11-24 | 2022-08-02 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN112615631A (en) * | 2020-12-18 | 2021-04-06 | 维沃移动通信有限公司 | Radio frequency receiving circuit, radio frequency signal receiving method, radio frequency signal receiving device and electronic equipment |
| CN112688715A (en) * | 2020-12-21 | 2021-04-20 | 维沃移动通信有限公司 | Antenna circuit and electronic device |
| CN112688715B (en) * | 2020-12-21 | 2022-08-02 | 维沃移动通信有限公司 | Antenna circuit and electronic device |
| CN115208416A (en) * | 2021-04-13 | 2022-10-18 | Oppo广东移动通信有限公司 | Radio frequency system and communication device |
| CN115208416B (en) * | 2021-04-13 | 2023-12-05 | Oppo广东移动通信有限公司 | Radio frequency system and communication device |
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