CN111245468B

CN111245468B - Radio frequency circuit and electronic device

Info

Publication number: CN111245468B
Application number: CN202010062182.0A
Authority: CN
Inventors: 陈宪龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2021-10-22
Anticipated expiration: 2040-01-17
Also published as: CN111245468A; WO2021143877A1

Abstract

The present application relates to a radio frequency circuit and an electronic device, the radio frequency circuit including a radio frequency transceiver, a first transceiver, a second transceiver, a first filter, a second filter, a switch circuit, a first antenna, and a second antenna. The change-over switch circuit is used for sending a first signal transmitted by the radio frequency transceiver to external equipment to an antenna corresponding to the output switch according to the input circuit, and sending a second signal acquired from the input switch to the radio frequency transceiver according to the output circuit. The input circuit and the output switch are determined according to the frequency of the first signal and a network mode corresponding to the radio frequency circuit, and the output circuit and the input switch are determined according to the frequency of the second signal, the network mode and a receiving mode of the radio frequency circuit. By the aid of the method and the device, flexibility of signal transmission can be improved.

Description

Radio frequency circuit and electronic device

Technical Field

The present application relates to the field of electronic circuit technology, and in particular, to a radio frequency circuit and an electronic device.

Background

With the rapid development of communication technologies, electronic devices (e.g., mobile phones, etc.) support a Non-Standalone Networking (NSA) mode of the 5th generation mobile communication technology (5G), and support both Long Term Evolution (LTE) of the 4th generation mobile communication technology (4G) and wireless air interface (New Radio, NR) of the 5G.

In the prior art, the radio frequency circuit in NSA mode needs to support LTE and NR radio frequency transceivers, and the LTE and NR radio frequency transceivers need two antennas, so 4 antennas are needed. However, the size of the Low frequency (LB) antenna is too large, which is difficult for the antenna layout of Low frequency signals.

Disclosure of Invention

The embodiment of the application provides a radio frequency circuit and an electronic device, which can improve the flexibility of signal transmission.

In a first aspect, embodiments of the present application provide a radio frequency circuit, which includes a radio frequency transceiver, a first transceiver and a second transceiver connected to the radio frequency transceiver, a first filter and a switch circuit connected to the first transceiver and the second transceiver, a second filter connected to the first transceiver, and a first antenna and a second antenna connected to the switch circuit; wherein the first circuit comprises the first transceiver, the first filter, and the second transceiver; the second circuit comprises the second transceiver; a third circuit comprises the second transceiver and the first filter; a fourth circuit comprises the first transceiver; a fifth circuit comprises the first transceiver and the second filter;

the changeover switch circuit is used for determining an input circuit from the first circuit, the second circuit and the third circuit according to the frequency of a first signal transmitted to an external device by the radio frequency transceiver and a network mode corresponding to the radio frequency circuit, and determining an output switch corresponding to the first antenna or the second antenna; sending the first signal to an antenna corresponding to the output switch according to the input circuit;

the switch circuit is further configured to determine an input switch corresponding to the first antenna or the second antenna according to a frequency of a second signal received by the first antenna or the second antenna from an external device, the network mode, and a reception mode corresponding to the radio frequency circuit, and determine an output circuit from the second circuit, the third circuit, the fourth circuit, and the fifth circuit; and sending the second signal acquired from the input switch to the radio frequency transceiver according to the output circuit.

In a second aspect, an embodiment of the present application provides an electronic device including the radio frequency circuit described in the first aspect of the embodiment of the present application.

By adopting the radio frequency circuit, the radio frequency circuit comprises three input circuits (a first circuit, a second circuit and a third circuit), four output circuits (a second circuit, a third circuit, a fourth circuit and a fifth circuit) and two antennas (a first antenna and a second antenna), the condition that one antenna corresponds to one input circuit or one output circuit is avoided, and the layout of the antennas is reduced. And aiming at signals with different network modes and different frequency bands, signals transmitted by the radio frequency transceiver to external equipment are transmitted to the antenna through the three input circuits. And then aiming at signals in different network modes, different receiving modes and different frequency bands, the signals received by the antenna from the external equipment are transmitted to the radio frequency transceiver through the three output circuits, so that the flexibility of signal transmission is improved.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a first radio frequency circuit provided in the present application;

fig. 2 is a schematic structural diagram of a second rf circuit provided in the present application;

FIG. 3 is a schematic diagram of a third RF circuit provided in the present application;

fig. 4 is a schematic structural diagram of a quadruplex device provided by the present application.

Detailed Description

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The electronic devices involved in the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, as well as various forms of User Equipment (UE), Mobile Stations (MS), terminal equipment (terminal device), and so on. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.

The electronic device to which the present application relates may support LTE mode, i.e. the electronic device only operates a 4G network. The electronic device also supports an NSA mode, i.e. the electronic device can run both a 4G network and a 5G network. The frequency band of the signal of the 4G network is described as B, for example, B8, B20, B28, etc. The frequency band of the signals of the 5G network is described by N, e.g., N2, N8, N28, etc. It should be noted that the sequence number corresponding to the frequency band is irrelevant to the network, that is, the frequency bands corresponding to B8 and N8 are the same, the uplink frequency is 880MHz-915MHz, and the downlink frequency is 925MHz-960 MHz.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a radio frequency circuit according to the present application. As shown in fig. 1, the radio frequency circuit includes a radio frequency transceiver 11, a first transceiver 12 and a second transceiver 13 connected to the radio frequency transceiver 11, a first filter 14 and a switch circuit 17 connected to the first transceiver 12 and the second transceiver 13, a second filter 16 connected to the first transceiver 12, and a first antenna 18 and a second antenna 19 connected to the switch circuit 17.

Wherein the radio frequency transceiver 11 is used for transmitting a first signal to an external device. The first antenna 18 or the second antenna 19 is used for receiving the first signal and transmitting the first signal to the corresponding external device. The first antenna 18 or the second antenna 19 is also used for transmitting a second signal transmitted by an external device to the radio frequency transceiver 11. In this way, communication between the electronic device and the external device can be achieved.

The external device that receives the first signal and the external device that transmits the second signal may be the same or different. In practical applications, after the first antenna and the second antenna receive the second signal, the second signal may be preprocessed, for example, de-noised, and the like, which is not limited herein.

In the embodiment of the present application, the first signal and the second signal both belong to low frequency signals. That is, the frequencies of the first signal and the second signal both belong to a low frequency band. The frequency bands to which the first signal and the second signal belong may be a first frequency band, a second frequency band, and a third frequency band. In this embodiment, the first frequency band, the second frequency band, and the third frequency band are not limited, the number corresponding to the first frequency band may be 20, the number corresponding to the second frequency band may be 8, and the number corresponding to the third frequency band may be 28.

In the embodiment of the present application, the first transceiver 12 is used to assist the rf transceiver 11 in transmitting the first signal and receiving the second signal. Referring to fig. 2, in one possible example, the first transceiver 12 includes a first transmitting unit 121 connected to the radio frequency transceiver 11 and the first filter 14, and a first receiving unit 122 connected to the radio frequency transceiver 11, the second filter 16 and the switch circuit 17.

The first transmitting unit 121 may include a Power Amplifier (PA) and a switch. The first receiving unit 122 may include a filter and a Low Noise Amplifier (LNA). The power amplifier is mainly used for power amplification to meet system requirements. The low-noise amplifier is mainly used in the design of a receiving circuit and is used for amplifying a receiving signal. Since the signal-to-noise ratio in the receiving circuit is usually very low, often the signal is much smaller than the noise, the received signal is amplified by a low noise amplifier, which can suppress the noise. The filter is used for signal frequency division and outputting signals meeting the preset frequency band. The switch is used for controlling the signal flow direction.

Alternatively, the first transmitting unit 121 may be a Multi-mode, Multi-band, linear Power Amplifier (MMPA). The first receiving unit 122 may also be a device integrated by a Power Amplifier with Antenna Switch Module, a Filter and a Duplexer (PAMID) and MLNA, a device integrated by a Diversity Receive Module with Antenna Switch Module and Filter (DFEM) and a Multi-band Low Noise Amplifier (MLNA), or a device integrated by an Antenna Switch Module, a Filter and MLNA.

In the embodiment of the present application, the second transceiver 13 is also used for assisting the rf transceiver 11 to transmit the first signal and receive the second signal. The second transceiver 13 may be a PAMID and MLNA integrated device or may be an NR-capable MMPA.

Referring to fig. 3, in a possible example, the second transceiver 13 includes a second transmitting unit 131 connected to the radio frequency transceiver 11, the first filter 14 and the switch circuit 17, and a second receiving unit 132 connected to the radio frequency transceiver 11 and the second transmitting unit 131.

The second transmitting unit 131 may include a power amplifier, a duplexer, a filter, and a switch, among others. The second receiving unit 132 may include a low noise amplifier. The second transmitting unit 131 may be PAMID and the second receiving unit 132 may be MLNA.

It can be seen that, when the first transceiver 12 includes the first transmitting unit 121 and the first receiving unit 122, and the second transceiver 13 includes the second transmitting unit 131 and the second receiving unit 132, the first signal from the radio frequency transceiver 11 may be transmitted to the switch circuit 17 in the order of the first transmitting unit 121, the first filter 14, and the second transmitting unit 131, may also be transmitted to the switch circuit 17 through the second transmitting unit 131, and may also be transmitted to the switch circuit 17 in the order of the second transmitting unit 131, the first filter 14, and the second transmitting unit 131. The second signal may be sent from the switch circuit 17 to the rf transceiver 11 through the first receiving unit 122 or sent to the rf transceiver 11 in the order of the first receiving unit 122, the second filter 16 and the first receiving unit 122, may also be sent to the rf transceiver 11 in the order of the second transmitting unit 131 and the second receiving unit 132, and may also be sent to the rf transceiver 11 in the order of the second transmitting unit 131, the first filter 14 and the second receiving unit 132.

Referring to fig. 1, the rf circuit includes five circuits, namely, a first circuit, a second circuit, a third circuit, a fourth circuit and a fifth circuit. Wherein the first circuit comprises a first transceiver 12, a first filter 14 and a second transceiver 13. The second circuit comprises a second transceiver 13. The third circuit comprises a second transceiver 13 and a first filter 14. The fourth circuit comprises the first transceiver 12. The fifth circuit comprises the first transceiver 12 and the second filter 16. It is understood that the first signal may be transmitted to the antenna through the first circuit, the second circuit, or the third circuit, and the second signal may be transmitted to the radio frequency transceiver through the second circuit, the third circuit, the fourth circuit, or the fifth circuit.

In a possible embodiment, when the input circuit is a first circuit, the first signal is transmitted in the first circuit sequentially from the first transceiver 12, the first filter 14, and the second transceiver 13. When the first transceiver 12 includes the first transmitting unit 121 and the first receiving unit 122, the first signal is transmitted in the first circuit in the order of the first transmitting unit 121, the first filter 14, and the second transceiver 13. When the first transceiver 12 includes the first transmitting unit 121 and the first receiving unit 122, and the second transceiver 13 includes the second transmitting unit 131 and the second receiving unit 132, the first signal is transmitted in the first circuit in the order of the first transmitting unit 121, the first filter 14, and the second transmitting unit 131.

When the input circuit is the second circuit, the first signal is directly transmitted to the changeover switch circuit 17 through the second transceiver 13. When the second transceiver 13 includes the second transmitting unit 131 and the second receiving unit 132, the first signal is directly transmitted to the changeover switch circuit 17 through the second transmitting unit 131.

When the output circuit is a second circuit, the second signal in the second circuit is directly transmitted to the rf transceiver 11 through the switch circuit 17 and the second transceiver 13. When the second transceiver 13 includes the second transmitting unit 131 and the second receiving unit 132, the second transmitting unit 131 and the second receiving unit 132 are sequentially transmitted in the second circuit.

When the input circuit is a third circuit, the third circuit transmits the first signal in the order of the second transceiver 13, the first filter 14, and the second transceiver 13. When the second transceiver 13 includes the second transmitting unit 131 and the second receiving unit 132, the order of transmission of the first signal in the third circuit is the second transmitting unit 131, the first filter 14, and the second transmitting unit 131 in this order.

When the output circuit is a third circuit, the third circuit transmits the second signal in the order of the second transceiver 13, the first filter 14, and the second transceiver 13. When the second transceiver 13 includes the second transmitting unit 131 and the second receiving unit 132, the second transmitting unit 131, the first filter 14, and the second receiving unit 132 are sequentially transmitted in the third circuit.

When the output circuit is a fourth circuit, the second signal is directly transmitted to the rf transceiver 11 through the switch circuit 17 and the first transceiver 12 in the fourth circuit. When the first transceiver 12 includes the first transmitting unit 121 and the first receiving unit 122, the second signal is directly transmitted to the radio frequency transceiver 11 through the changeover switch circuit 17 and the first receiving unit 122 in the fourth circuit.

When the output circuit is a fifth circuit, the fifth circuit transmits the second signal in the order of the first transceiver 12, the second filter 16, and the first transceiver 12. When the first transceiver 12 includes the first transmitting unit 121 and the first receiving unit 122, the transmitting order of the second signal in the fifth circuit is the first receiving unit 122, the second filter 16, and the first receiving unit 122 in this order.

Note that, if the first filter 14 is connected to the changeover switch circuit 17, the first signal can be directly transmitted through the first filter 14 and the changeover switch circuit 17.

In the embodiment of the present application, the first filter 14 and the second filter 16 are both configured to divide an input signal and output a signal of a preset frequency band. It is understood that the input signal is divided by the first filter 14 and the second filter 16, and the divided signal is output from the corresponding output interface, so as to realize communication between signals of different frequencies.

The first filter 14 may be a Quad-plexer (Quad-plexer). The device frame is shown in fig. 4, and the quadruplex device comprises five

ports

401, 402, 403, 404 and 405. Where 401 is an antenna input interface (ANT), 402 and 403 are radio frequency transmit interfaces (TX), and 404 and 405 are radio frequency receive interfaces (RX).

In one possible embodiment, the ANT port 401 is a port through which TX signals of B20+ N28/N8 and RX signals of B20+ N28/N8 simultaneously pass, the TX port 402 is a port through which B20 flows in, the TX port 403 is a port through which N28 flows in, the RX403 is a port through which RX signals of B20+ N28 flows out, and the RX port 405 is a port through which diversity reception signals (DRX) of N8 flows out.

As can be seen, in NSA mode, a first signal and a second signal are input from the ANT port 401. If the frequency band of the first signal is B20, the first signal flows out from the TX port 402. If the frequency band of the first signal is N28, the first signal flows out from the TX port 403. If the frequency band of the first signal is N8, the first signal does not flow out of the quadplexer. If the frequency band of the second signal is B20 or N28, the second signal flows out from the RX port 404. If the frequency band of the second signal is N8, the second signal flows out from the RX port 405. Thus, the quadruplex can realize the transmission between signals corresponding to B20 and N28 in the NSA mode and the transmission of a signal for receiving N8.

In the embodiment of the present application, the second filter 16 may also be the above-mentioned quadplexer. Optionally, the second filter 16 is used to divide the input signals with frequencies B20 and B28.

In the embodiment of the present application, the directional coupler is a general microwave/millimeter wave component, and can be used for signal isolation, separation, and mixing, such as power monitoring, source output power amplitude stabilization, signal source isolation, frequency sweep test of transmission and reflection, and the like. In the embodiment of the present application, the directional coupler 15 is configured to forward a first signal transmitted by the first transceiver 12 to the directional coupler 17 when the input circuit is the first circuit, or forward a second signal output by the switch circuit 17 to the first filter 14 when the output circuit is the first circuit.

In the embodiment of the present application, the switch circuit 17 is switched to control the signal flow direction. The switch circuit 17 may include a plurality of input interfaces and a plurality of output interfaces, which is not limited in this application. In one possible example, the changeover switch circuit 17 includes at least one of: a dual-input dual-output switch (DPDT), a three-input three-output switch (3P 3T), and a Four-input dual-output switch (DP 4T).

The DPDT has 2 input (In) ports and 2 Output (OUT) ports, and can implement pairwise cross-connect switching. 3P3T is 3 In ports and 3 OUT ports, and can realize three-input and three-output arbitrary connection switching. DP4T is 4 In ports, 2 OUT ports, can realize two interline connection switch.

As previously mentioned, the radio frequency circuit comprises two antennas, a first antenna 18 and a second antenna 19. Therefore, the changeover switch circuit 17 includes at least two output ports. The radio frequency circuit further includes a first circuit, a second circuit, a third circuit, a fourth circuit, and a fifth circuit. Wherein the output ports (or input ports) of the first circuit, the second circuit and the third circuit are the second transceiver 13, and the output ports (or input ports) of the fourth circuit and the fifth circuit are the first transceiver 12. Therefore, the changeover switch circuit 17 includes at least two input ports. When the switch circuit is 3P3T or DP4T, the extra input port or output port may not be connected.

In the embodiment of the present application, the switch circuit 17 is configured to determine an input circuit from the first circuit, the second circuit, and the third circuit according to the frequency of the first signal and the network mode corresponding to the radio frequency circuit, and determine an output switch corresponding to the first antenna 18 or the second antenna 19; and sending the first signal to an antenna corresponding to the output switch according to the input circuit.

The network mode may include a 4G mode, i.e., a standalone LTE network, among others. The network mode may also include a 5G NSA mode, i.e. running both LTE and NR networks. In an embodiment of the application, the second network mode operable network comprises the first network mode operable network. The first network mode may be a 4G mode and the second network mode may be a 5G NSA mode.

It can be understood that, in the embodiment of the present application, different network modes and different input circuits and output switches corresponding to transmission signals are preset. When the rf transceiver 11 transmits a first signal, the switch circuit 17 determines an input circuit and an output switch according to a frequency band of the first signal and a network mode corresponding to the rf circuit. In this way, the first signal is input to the switch corresponding to the input circuit according to the input circuit, and is output from the interface corresponding to the output switch to flow to the corresponding antenna, thereby realizing that the electronic device transmits the signal to the external device.

The present application is not limited to the determination method of the input circuit and the output switch. In a possible example, when the network mode is the first network mode, the switch circuit 17 is specifically configured to determine that the input circuit is the second circuit when the frequency band of the first signal belongs to the first frequency band or the second frequency band, and the output switch corresponds to the first antenna; and when the frequency band of the first signal belongs to a third frequency band, determining that the input circuit is the third circuit, and the output switch corresponds to the first antenna.

The first frequency band, the second frequency band and the third frequency band are not limited in the present application. Optionally, the sequence number of the first frequency band is 20, the sequence number of the second frequency band is 8, and the sequence number of the third frequency band is 28.

That is, in the first network mode, when the frequency band of the first signal belongs to the first frequency band or the second frequency band, the first signal is input to the first antenna 18 through the second circuit. When the frequency band of the first signal belongs to the third frequency band, the first signal is input to the first antenna 18 through the third circuit.

The first network mode is a 4G mode, the first frequency band has a corresponding serial number of 20, the second frequency band has a corresponding serial number of 8, and the third frequency band has a corresponding serial number of 28. If the frequency band corresponding to the first signal is B20 or B8, the first signal is transmitted from the rf transceiver 11, through the second transceiver 13 and the tangent switch circuit 17 to the first antenna 18. If the frequency band corresponding to the first signal is B28, the first signal is transmitted from the rf transceiver 11, and then passes through the second transceiver 13, the first filter 14, the second transceiver 13, and the tangent switch circuit 17 to reach the first antenna 18.

In a possible example, when the network mode is a second network mode corresponding to the first frequency band and the second frequency band, the switch circuit 17 is specifically configured to determine that the input circuit is the first circuit and the output switch corresponds to the first antenna 18 when the frequency band of the first signal belongs to the first frequency band; when the frequency band of the first signal belongs to the second frequency band, the input circuit is determined to be the second circuit, and the output switch corresponds to the second antenna 19.

That is, in the second network mode corresponding to the first frequency band and the second frequency band, when the frequency band of the first signal belongs to the first frequency band, the first signal is input to the first antenna 18 through the first circuit. And when the frequency band of the first signal belongs to the second frequency band, the first signal is input to the second antenna 19 through the second circuit.

The NSA mode with the second network mode being 5G is exemplified by the serial number corresponding to the first frequency band being 20 and the serial number corresponding to the second frequency band being 8. If the frequency band corresponding to the first signal is B20, the first signal is transmitted from the rf transceiver 11, and then passes through the first transceiver 12, the first filter 14, the second transceiver 13, and the tangent switch circuit 17 to reach the first antenna 18. If the frequency band corresponding to the first signal is N8, the first signal is transmitted from the rf transceiver 11 to the second antenna 19 through the second transceiver 13 and the tangent switch circuit 17.

In a possible example, when the network mode is a second network mode corresponding to the first frequency band and the third frequency band, the switch circuit 17 is specifically configured to determine that the input circuit is the first circuit and the output switch corresponds to the first antenna 18 when the frequency band of the first signal belongs to the first frequency band; when the frequency band of the first signal belongs to the third frequency band, the input circuit is determined to be the third circuit, and the output switch corresponds to the first antenna 18.

That is, in the second network mode corresponding to the first frequency band and the second frequency band, when the frequency band of the first signal belongs to the first frequency band, the first signal is input to the first antenna 18 through the first circuit. And when the frequency band of the first signal belongs to the third frequency band, the first signal is input to the first antenna 18 through the third circuit.

The NSA mode with the second network mode being 5G, the serial number corresponding to the first frequency band being 20, and the serial number corresponding to the third frequency band being 28 is exemplified. If the frequency band corresponding to the first signal is B20, the first signal is transmitted from the rf transceiver 11, and then passes through the first transceiver 12, the first filter 14, the second transceiver 13, and the tangent switch circuit 17 to reach the first antenna 18. If the frequency band corresponding to the first signal is N28, the first signal is transmitted from the rf transceiver 11, and then passes through the second transceiver 13, the first filter 14, the second transceiver 13, and the tangent switch circuit 17 to reach the first antenna 18.

In the embodiment of the present application, the switch circuit 17 is further configured to determine an input switch corresponding to the first antenna 18 or the second antenna 19 according to a frequency of a second signal received by the first antenna 18 or the second antenna 19 from an external device, the network mode, and a reception mode corresponding to the radio frequency circuit, and determine an output circuit from the second circuit, the third circuit, the fourth circuit, and the fifth circuit; the second signal obtained from the input switch is sent to the radio frequency transceiver 11 according to the output circuit.

The receiving mode may include a primary set receiving mode and may also include a diversity receiving mode.

It can be understood that the embodiment of the present application presets an output circuit and an input switch corresponding to different network modes, reception modes, and frequencies of received signals. When the first antenna 18 or the second antenna 19 receives the second signal, the switch circuit 17 determines the output circuit and the input switch according to the frequency band of the second signal and the network mode and the receiving mode corresponding to the radio frequency circuit. In this way, the second signal is transmitted to the radio frequency transceiver 11 according to the output circuit, so that the electronic device receives the signal transmitted by the external device.

The present application is not limited to the determination method of the output circuit and the input switch. In a possible example, when the network mode is the first network mode, the switch circuit 17 is specifically configured to determine that the input switch corresponds to the first antenna 18 and the output circuit is the second circuit when the receiving mode is the dominant set receiving mode and the frequency band of the second signal belongs to the first frequency band or the second frequency band; when the receiving mode is the master set receiving mode and the frequency band of the second signal belongs to the third frequency band, determining that the input switch corresponds to the first antenna 18 and the output circuit is the third circuit; when the receiving mode is a diversity receiving mode and the frequency band of the second signal belongs to the third frequency band, determining that the input switch corresponds to the first antenna and the output circuit is the third circuit; when the receiving mode is a diversity receiving mode, it is determined that the input switch corresponds to the second antenna 19, and the output circuit is the fourth circuit.

That is, in the first network mode, when the reception mode of the radio frequency circuit is the main set reception mode, the second signal is received by the first antenna 18. If the frequency band of the second signal belongs to the first frequency band or the second frequency band, the second signal is input to the rf transceiver 11 through the second circuit. If the frequency band of the first signal belongs to the third frequency band, the second signal is input to the rf transceiver 11 through the third circuit. When the receiving mode is the diversity receiving mode, the second signal is received by the second antenna 19, and the second signal is input to the rf transceiver 11 through the fourth circuit.

The first network mode is a 4G mode, the first frequency band has a corresponding serial number of 20, the second frequency band has a corresponding serial number of 8, and the third frequency band has a corresponding serial number of 28. When the receiving mode of the rf circuit is the main set receiving mode, if the frequency band corresponding to the second signal is B20 or B8, the second signal starts from the first antenna 18 and reaches the rf transceiver 11 through the tangential switch circuit 17 and the second transceiver 13. If the frequency band corresponding to the second signal is B28, the second signal starts from the first antenna 18, passes through the tangential switch circuit 17, the second transceiver 13, the first filter 14 and the second transceiver 13, and arrives at the rf transceiver 11. When the receiving mode of the rf circuit is the diversity receiving mode, if the frequency band corresponding to the second signal is B20, B8, or B28, the second signal starts from the second antenna 19 and reaches the rf transceiver 11 through the tangent switch circuit 17 and the first transceiver 12.

In a possible example, when the network mode is a second network mode corresponding to the first frequency band and the second frequency band, the switch circuit 17 is specifically configured to determine that the input switch corresponds to the first antenna 18 when the receiving mode is the dominant set receiving mode, and the output circuit is the fifth circuit; when the receiving mode is the diversity receiving mode and the frequency band of the second signal belongs to the first frequency band, determining that the input switch corresponds to the second antenna 19 and the output circuit is the third circuit; when the receiving mode is the diversity receiving mode and the frequency band of the second signal belongs to the second frequency band, it is determined that the input switch corresponds to the second antenna 19, and the output circuit is the second circuit.

That is, in the second network mode, when the receiving mode of the rf circuit is the main set receiving mode, the second signal is received by the first antenna 18, and the second signal is input to the rf transceiver 11 through the fifth circuit. When the reception mode is the diversity reception mode, the second signal is received by the second antenna 19. If the frequency band of the second signal belongs to the first frequency band or the third frequency band, the second signal is input to the rf transceiver 11 through the third circuit. If the frequency band of the first signal belongs to the second frequency band, the second signal is input to the rf transceiver 11 through the second circuit.

The NSA mode with the second network mode being 5G is exemplified by the serial number corresponding to the first frequency band being 20 and the serial number corresponding to the second frequency band being 8. When the receiving mode is the dominant set receiving mode, if the frequency band corresponding to the second signal is B20 or N8, the second signal starts from the first antenna 18 and reaches the rf transceiver 11 through the tangential switch circuit 17, the first transceiver 12, the first filter 14, and the first transceiver 12. When the receiving mode is the diversity receiving mode, if the frequency band corresponding to the second signal is B20, the second signal starts from the second antenna 19 and reaches the radio frequency transceiver 11 through the tangent switch circuit 17, the second transceiver 13, the first filter 14 and the second transceiver 13. If the frequency band corresponding to the second signal is N8, the second signal starts from the second antenna 19 and reaches the rf transceiver 11 through the tangent switch circuit 17 and the second transceiver 13.

In a possible example, when the network mode is a second network mode corresponding to the first frequency band and the third frequency band, the switch circuit 17 is specifically configured to determine that the input switch corresponds to the second antenna 19 and the output circuit is the fifth circuit when the receiving mode is the dominant set receiving mode; when the receiving mode is the diversity receiving mode and the frequency band of the second signal belongs to the first frequency band or the third frequency band, it is determined that the input switch corresponds to the first antenna 18 and the output circuit is the third circuit.

That is, in the second network mode, when the receiving mode of the rf circuit is the main set receiving mode, the second signal is received by the second antenna 19, and the second signal is input to the rf transceiver 11 through the fifth circuit. When the reception mode is the diversity reception mode, the second signal is received by the first antenna 18. If the frequency band of the second signal belongs to the first frequency band or the third frequency band, the second signal is input to the rf transceiver 11 through the third circuit.

The NSA mode with the second network mode being 5G, the serial number corresponding to the first frequency band being 20, and the serial number corresponding to the third frequency band being 28 is exemplified. When the receiving mode is the dominant set receiving mode, if the frequency band corresponding to the second signal is B20 or N28, the second signal starts from the second antenna 19 and reaches the rf transceiver 11 through the tangent switch circuit 17, the first transceiver 12, the second filter 16, and the first transceiver 12. When the receiving mode is the diversity receiving mode, if the frequency band corresponding to the second signal is B20 or N28, the second signal starts from the first antenna 18 and reaches the rf transceiver 11 through the tangent switch circuit 17, the second transceiver 13, the first filter 14 and the second transceiver 13.

It can be understood that the radio frequency circuit provided by the application includes three input circuits (a first circuit, a second circuit and a third circuit), four output circuits (a second circuit, a third circuit, a fourth circuit and a fifth circuit) and two antennas (a first antenna and a second antenna), so that the situation that one antenna corresponds to one input circuit or one output circuit is avoided, and the layout of the antennas is reduced. And aiming at signals with different network modes and different frequency bands, signals transmitted by the radio frequency transceiver to external equipment are transmitted to the antenna through the three input circuits. And then aiming at signals in different network modes, different receiving modes and different frequency bands, the signals received by the antenna from the external equipment are transmitted to the radio frequency transceiver through the four output circuits, so that the flexibility of signal transmission is improved.

Embodiments of the present application provide further electronic devices, including any of the radio frequency circuits described in embodiments of the present application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a hardware mode or a software program mode.

The integrated unit, if implemented in the form of a software program module and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a read-only memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and the like.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash disk, ROM, RAM, magnetic or optical disk, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A radio frequency circuit comprising a radio frequency transceiver, first and second transceivers connected to the radio frequency transceiver, first filter and switcher circuit connected to the first and second transceivers, a second filter connected to the first transceiver, and first and second antennas connected to the switcher circuit; wherein the first circuit comprises the first transceiver, the first filter, and the second transceiver; the second circuit comprises the second transceiver; a third circuit comprises the second transceiver and the first filter; a fourth circuit comprises the first transceiver; a fifth circuit comprises the first transceiver and the second filter;

the switch circuit is further configured to determine an input switch corresponding to the first antenna or the second antenna according to a frequency of a second signal received by the first antenna or the second antenna from an external device, the network mode, and a reception mode corresponding to the radio frequency circuit, and determine an output circuit from the second circuit, the third circuit, the fourth circuit, and the fifth circuit; transmitting a second signal obtained from the input switch to the radio frequency transceiver according to the output circuit;

wherein the content of the first and second substances,

the network mode includes a first network mode or a second network mode, the first network mode is a fourth generation mobile communication technology 4G mode, and the second network mode is a non-independent networking NSA mode of a fifth generation mobile communication technology 5G.

2. The rf circuit according to claim 1, wherein when the network mode is a first network mode, the switch circuit is specifically configured to determine that the input circuit is the second circuit and the output switch corresponds to the first antenna when a frequency band of the first signal belongs to a first frequency band or a second frequency band; when the frequency band of the first signal belongs to a third frequency band, determining that the input circuit is the third circuit, and the output switch corresponds to the first antenna; when the receiving mode is a dominant set receiving mode and the frequency band of the second signal belongs to the first frequency band or the second frequency band, determining that the input switch corresponds to the first antenna and the output circuit is the second circuit; when the receiving mode is the dominant set receiving mode and the frequency band of the second signal belongs to the third frequency band, determining that the input switch corresponds to the first antenna and the output circuit is the third circuit; and when the receiving mode is a diversity receiving mode, determining that the input switch corresponds to the second antenna, and the output circuit is the fourth circuit.

3. The rf circuit according to claim 2, wherein when the network mode is a second network mode corresponding to the first frequency band and the second frequency band, the switch circuit is specifically configured to determine that the input circuit is the first circuit and the output switch corresponds to the first antenna when the frequency band of the first signal belongs to the first frequency band; when the frequency band of the first signal belongs to the second frequency band, determining that the input circuit is the second circuit, and the output switch corresponds to the second antenna; when the receiving mode is the main set receiving mode, determining that the input switch corresponds to the first antenna, and the output circuit is the fifth circuit; when the receiving mode is the diversity receiving mode and the frequency band of the second signal belongs to the first frequency band, determining that the input switch corresponds to the second antenna and the output circuit is the third circuit; and when the receiving mode is the diversity receiving mode and the frequency band of the second signal belongs to the second frequency band, determining that the input switch corresponds to the second antenna, and the output circuit is the second circuit.

4. The rf circuit according to claim 2, wherein when the network mode is a second network mode corresponding to the first frequency band and the third frequency band, the switch circuit is specifically configured to determine that the input circuit is the first circuit and the output switch corresponds to the first antenna when the frequency band of the first signal belongs to the first frequency band; when the frequency band of the first signal belongs to the third frequency band, determining that the input circuit is the third circuit, and the output switch corresponds to the first antenna; when the receiving mode is the main set receiving mode, determining that the input switch corresponds to the second antenna, and the output circuit is the fifth circuit; and when the receiving mode is the diversity receiving mode and the frequency band of the second signal belongs to the first frequency band or the third frequency band, determining that the input switch corresponds to the first antenna and the output circuit is the third circuit.

5. The radio frequency circuit according to any of claims 1-4, wherein the first transceiver comprises a first transmit unit connected to the radio frequency transceiver and the first filter, and a first receive unit connected to the radio frequency transceiver, the second filter, and the switch circuit; when the input circuit is the first circuit, the first signal is sequentially transmitted to the first transmitting unit, the first filter and the second transceiver in the first circuit; when the output circuit is the fourth circuit, the second signal is directly sent to the radio frequency transceiver through the change-over switch circuit and the first receiving unit; when the output circuit is the fifth circuit, the transmitting order of the second signal in the fifth circuit is the first receiving unit, the second filter, and the first receiving unit in sequence.

6. The radio frequency circuit of claim 5, wherein the second transceiver includes a second transmitting unit connected to the radio frequency transceiver, the first filter, and the switcher circuit, and a second receiving unit connected to the second transmitting unit and the radio frequency transceiver; when the input circuit is the second circuit, the first signal is directly sent to the change-over switch circuit through the second sending unit; when the output circuit is the second circuit, the second signal is transmitted in the second circuit in the sequence of the second transmitting unit and the second receiving unit; when the input circuit is the third circuit, the transmission order of the first signal in the third circuit is the second transmitting unit, the first filter, and the second transmitting unit in this order; when the output circuit is the third circuit, the second signal is transmitted in the third circuit in the order of the second transmitting unit, the first filter, and the second receiving unit.

7. The radio frequency circuit of claim 6, wherein the first transmit unit includes a power amplifier and a switch; the first receiving unit comprises a filter and a low noise amplifier; the second sending unit comprises a power amplifier, a duplexer, a filter and a switch; the second receiving unit includes a low noise amplifier.

8. The radio frequency circuit according to any of claims 1-4, wherein the switcher circuit comprises at least one of: the circuit comprises a double-input double-output switch, a three-input three-output switch and a four-input double-output switch.

9. The radio frequency circuit according to any of claims 2-4, wherein the first frequency band is numbered 20, the second frequency band is numbered 8, and the third frequency band is numbered 28.

10. An electronic device, characterized in that,

comprising a radio frequency circuit as claimed in any one of claims 1 to 9.