Radio frequency circuit and electronic device

Abstract

The present invention provides a radio frequency circuit and an electronic device. The radio frequency circuit includes a radio frequency transceiver (1) having a first transmit port (11), a first radio frequency module (21) connected to a first antenna array (31), a second radio frequency module (22) connected to a second antenna array (32), and a first switch (4). A first input terminal of the first switch (4) is connected to the first transmit port (11), and two output terminals of the first switch are respectively connected to the two radio frequency modules. In a case that the first switch is in a first state, the first transmit port (11) is conductively connected to the first radio frequency module (21); or in a case that the first switch is in a second state, the first transmit port (11) is conductively connected to the second radio frequency module (22). (FIG. 1)

Description

Radio frequency circuit and electronic device

[0001] Cross Reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202010362992.8 filed in China on April 30, 2020, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of communication, and in particular to a radio frequency circuit and an electronic device. BACKGROUND

[0004] The fifth generation mobile communication technology (5th generation mobile networks, 5G) supports two modes in the development process: 1T4R (1 transmit 4 receive) and 2T4R (2 transmit 4 receive). The 5G new radio (New Radio, NR) frequency band supports 1T4R and 2T4R sounding reference signal (Sounding Reference Signal, SRS) antenna rotation transmission and antenna switching technology.

[0005] In the prior art, when 2T4R of one frequency band (for example, N78) is performed, the amplifiers corresponding to the transmission signals of TX1 and TX2 are fixed. Taking TX1 as the fixed transmission of 1T4R, only the TX1 path can be used, that is, only when 2T4R, the power amplifier (Power Amplifier, PA) corresponding to TX2 will work. Due to the layout and space reasons, the performance of a certain antenna is poor, and the loss in the radio frequency trace causes the imbalance of the antenna performance, so that it is impossible to switch to the antenna with poor performance. At this time, four antenna switching cannot be realized, and only three antenna switching or even two antenna switching can be realized.

[0006] SUMMARY

[0007] The embodiments of the present application provide a radio frequency circuit and an electronic device to solve the problem of imbalance of antenna performance caused by antenna layout and radio frequency trace loss in the prior art.

[0008] In order to solve the above problems, the embodiments of the present application are implemented as follows:

[0009] In a first aspect, the embodiments of the present application provide a radio frequency circuit, comprising:

[0010] The radio frequency transceiver comprises a first transmit port;

[0011] The first radio frequency module is connected to the first antenna array;

[0012] a second radio frequency module, the second radio frequency module being connected to the second antenna array;

[0013] a first switch, a first input end of the first switch being connected to the first transmitting port, two output ends of the first switch being connected to the first radio frequency module and the second radio frequency module respectively;

[0014] wherein, in a case that the first switch is in a first state, the first transmitting port is in communication with the first radio frequency module; in a case that the first switch is in a second state, the first transmitting port is in communication with the second radio frequency module.

[0015] In a second aspect, an embodiment of the present application provides an electronic device, comprising the radio frequency circuit.

[0016] The technical scheme of the present application can realize the switching of the antenna through different radio frequency modules by controlling the first transmitting port to be in communication with different radio frequency modules in combination with different antenna layouts, reduce the path loss caused by the radio frequency wiring, and further solve the problem of unbalanced antenna performance and improve the antenna switching performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 shows a radio frequency circuit schematic diagram one of an embodiment of the present application;

[0018] Fig. 2 shows a comparison diagram one of the improved radio frequency wiring path and the existing radio frequency wiring path of an embodiment of the present application;

[0019] Fig. 3 shows a radio frequency circuit schematic diagram two of an embodiment of the present application;

[0020] Fig. 4 shows a radio frequency circuit schematic diagram three of an embodiment of the present application;

[0021] Fig. 5 shows a comparison diagram two of the improved radio frequency wiring path and the existing radio frequency wiring path of an embodiment of the present application. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] An embodiment of the present application provides a radio frequency circuit, as shown in Fig. 1, Fig. 3 and Fig. 4, comprising:

[0024] a radio frequency transceiver 1, comprising a first transmitting port 11;

[0025] a first radio frequency module 21, the first radio frequency module 21 being connected to a first antenna array 31;

[0026] a second radio frequency module 22, the second radio frequency module 22 being connected to the second antenna array 32;

[0027] a first switch 4, a first input end of the first switch 4 being connected to the first transmitting port 11, two output ends of the first switch 4 being connected to the first radio frequency module 21 and the second radio frequency module 22 respectively;

[0028] In a case where the first switch 4 is in the first state, the first transmitting port 11 is in communication with the first radio frequency module 21; in a case where the first switch 4 is in the second state, the first transmitting port 11 is in communication with the second radio frequency module 22.

[0029] The radio frequency circuit provided by the embodiment of the present application comprises a radio frequency transceiver 1, a first radio frequency module 21, a second radio frequency module 22, a first antenna array 31, a second antenna array 32 and a first switch 4. The radio frequency transceiver 1 comprises a first transmitting port 11, which can be represented as TX1. The first radio frequency module 21 is connected to the first antenna array 31, the first antenna array 31 comprising at least one antenna, the second radio frequency module 22 being connected to the second antenna array 32, the second antenna array 32 comprising at least one antenna. The first transmitting port 11 is located at one end of the first switch 4, and the first radio frequency module 21 and the second radio frequency module 22 are located at the other end of the first switch 4.

[0030] For the first switch 4, the first switch 4 comprises a first input end and two output ends, wherein the first input end is connected to the first transmitting port 11, and the two output ends are connected to the first radio frequency module 21 and the second radio frequency module 22 respectively. Specifically, the first input end of the first switch 4 is connected to the first transmitting port 11, the first output end of the first switch 4 is connected to the first radio frequency module 21, and the second output end is connected to the second radio frequency module 22. The first input end can be in communication with the first output end, at this time, the first transmitting port 11 is connected to the first radio frequency module 21, or the first input end can be connected to the second output end, at this time, the first transmitting port 11 is connected to the second radio frequency module 22.

[0031] In a case where the first switch 4 is in the first state, the first input end of the first switch 4 is connected to the first output end, the first switch 4 controls the first transmitting port 11 to be in communication with the first radio frequency module 21, at this time, the first transmitting port 11 performs signal transmission through the first antenna array 31. In a case where the first switch 4 is in the second state, the first input end of the first switch 4 is connected to the second output end, the first switch 4 controls the first transmitting port 11 to be in communication with the second radio frequency module 22, at this time, the first transmitting port 11 performs signal transmission through the second antenna array 32.

[0032] The circuit structure can realize the communication of the first transmitting port and different radio frequency modules through the first switch, can select to realize the switching of the antenna through different radio frequency modules, and can reduce the path loss caused by radio frequency wiring, solve the problem of unbalanced antenna performance, and improve the antenna switching performance.

[0033] Optionally, in an embodiment of the present application, as shown in FIG. 1, FIG. 3 and FIG. 4, the radio frequency transceiver 1 further comprises: a second transmitting port 12; a second input end of the first switch 4 is connected to the second transmitting port 12; wherein, in the case that the first switch 4 is in the first state, the second transmitting port 12 is in communication with the second radio frequency module 22; in the case that the first switch 4 is in the second state, the second transmitting port 12 is in communication with the first radio frequency module 21.

[0034] The radio frequency transceiver 1 further comprises a second transmitting port 12, and the first switch 4 further comprises a second input end. The second input end of the first switch 4 is connected to the second transmitting port 12, and the second transmitting port 12 can be represented as TX2. The second input end of the first switch 4 can be in communication with the first output end, at this time the second transmitting port 12 is connected to the first radio frequency module 21, and the second input end can also be connected to the second output end, at this time the second transmitting port 12 is connected to the second radio frequency module 22. Wherein, the first switch 4 is a double-pole double-throw switch.

[0035] In the case that the first switch 4 is in the first state, the second input end of the first switch 4 is connected to the second output end, and the first switch 4 controls the second transmitting port 12 to be in communication with the second radio frequency module 22, at this time the second transmitting port 12 performs signal transmission through the second antenna array 32. In the case that the first switch 4 is in the second state, the second input end of the first switch 4 is connected to the first output end, and the first switch 4 controls the second transmitting port 12 to be in communication with the first radio frequency module 21, at this time the second transmitting port 12 performs signal transmission through the first antenna array 31.

[0036] Wherein, the first transmitting port 11 and the second transmitting port 12 can work simultaneously or not simultaneously, when the first transmitting port 11 and the second transmitting port 12 work simultaneously, the first transmitting port 11 and the second transmitting port 12 need to perform signal transmission through different antenna arrays.

[0037] When the first transmitting port 11 and the second transmitting port 12 work simultaneously, the first switch 4 can be in the first state, at this time, the first input end of the first switch 4 is connected to the first output end, and the second input end is connected to the second output end, at this time, the first transmitting port 11 is connected to the first radio frequency module 21, and signals are transmitted through the first antenna array 31, and the second transmitting port 12 is connected to the second radio frequency module 22, and signals are transmitted through the second antenna array 32. The first switch 4 can also be in the second state, at this time, the first input end of the first switch 4 is connected to the second output end, and the second input end is connected to the first output end, at this time, the first transmitting port 11 is connected to the second radio frequency module 22, and signals are transmitted through the second antenna array 32, and the second transmitting port 12 is connected to the first radio frequency module 21, and signals are transmitted through the first antenna array 31.

[0038] It should be noted that the first transmitting port 11 and the second transmitting port 12 can also work only one port. In the case that the first switch 4 is in the third state, the first transmitting port 11 is connected to the first radio frequency module 21, and the second transmitting port 12 is disconnected from the second radio frequency module 22, at this time, the first transmitting port 11 transmits signals through the first antenna array 31. In the case that the first switch 4 is in the fourth state, the first transmitting port 11 is disconnected from the first radio frequency module 21, and the second transmitting port 12 is connected to the second radio frequency module 22, at this time, the second transmitting port 12 transmits signals through the second antenna array 32.

[0039] In the case that the first switch 4 is in the fifth state, the first transmitting port 11 is connected to the second radio frequency module 22, and the second transmitting port 12 is disconnected from the first radio frequency module 21, at this time, the first transmitting port 11 transmits signals through the second antenna array 32. In the case that the first switch 4 is in the sixth state, the first transmitting port 11 is disconnected from the second radio frequency module 22, and the second transmitting port 12 is connected to the first radio frequency module 21, at this time, the second transmitting port 12 transmits signals through the first antenna array 31.

[0040] Optionally, in an embodiment of the present application, as shown in FIG. 1, FIG. 3 and FIG. 4, the radio frequency circuit further comprises: a third radio frequency module 23 and a fourth radio frequency module 24;

[0041] The radio frequency transceiver 1 further comprises: a first receiving port 13, a second receiving port 14, a third receiving port 15 and a fourth receiving port 16;

[0042] The first receiving port 13 is connected to the first radio frequency module 21, the second receiving port 14 is connected to the second radio frequency module 22, the third receiving port 15 is connected to the third radio frequency module 23, and the fourth receiving port 16 is connected to the fourth radio frequency module 24;

[0043] The first radio frequency module 21 and the second radio frequency module 22 are radio frequency transceiver modules, and the third radio frequency module 23 and the fourth radio frequency module 24 are radio frequency receiving modules.

[0044] The radio frequency circuit further comprises the third radio frequency module 23 and the fourth radio frequency module 24, wherein the first radio frequency module 21 and the second radio frequency module 22 are radio frequency transceiver modules, and can be used for transmitting and receiving radio frequency signals, and the third radio frequency module 23 and the fourth radio frequency module 24 are radio frequency receiving modules, and are used only for receiving radio frequency signals.

[0045] The radio frequency transceiver 1 further comprises a first receiving port 13 corresponding to the first transmitting port 11, a second receiving port 14 corresponding to the second transmitting port 12, a third receiving port 15, and a fourth receiving port 16. The first receiving port 13 is connected to the first radio frequency module 21, and is used for receiving a radio frequency signal transmitted through the first radio frequency module 21. The second receiving port 14 is connected to the second radio frequency module 22, and is used for receiving a radio frequency signal transmitted through the second radio frequency module 22. The third receiving port 15 is connected to the third radio frequency module 23, and is used for receiving a radio frequency signal transmitted through the third radio frequency module 23. The fourth receiving port 16 is connected to the fourth radio frequency module 24, and is used for receiving a radio frequency signal transmitted through the fourth radio frequency module 24.

[0046] The above structure can realize one transmitting and four receiving or two transmitting and four receiving. When only the first transmitting port 11 or the second transmitting port 12 works, one transmitting and four receiving can be realized. At this time, the first transmitting port 11 can realize signal transmission through the first antenna array 31 or the second antenna array 32, and the second transmitting port 12 can realize signal transmission through the second antenna array 32 or the first antenna array 31. When the first transmitting port 11 and the second transmitting port 12 work simultaneously, two transmitting and four receiving can be realized. At this time, the first transmitting port 11 can realize signal transmission through the first antenna array 31, and the second transmitting port 12 can realize signal transmission through the second antenna array 32, or the first transmitting port 11 can realize signal transmission through the second antenna array 32, and the second transmitting port 12 can realize signal transmission through the first antenna array 31.

[0047] Optionally, in an embodiment of the present application, as shown in FIG. 1, the first antenna array 31 comprises three antennas, the second antenna array 32 comprises one antenna, and the radio frequency circuit further comprises a second switch 5.

[0048] The second radio frequency module 22 is connected to the antenna in the second antenna array 32.

[0049] When transmitting signals through the first radio frequency module 21, the first radio frequency module 21 is connected to an antenna in one of the first antenna arrays 31 through the second switch 5; when synchronously receiving signals, the second switch 5 controls the first radio frequency module 21, the third radio frequency module 23 and the fourth radio frequency module 24 to be connected to an antenna in one of the first antenna arrays 31 respectively.

[0050] The first switch 4 is arranged to enable the first transmitting port 11 to transmit signals through the first radio frequency module 21 or through the second radio frequency module 22. When the first transmitting port 11 is connected to the first radio frequency module 21, the second switch 5 can switch among the three antennas in the first antenna array 31, and when the first transmitting port 11 is connected to the second radio frequency module 22, the second switch 5 can switch to an antenna in the second antenna array 32, thus the first transmitting port 11 can realize four-antenna switching. Similarly, the second transmitting port 12 can also realize four-antenna switching, and the process is similar to that of the first transmitting port 11, which will not be described here.

[0051] When receiving signals, the second antenna array 32 is connected to the second receiving port 14 through the second radio frequency module 22, thus the second receiving port 14 receives signals transmitted by the antennas in the second antenna array 32. The second switch 5 can control the first radio frequency module 21 to be connected to one of the antennas in the first antenna array 31, so that the first receiving port 13 receives signals transmitted by the antenna, the second switch 5 can control the third radio frequency module 23 to be connected to another antenna in the first antenna array 31, so that the third receiving port 15 receives signals, and the second switch 5 can control the fourth radio frequency module 24 to be connected to the remaining antenna in the first antenna array 31, so that the fourth receiving port 16 receives signals.

[0052] Optionally, the second switch 5 is a three-pole three-throw switch; when transmitting signals through the first radio frequency module 21, one of the throw positions of the second switch 5 is connected to one of the common terminals; when synchronously receiving signals of four antennas, the three throw positions of the second switch 5 are connected to the three common terminals.

[0053] The second switch 5 includes three common terminals and three throw positions, wherein the first throw position of the second switch 5 is connected to the first radio frequency module 21, the second throw position of the second switch 5 is connected to the third radio frequency module 23, the third throw position of the second switch 5 is connected to the fourth radio frequency module 24, and the first common terminal, the second common terminal and the third common terminal of the second switch 5 are connected to the three antennas of the first antenna array 31 respectively. The first throw position can be connected to the first common terminal, the second common terminal or the third common terminal, and the corresponding second throw position can also be connected to the first common terminal, the second common terminal or the third common terminal, and the third throw position can also be connected to the first common terminal, the second common terminal or the third common terminal.

[0054] When the signal is transmitted through the first radio frequency module 21 at the first transmitting port 11 or the second transmitting port 12, the first throw terminal of the second switch 5 is connected with any one of the common terminals, and when the signal is received, the three throw terminals of the second switch 5 can be connected with the three common terminals in any combination, as long as the connection between the three throw terminals and the three common terminals is ensured.

[0055] For example, when the first throw terminal of the second switch 5 is connected with the second common terminal during the signal transmission, the antenna connected with the second common terminal is in communication with the first radio frequency module 21, and the first radio frequency module 21 transmits the signal through the antenna connected with the second common terminal. During the signal reception, when the first throw terminal of the second switch 5 is connected with the second common terminal, the second throw terminal is connected with the third common terminal, and the third throw terminal is connected with the first common terminal, the antenna connected with the second common terminal is in communication with the first radio frequency module 21, the antenna connected with the third common terminal is in communication with the third radio frequency module 23, and the antenna connected with the first common terminal is in communication with the fourth radio frequency module 24, so that the first radio frequency module 21 receives the signal of the antenna connected with the second common terminal, the third radio frequency module 23 receives the signal of the antenna connected with the third common terminal, and the fourth radio frequency module 24 receives the signal of the antenna connected with the first common terminal. For other combinations of the common terminals and the throw terminals of the second switch 5, they are not listed and described here.

[0056] The above structure can solve the antenna layout problem shown in FIG. 2. In FIG. 2, because ANT4 (corresponding to the antenna in the second antenna array 32 in FIG. 1) is far away from the radio frequency circuit, the original line (the dashed part) has large loss, thereby causing the signal transmitted by ANT4 to have poor performance than other antennas. By directly connecting to the PA2 of the second radio frequency module and connecting to ANT4 (the solid part) through the first switch, the loss caused by the radio frequency line can be reduced, the problem of unbalanced antenna performance can be solved, and the antenna switching performance can reach an optimal state. At this time, the switch module in FIG. 2 is the second switch in FIG. 1.

[0057] Optionally, in an embodiment of the present application, as shown in FIG. 3, the first antenna array 31 includes a third antenna, a fourth antenna, and a fifth antenna, the second antenna array 32 includes a sixth antenna, and the radio frequency circuit further includes a third switch 61, a fourth switch 62, and a fifth switch 63; the second radio frequency module 22 is connected with the sixth antenna; the input end of the third switch 61 is connected with the first radio frequency module 21, and the multiple output ends of the third switch 61 are respectively connected with the third antenna through the fifth switch 63, connected with the fourth antenna through the fourth switch 62, and directly connected with the fifth antenna.

[0058] The first transmitting port 11 can transmit signals through the first radio frequency module 21 or the second radio frequency module 22 by setting the first switch 4. When the first transmitting port 11 is connected to the first radio frequency module 21, the third switch 61, the fourth switch 62 and the fifth switch 63 can be switched among the third antenna, the fourth antenna and the fifth antenna. When the first transmitting port 11 is connected to the second radio frequency module 22, the sixth antenna can be switched. Therefore, the first transmitting port 11 can realize four antenna switching. Similarly, the second transmitting port 12 can also realize four antenna switching, and the process is similar to that of the first transmitting port 11, which will not be described here.

[0059] The input end of the third switch 61 is connected to the first radio frequency module 21, and the multiple output ends of the third switch 61 are respectively connected to the first antenna array 31. When the third switch 61 is connected to the first antenna array 31, it can be directly connected to the fifth antenna, connected to the fourth antenna through the fourth switch 62, or connected to the third antenna through the fifth switch 63.

[0060] Optionally, the third switch 61 is a single-throw three-pole switch, the fourth switch 62 and the fifth switch 63 are single-throw two-pole switches, the common end of the third switch 61 is connected to the first radio frequency module 21, the first pole end of the third switch 61 is connected to the fifth antenna, the second pole end of the third switch 61 is connected to the first pole end of the fourth switch 62, and the third pole end of the third switch 61 is connected to the first pole end of the fifth switch 63. The second pole end of the fourth switch 62 is connected to the third radio frequency module 23, and the common end of the fourth switch 62 is connected to the fourth antenna. The second pole end of the fifth switch 63 is connected to the fourth radio frequency module 24, and the common end of the fifth switch 63 is connected to the third antenna.

[0061] The third switch 61 is a single-throw three-pole switch, including a common end and three pole ends. The common end is connected to the first radio frequency module 21, and the first pole end of the third switch 61 is connected to the fifth antenna in the first antenna array 31. The second pole end of the third switch 61 is connected to the fourth switch 62, which includes a common end and two pole ends. The second pole end of the third switch 61 is connected to the first pole end of the fourth switch 62, the second pole end of the fourth switch 62 is connected to the third radio frequency module 23, and the common end of the fourth switch 62 is connected to the fourth antenna in the first antenna array 31. The third pole end of the third switch 61 is connected to the fifth switch 63, which includes a common end and two pole ends. The third pole end of the third switch 61 is connected to the first pole end of the fifth switch 63, the second pole end of the fifth switch 63 is connected to the fourth radio frequency module 24, and the common end of the fifth switch 63 is connected to the third antenna in the first antenna array 31.

[0062] When the common terminal of the fourth switch 62 is connected with the first throw terminal, the fourth antenna connected with the common terminal of the fourth switch 62 can be connected to the second throw terminal of the third switch 61, when the second throw terminal of the third switch 61 is connected with the common terminal, the communication between the fourth antenna connected with the fourth switch 62 and the first radio frequency module 21 is realized, when the common terminal of the fourth switch 62 is connected with the second throw terminal, the communication between the fourth antenna connected with the fourth switch 62 and the third radio frequency module 23 is realized.

[0063] When the common terminal of the fifth switch 63 is connected with the first throw terminal, the third antenna connected with the common terminal of the fifth switch 63 can be connected to the third throw terminal of the third switch 61, when the third throw terminal of the third switch 61 is connected with the common terminal, the communication between the third antenna connected with the fifth switch 63 and the first radio frequency module 21 is realized, when the common terminal of the fifth switch 63 is connected with the second throw terminal, the communication between the third antenna connected with the fifth switch 63 and the fourth radio frequency module 24 is realized. When the first throw terminal of the third switch 61 is connected with the common terminal, the fifth antenna directly connected with the third switch 61 is in communication with the first radio frequency module 21.

[0064] Optionally, when the signal is transmitted through the first radio frequency module 21, the first radio frequency module 21 is connected to the fifth antenna through the third switch 61, or the first radio frequency module 21 is connected to the fourth antenna through the third switch 61 and the fourth switch 62, or the first radio frequency module 21 is connected to the third antenna through the third switch 61 and the fifth switch 63.

[0065] When the four-antenna signal is synchronously received, the first radio frequency module 21 is connected to the fifth antenna through the third switch 61, the second radio frequency module 22 is connected to the sixth antenna, the third radio frequency module 23 is connected to the fourth antenna through the fourth switch 62, and the fourth radio frequency module 24 is connected to the third antenna through the fifth switch 63.

[0066] Since the second radio frequency module 22 is directly connected to the sixth antenna in the second antenna array 32, when signal transmission is performed through the second radio frequency module 22, the signal can be directly transmitted through the sixth antenna. When signal transmission is performed through the first radio frequency module 21, the third switch 61 can connect the fifth antenna directly connected to the third switch 61 to the first radio frequency module 21, so that the first transmission port 11 or the second transmission port 12 transmits the signal through the fifth antenna directly connected to the third switch 61; the third switch 61 can also connect the first radio frequency module 21 to the first throw position end of the fourth switch 62, when the common end of the fourth switch 62 is connected to the first throw position end, the fourth antenna connected to the fourth switch 62 is connected to the first radio frequency module 21, at this time, the first transmission port 11 or the second transmission port 12 transmits the signal through the fourth antenna connected to the fourth switch 62; the third switch 61 can also connect the first radio frequency module 21 to the first throw position end of the fifth switch 63, when the common end of the fifth switch 63 is connected to the first throw position end, the third antenna connected to the fifth switch 63 is connected to the first radio frequency module 21, at this time, the first transmission port 11 or the second transmission port 12 transmits the signal through the third antenna connected to the fifth switch 63.

[0067] When synchronous signal reception is performed, since the second radio frequency module 22 is directly connected to the sixth antenna in the second antenna array 32, the signal of the sixth antenna can be directly received. For the first antenna array 31, the first radio frequency module 21 is connected to the fifth antenna in the first antenna array 31 through the third switch 61, specifically, the common end of the third switch 61 is connected to the first throw position end, and the first radio frequency module 21 receives the signal of the fifth antenna directly connected to the third switch 61. The third radio frequency module 23 is connected to the fourth antenna in the first antenna array 31 through the fourth switch 62, specifically, the common end of the fourth switch 62 is connected to the second throw position end, and the third radio frequency module 23 receives the signal of the fourth antenna connected to the fourth switch 62. The fourth radio frequency module 24 is connected to the third antenna in the first antenna array 31 through the fifth switch 63, specifically, the common end of the fifth switch 63 is connected to the second throw position end, and the fourth radio frequency module 24 receives the signal of the third antenna connected to the fifth switch 63.

[0068] The above structure can also solve the antenna layout problem shown in FIG. 2. In FIG. 2, since ANT4 (corresponding to the sixth antenna in the second antenna array 32 in FIG. 3) is far away from the radio frequency circuit, the original line (dashed part) has large loss, thereby causing the signal transmitted by ANT4 to have poor performance than other antennas. By being directly connected to the PA2 of the second radio frequency module and being connected to ANT4 (solid part) through the first switch, the loss caused by the radio frequency line can be reduced, the problem of unbalanced antenna performance can be solved, and the antenna switching performance can reach an optimal state. At this time, the switch module in FIG. 2 is the third switch 61, the fourth switch 62 and the fifth switch 63 in FIG. 3.

[0069] Optionally, in an embodiment of the present application, as shown in FIG. 4, the first antenna array 31 includes a seventh antenna and an eighth antenna, the second antenna array 32 includes a ninth antenna and a tenth antenna, and the radio frequency circuit further includes a sixth switch 71, a seventh switch 72, an eighth switch 73 and a ninth switch 74;

[0070] The input end of the sixth switch 71 is connected to the second radio frequency module 22, and the two output ends of the sixth switch 71 are respectively connected to the ninth antenna through the eighth switch 73 and directly connected to the tenth antenna;

[0071] The input end of the seventh switch 72 is connected to the first radio frequency module 21, and the two output ends of the seventh switch 72 are respectively connected to the seventh antenna through the ninth switch 74 and directly connected to the eighth antenna.

[0072] By setting the first switch 4, the first transmitting port 11 can transmit signals through the first radio frequency module 21 or through the second radio frequency module 22. Correspondingly, the second transmitting port 12 can also transmit signals through the first radio frequency module 21 or through the second radio frequency module 22.

[0073] The first antenna array 31 includes a seventh antenna and an eighth antenna, and the second antenna array 32 includes a ninth antenna and a tenth antenna. The radio frequency circuit further includes a sixth switch 71, a seventh switch 72, an eighth switch 73 and a ninth switch 74. The first radio frequency module 21 can be connected to the eighth antenna in the first antenna array 31 through the seventh switch 72, and can be connected to the seventh antenna in the first antenna array 31 through the seventh switch 72 and the ninth switch 74. The second radio frequency module 22 can be connected to the tenth antenna in the second antenna array 32 through the sixth switch 71, and can be connected to the ninth antenna in the second antenna array 32 through the sixth switch 71 and the eighth switch 73.

[0074] Optionally, the sixth switch 71, the seventh switch 72, the eighth switch 73 and the ninth switch 74 are all single-pole double-throw switches;

[0075] The common end of the sixth switch 71 is connected to the second radio frequency module 22, the first throw end of the sixth switch 71 is connected to the tenth antenna, the second throw end of the sixth switch 71 is connected to the first throw end of the eighth switch 73, the second throw end of the eighth switch 73 is connected to the third radio frequency module 23, and the common end of the eighth switch 73 is connected to the ninth antenna;

[0076] The common terminal of the seventh switch 72 is connected with the first radio frequency module 21, the first throw terminal of the seventh switch 72 is connected with the eighth antenna, the second throw terminal of the seventh switch 72 is connected with the first throw terminal of the ninth switch 74, the second throw terminal of the ninth switch 74 is connected with the fourth radio frequency module 24, and the common terminal of the ninth switch 74 is connected with the seventh antenna.

[0077] When the first radio frequency module 21 is connected with the first transmitting port 11, the seventh switch 72 can be connected with the eighth antenna in the first antenna array 31 or the first throw terminal of the ninth switch 74, and since the ninth switch 74 is connected with the seventh antenna in the first antenna array 31, the first radio frequency module 21 can be switched between the eighth antenna and the seventh antenna. When the first radio frequency module 21 is connected with the second transmitting port 12, the first radio frequency module 21 can also be switched between the eighth antenna and the seventh antenna. When the second radio frequency module 22 is connected with the first transmitting port 11, the sixth switch 71 can be connected with the tenth antenna in the second antenna array 32 or the first throw terminal of the eighth switch 73, and since the eighth switch 73 is connected with the ninth antenna in the second antenna array 32, the second radio frequency module 22 can be switched between the ninth antenna and the tenth antenna. When the second radio frequency module 22 is connected with the second transmitting port 12, the second radio frequency module 22 can also be switched between the ninth antenna and the tenth antenna.

[0078] The sixth switch 71 includes a common terminal and two throw terminals, wherein the common terminal of the sixth switch 71 is connected with the second radio frequency module 22, the first throw terminal of the sixth switch 71 is connected with the tenth antenna, and the second throw terminal of the sixth switch 71 is connected with the first throw terminal of the eighth switch 73. The eighth switch 73 also includes a second throw terminal and a common terminal, the second throw terminal of the eighth switch 73 is connected with the third radio frequency module 23, and the common terminal of the eighth switch 73 is connected with the ninth antenna. When the common terminal of the eighth switch 73 is connected with the first throw terminal, the ninth antenna connected with the eighth switch 73 is connected with the second throw terminal of the sixth switch 71. When the second throw terminal of the sixth switch 71 is connected with the common terminal, the ninth antenna connected with the eighth switch 73 is connected with the second radio frequency module 22. When the common terminal of the eighth switch 73 is connected with the second throw terminal, the ninth antenna connected with the eighth switch 73 is connected with the third radio frequency module 23.

[0079] The seventh switch 72 includes a common terminal and two throw terminals, wherein the common terminal of the seventh switch 72 is connected to the first radio frequency module 21, the first throw terminal of the seventh switch 72 is connected to the eighth antenna, and the second throw terminal of the seventh switch 72 is connected to the first throw terminal of the ninth switch 74. The ninth switch 74 also includes a second throw terminal and a common terminal, the second throw terminal of the ninth switch 74 is connected to the fourth radio frequency module 24, and the common terminal of the ninth switch 74 is connected to the seventh antenna. When the common terminal of the ninth switch 74 is connected to the first throw terminal, the seventh antenna connected to the ninth switch 74 is in communication with the second throw terminal of the seventh switch 72. When the second throw terminal of the seventh switch 72 is connected to the common terminal, the seventh antenna connected to the ninth switch 74 is in communication with the first radio frequency module 21. When the common terminal of the ninth switch 74 is connected to the second throw terminal, the seventh antenna connected to the ninth switch 74 is in communication with the fourth radio frequency module 24.

[0080] Optionally, when the signal is transmitted by the second radio frequency module 22, the second radio frequency module 22 is connected to the tenth antenna through the sixth switch 71, or the second radio frequency module 22 is connected to the ninth antenna through the sixth switch 71 and the eighth switch 73; and / or

[0081] When the signal is transmitted by the first radio frequency module 21, the first radio frequency module 21 is connected to the eighth antenna through the seventh switch 72, or the first radio frequency module 21 is connected to the seventh antenna through the seventh switch 72 and the ninth switch 74.

[0082] When the signal is transmitted by the second radio frequency module 22, the sixth switch 71 can connect the second radio frequency module 22 to the tenth antenna, so that the first transmission port 11 or the second transmission port 12 transmits the signal through the tenth antenna; the sixth switch 71 can also connect the second radio frequency module 22 to the first throw terminal of the eighth switch 73, so that the first transmission port 11 or the second transmission port 12 transmits the signal through the ninth antenna when the ninth antenna is in communication with the first throw terminal of the eighth switch 73.

[0083] When the signal is transmitted by the first radio frequency module 21, the seventh switch 72 can connect the first radio frequency module 21 to the eighth antenna, so that the first transmission port 11 or the second transmission port 12 transmits the signal through the eighth antenna; the seventh switch 72 can also connect the first radio frequency module 21 to the first throw terminal of the ninth switch 74, so that the first transmission port 11 or the second transmission port 12 transmits the signal through the seventh antenna when the seventh antenna is in communication with the first throw terminal of the ninth switch 74.

[0084] The second radio frequency module 22 and the first radio frequency module 21 can transmit signals at the same time, at which time the second radio frequency module 22 transmits signals through the second antenna array 32, and the first radio frequency module 21 transmits signals through the first antenna array 31. One of the second radio frequency module 22 and the first radio frequency module 21 can also transmit signals.

[0085] Optionally, in the four-antenna signal synchronous receiving, the first radio frequency module 21 is connected to the eighth antenna through the seventh switch 72, the second radio frequency module 22 is connected to the tenth antenna through the sixth switch 71, the third radio frequency module 23 is connected to the ninth antenna through the eighth switch 73, and the fourth radio frequency module 24 is connected to the seventh antenna through the ninth switch 74.

[0086] In the synchronous receiving of signals, the first throw end of the sixth switch 71 is connected to the common end, so that the tenth antenna is connected to the second radio frequency module 22; the first throw end of the seventh switch 72 is connected to the common end, so that the eighth antenna is connected to the first radio frequency module 21; the second throw end of the eighth switch 73 is connected to the common end, so that the ninth antenna is connected to the third radio frequency module 23; and the second throw end of the ninth switch 74 is connected to the common end, so that the seventh antenna is connected to the fourth radio frequency module 24.

[0087] The above structure can solve the antenna layout problem shown in FIG. 5. In FIG. 5, because the distance between ANT4 (corresponding to the tenth antenna in FIG. 4) and ANT2 (corresponding to the ninth antenna in FIG. 4) and the radio frequency circuit is far, the radio frequency circuit is arranged on a printed circuit board (PCB) board, and the original line (dashed part) has large wiring loss, thereby causing the signals transmitted by ANT4 and ANT2 to be poorer than the performance of other antennas. By directly connecting to the PA2 of the second radio frequency module through the first switch and connecting to ANT2 and ANT4 (solid part) through the second switch module, the path loss caused by the radio frequency wiring can be reduced, the problem of unbalanced antenna performance can be solved, and the antenna switching performance can be optimized. At this time, the first switch module in FIG. 5 is the seventh switch 72 and the ninth switch 74 in FIG. 4, and the second switch module is the sixth switch 71 and the eighth switch 73 in FIG. 4.

[0088] Optionally, in an embodiment of the present application, as shown in FIGS. 1, 3 and 4, the first transmitting port 11 can be in communication with the first radio frequency module 21 or the second radio frequency module 22. When the first transmitting port 11 is in communication with the first radio frequency module 21, the first radio frequency signal can be transmitted through the first antenna array 31, and when the first transmitting port 11 is in communication with the second radio frequency module 22, the first radio frequency signal can be transmitted through the second antenna array 32.

[0089] The second transmitting port 12 can be in communication with the first radio frequency module 21 or the second radio frequency module 22, and when the second transmitting port 12 is in communication with the first radio frequency module 21, the second radio frequency signal can be transmitted through the first antenna array 31, and when the second transmitting port 12 is in communication with the second radio frequency module 22, the second radio frequency signal can be transmitted through the second antenna array 32.

[0090] The first transmitting port 11 and the second transmitting port 12 can also transmit signals at the same time, and in this case, the first transmitting port 11 transmits signals through the first antenna array 31, and the second transmitting port 12 transmits signals through the second antenna array 32, or the first transmitting port 11 transmits signals through the second antenna array 32, and the second transmitting port 12 transmits signals through the first antenna array 31.

[0091] The embodiment of the present application also provides an electronic device comprising the above radio frequency circuit, and through the above radio frequency circuit, the first transmitting port and / or the second transmitting port can be in communication with different radio frequency modules by combining different antenna layouts, different radio frequency modules can be selected to realize antenna switching, path loss caused by radio frequency wiring is reduced, and then the problem of unbalanced antenna performance is solved, and the antenna switching performance is improved.

[0092] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0093] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make other changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to cover the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0094] Finally, it should also be noted that in this document, relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0095] The above described is the preferred embodiment of the present application, it should be pointed out that for the ordinary person in the art, without departing from the principles described in the present application under the premise that can also be made several improvements and refinements, these improvements and refinements are also within the scope of the present application.

Claims

1. A radio frequency circuit, comprising: Radio frequency transceiver (1), including a first transmit port (11); A first radio frequency module (21) is connected to a first antenna array (31); The second radio frequency module (22) is connected to the second radio frequency array (32); The first switch (4) has its first input terminal connected to the first transmit port (11) and its two output terminals connected to the first radio frequency module (21) and the second radio frequency module (22), respectively. When the first switch (4) is in the first state, the first transmitting port (11) is connected to the first radio frequency module (21); when the first switch (4) is in the second state, the first transmitting port (11) is connected to the second radio frequency module (22).

2. The radio frequency circuit according to claim 1, wherein, The radio frequency transceiver (1) further includes: a second transmit port (12); The second input terminal of the first switch (4) is connected to the second transmitting port (12); When the first switch (4) is in the first state, the second transmitting port (12) is connected to the second radio frequency module (22); when the first switch (4) is in the second state, the second transmitting port (12) is connected to the first radio frequency module (21).

3. The radio frequency circuit according to claim 2 further includes: The third radio frequency module (23) and the fourth radio frequency module (24); The radio frequency transceiver (1) further includes: a first receiving port (13), a second receiving port (14), a third receiving port (15), and a fourth receiving port (16); The first receiving port (13) is connected to the first radio frequency module (21), the second receiving port (14) is connected to the second radio frequency module (22), the third receiving port (15) is connected to the third radio frequency module (23), and the fourth receiving port (16) is connected to the fourth radio frequency module (24). Among them, the first radio frequency module (21) and the second radio frequency module (22) are radio frequency transceiver modules, and the third radio frequency module (23) and the fourth radio frequency module (24) are radio frequency receiving modules.

4. The radio frequency circuit according to claim 3, wherein, The first antenna array (31) includes three antennas, the second antenna array (32) includes one antenna, and the radio frequency circuit further includes a second switch (5); The second radio frequency module (22) is connected to the antenna in the second antenna array (32); When transmitting a signal through the first radio frequency module (21), the first radio frequency module (21) connects to one of the antennas in the first antenna array (31) through the second switch (5); when receiving signals synchronously, the second switch (5) controls the first radio frequency module (21), the third radio frequency module (23) and the fourth radio frequency module (24) to connect to one of the antennas in the first antenna array (31) respectively.

5. The radio frequency circuit according to claim 4, wherein, The second switch (5) is a three-pole three-throw switch; When a signal is transmitted through the first radio frequency module (21), one of the throw terminals of the second switch (5) is connected to a common terminal; When the four antenna signals are received synchronously, the three throw terminals of the second switch (5) are connected to the three common terminals.

6. The radio frequency circuit according to claim 3, wherein, The first antenna array (31) includes a third antenna, a fourth antenna and a fifth antenna, the second antenna array (32) includes a sixth antenna, and the radio frequency circuit further includes a third switch (61), a fourth switch (62) and a fifth switch (63); The second radio frequency module (22) is connected to the sixth antenna; The input terminal of the third switch (61) is connected to the first radio frequency module (21), and the multiple output terminals of the third switch (61) are respectively connected to the third antenna through the fifth switch (63), connected to the fourth antenna through the fourth switch (62), and directly connected to the fifth antenna.

7. The radio frequency circuit according to claim 6, wherein, The third switch (61) is a single-pole triple-throw switch, and the fourth switch (62) and the fifth switch (63) are single-pole double-throw switches; The common terminal of the third switch (61) is connected to the first radio frequency module (21), the first throw terminal of the third switch (61) is connected to the fifth antenna, the second throw terminal of the third switch (61) is connected to the first throw terminal of the fourth switch (62), and the third throw terminal of the third switch (61) is connected to the first throw terminal of the fifth switch (63). The second throw terminal of the fourth switch (62) is connected to the third radio frequency module (23), and the common terminal of the fourth switch (62) is connected to the fourth antenna; The second throw terminal of the fifth switch (63) is connected to the fourth radio frequency module (24), and the common terminal of the fifth switch (63) is connected to the third antenna.

8. The radio frequency circuit according to claim 7, wherein, When transmitting a signal through the first radio frequency module (21), the first radio frequency module (21) is connected to the fifth antenna through the third switch (61), or the first radio frequency module (21) is connected to the fourth antenna through the third switch (61) and the fourth switch (62), or the first radio frequency module (21) is connected to the third antenna through the third switch (61) and the fifth switch (63); When the four antenna signals are received synchronously, the first radio frequency module (21) is connected to the fifth antenna through the third switch (61), the second radio frequency module (22) is connected to the sixth antenna, the third radio frequency module (23) is connected to the fourth antenna through the fourth switch (62), and the fourth radio frequency module (24) is connected to the third antenna through the fifth switch (63).

9. The radio frequency circuit according to claim 3, wherein, The first antenna array (31) includes a seventh antenna and an eighth antenna, the second antenna array (32) includes a ninth antenna and a tenth antenna, and the radio frequency circuit further includes a sixth switch (71), a seventh switch (72), an eighth switch (73), and a ninth switch (74); The input terminal of the sixth switch (71) is connected to the second radio frequency module (22), and the two output terminals of the sixth switch (71) are respectively connected to the ninth antenna through the eighth switch (73) and directly connected to the tenth antenna; The input terminal of the seventh switch (72) is connected to the first radio frequency module (21), and the two output terminals of the seventh switch (72) are respectively connected to the seventh antenna through the ninth switch (74) and directly connected to the eighth antenna.

10. The radio frequency circuit according to claim 9, wherein, The sixth switch (71), the seventh switch (72), the eighth switch (73), and the ninth switch (74) are all single-pole double-throw switches; The common terminal of the sixth switch (71) is connected to the second radio frequency module (22), the first throw terminal of the sixth switch (71) is connected to the tenth antenna, the second throw terminal of the sixth switch (71) is connected to the first throw terminal of the eighth switch (73), the second throw terminal of the eighth switch (73) is connected to the third radio frequency module (23), and the common terminal of the eighth switch (73) is connected to the ninth antenna. The common terminal of the seventh switch (72) is connected to the first radio frequency module (21), the first throw terminal of the seventh switch (72) is connected to the eighth antenna, the second throw terminal of the seventh switch (72) is connected to the first throw terminal of the ninth switch (74), the second throw terminal of the ninth switch (74) is connected to the fourth radio frequency module (24), and the common terminal of the ninth switch (74) is connected to the seventh antenna.

11. The radio frequency circuit according to claim 10, wherein, When transmitting a signal via the second radio frequency module (22), the second radio frequency module (22) is connected to the tenth antenna via the sixth switch (71), or the second radio frequency module (22) is connected to the ninth antenna via the sixth switch (71) and the eighth switch (73); and / or When transmitting a signal through the first radio frequency module (21), the first radio frequency module (21) is connected to the eighth antenna through the seventh switch (72), or the first radio frequency module (21) is connected to the seventh antenna through the seventh switch (72) and the ninth switch (74).

12. The radio frequency circuit according to claim 10, wherein, When the four antenna signals are received synchronously, the first radio frequency module (21) is connected to the eighth antenna through the seventh switch (72), the second radio frequency module (22) is connected to the tenth antenna through the sixth switch (71), the third radio frequency module (23) is connected to the ninth antenna through the eighth switch (73), and the fourth radio frequency module (24) is connected to the seventh antenna through the ninth switch (74).

13. An electronic device comprising a radio frequency circuit as claimed in any one of claims 1 to 12.