WO2021104429A1

WO2021104429A1 - Radio frequency circuit and electronic device

Info

Publication number: WO2021104429A1
Application number: PCT/CN2020/132153
Authority: WO
Inventors: 谢政男; 文洲
Original assignee: 维沃移动通信有限公司
Priority date: 2019-11-29
Filing date: 2020-11-27
Publication date: 2021-06-03
Also published as: CN110943757A; CN110943757B

Abstract

Disclosed are a radio frequency circuit and an electronic device. The radio frequency circuit comprises a transceiver, and a first receiving path, a first transmitting path, a second transmitting path, a second receiving path, a third receiving path and a fourth receiving path which are separately connected to the transceiver. The first receiving path comprises a first receiving circuit, a first double-pole-double-throw switch and a first antenna group which are connected in sequence; the first antenna group comprises a first antenna and a second antenna; the first transmitting path comprises a first transmitting circuit, the first double-pole-double-throw switch and the first antenna group which are connected in sequence; the second transmitting path comprises a second transmitting circuit, a second double-pole-double-throw switch and a second antenna group which are connected in sequence; the second antenna group comprises a third antenna and a fourth antenna; and the second receiving path comprises a second receiving circuit, the second double-pole-double-throw switch and the second antenna group which are connected in sequence.

Description

RF circuit and electronic equipment

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 201911207601.9 filed in China on November 29, 2019, the entire content of which is incorporated herein by reference.

Technical field

The present invention relates to the technical field of radio frequency front ends, in particular to a radio frequency circuit and electronic equipment.

Background technique

With the widespread popularity of mobile smart terminals, users' demands for data traffic continue to increase. Generation four (4 ^th, 4G) networks and broadband multimedia applied, the rate of 100M ~ 1Gbps, fifth generation (5 ^th, 5G) a new air interface (New Radio, NR) the peak rate up to 20Gbps, lift rate requirements 5G has 4*4MIMO (Multiple Input Multiple Output) technology. At present, the operating frequency and bandwidth required for 5G mobile electronic devices are getting higher and higher, resulting in large component loss and poor isolation.

Summary of the invention

The embodiments of the present invention provide a radio frequency circuit and electronic equipment to solve the problems of large loss and poor isolation of currently designed radio frequency circuit elements.

In order to solve the above technical problems, the embodiments of the present invention are implemented as follows:

In the first aspect, an embodiment of the present invention provides a radio frequency circuit, which is applied to an electronic device that supports one-channel transmission and four-channel reception function or two-channel transmission and four-channel reception function; the radio frequency circuit includes a transceiver, and is connected to the transceiver respectively. The first receiving path, the first transmitting path, the second transmitting path, the second receiving path, the third receiving path, and the fourth receiving path to which the device is connected; where:

The first receiving path includes a first receiving circuit, a first double-pole double-throw switch, and a first antenna group connected in sequence; the first antenna group includes a first antenna and a second antenna;

The first transmission path includes a first transmission circuit, the first double-pole double-throw switch, and the first antenna group connected in sequence;

The second transmission path includes a second transmission circuit, a second double-pole double-throw switch, and the second antenna group connected in sequence; the second antenna group includes a third antenna and a fourth antenna;

The second receiving path includes a second receiving circuit, the second double-pole double-throw switch, and the second antenna group connected in sequence;

The third receiving path includes a third receiving circuit, the first double-pole double-throw switch, and the first antenna group connected in sequence;

The fourth receiving path includes a fourth receiving circuit, the second double-pole double-throw switch, and the second antenna group connected in sequence.

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

In the embodiment of the present invention, the first antenna group is connected by using a double-pole double-throw switch (DPDT) in the first transmitting path, the first receiving path, and the third receiving path. The fourth receiving path uses a double-pole double-throw switch (DPDT) to connect to the second antenna group. Because the component loss of DPDT is small, the use of DPDT in the radio frequency circuit can effectively reduce the components caused by using other switches (such as 3P3T) In addition, because the DPDT has fewer switching paths and better isolation, it can effectively reduce signal interference; in addition, due to the low complexity of the radio frequency circuit, the circuit winding is less, Therefore, the path loss caused by the long traces between the paths is avoided, the cost is reduced, and the reliability of the circuit is improved. Furthermore, based on the above advantages, the radio frequency circuit can also maintain the electronic equipment to transmit all the way. Support for four-way receiving function or two-way transmitting and four-way receiving function.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Fig. 1 is a schematic structural diagram of a radio frequency circuit in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a radio frequency circuit in another embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a radio frequency circuit in another embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a radio frequency circuit in another embodiment of the present invention.

Fig. 5 is a schematic structural diagram of an electronic device in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of a radio frequency circuit in an embodiment of the present invention. The radio frequency circuit includes a transceiver 10, and a first receiving path, a first transmitting path, a second transmitting path, a second receiving path, a third receiving path, and a fourth receiving path respectively connected to the transceiver 10; Shown:

The first receiving path includes a first receiving circuit 110, a first double-pole double-throw switch DPDT-1, and a first antenna group 111 connected in sequence; the first antenna group 111 includes a first antenna ANT1 and a second antenna ANT2;

The first transmission path includes a first transmission circuit 120, a first double-pole double-throw switch DPDT-1, and a first antenna group 111 connected in sequence;

The second transmitting path includes a second transmitting circuit 130, a second double-pole double-throw switch DPDT-2, and a second antenna group 131 connected in sequence; the second antenna group 131 includes a third antenna ANT3 and a fourth antenna ANT4;

The second receiving path includes a second receiving circuit 140, a second double-pole double-throw switch DPDT-2, and a second antenna group 131 connected in sequence;

The third receiving path includes a third receiving circuit 150, a first double-pole double-throw switch DPDT-1, and a first antenna group 111 connected in sequence;

The fourth receiving path includes a fourth receiving circuit 160, a second double-pole double-throw switch DPDT-2, and a second antenna group 131 connected in sequence.

In the embodiment of the present invention, the first antenna group is connected by using a double-pole double-throw switch (DPDT) in the first transmitting path, the first receiving path, and the third receiving path. A double-pole double-throw switch (DPDT) is used to connect the second antenna group in the four receiving path. Because the component difference of DPDT is small, the use of DPDT in the radio frequency circuit can effectively reduce the component difference caused by using other switches (such as 3P3T) Therefore, because DPDT has fewer switching paths and better isolation, it can effectively reduce signal interference. In addition, due to the low complexity of the radio frequency circuit, the circuit winding is less, so It avoids the path loss caused by the long traces between the paths, reduces the cost, and improves the reliability of the circuit. Furthermore, based on the above advantages, the radio frequency circuit can also maintain the electronic equipment to transmit four channels. Support for two-way receiving function or two-way transmitting and four-way receiving function.

Fig. 2 is a schematic structural diagram of a radio frequency circuit in another embodiment of the present invention. In one embodiment, as shown in FIG. 2, the first receiving circuit 110 includes a first amplifier LNA1, a first single-pole double-throw switch SW1, and a first filter Filter1 connected in sequence; the first filter Filter1 and the first double-pole Double throw switch DPDT-1 connection;

The first transmitting circuit 120 includes a second amplifier PA1, a first power combiner1, a first single-pole double-throw switch SW1, and a first filter Filter1 connected in sequence;

The second transmitting circuit 130 includes a third amplifier PA2, a second single-pole double-throw switch SW2, a third single-pole double-throw switch SW3, and a second filter Filter2 connected in sequence; the second filter Filter2 and the second double-pole double-throw switch DPDT -2 connection;

The second receiving circuit 140 includes a fourth amplifier LNA2, a third single-pole double-throw switch SW3, and a second filter Filter2 connected in sequence;

The third receiving circuit 150 includes a fifth amplifier LNA3 and a third filter Filter3 connected in sequence; the third filter Filter3 is connected to the first double-pole double-throw switch DPDT-1;

The fourth receiving circuit 160 includes a sixth amplifier LNA4 and a fourth filter Filter4 connected in sequence; the fourth filter Filter4 is connected to the second double-pole double-throw switch DPDT-2.

In one embodiment, when the electronic device supports one-channel transmission and four-channel reception functions, the signal received by the transceiver 10 is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first transmission path, and, through the second transmission path Transmit to the first antenna ANT1 or the second antenna ANT2; or, the signal received by the transceiver 10 is transmitted to the third antenna ANT3 or the fourth antenna ANT4 through the second transmission path.

In one embodiment, when the electronic device supports the two-channel transmission and four-channel reception function, the signal received by the transceiver 10 is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first transmission path, and, through the second transmission The path is transmitted to the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, or the fourth antenna ANT4.

In one embodiment, the signal received by the first antenna ANT1 is transmitted to the transceiver 10 through the first receiving path or the third receiving path; the signal received by the second antenna ANT2 is transmitted to the transceiver 10 through the first receiving path or the third receiving path 10; The signal received by the third antenna ANT3 is transmitted to the transceiver 10 through the second receiving path or the fourth receiving path; the signal received by the fourth antenna ANT4 is transmitted to the transceiver 10 through the second receiving path or the fourth receiving path.

Hereinafter, a plurality of embodiments are used to illustrate the signal receiving and sending path of the radio frequency circuit provided by the present invention.

In one embodiment, as shown in FIG. 2 (the transceiver 10 is not shown in FIG. 2), the right arrow in the figure indicates the direction of the signal in each transmission path. The left arrow in the figure indicates the direction of the signal in the receiving path.

In the case that the electronic device supports one-way transmission and four-way reception functions, the signal received by the transceiver 10 is transmitted to the first combiner Power Combiner 1 through the second amplifier PA1, and at the same time, the signal received by the transceiver 10 is transmitted to the first amplifier PA2 through the third amplifier PA2. The second single-pole double-throw switch SW2 is then switched from the second single-pole double-throw switch SW2 to the first combiner Power Combiner1. After the above two signals are combined by the first combiner Power Combiner1, they are transmitted from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1 to the first filter Filter1 After being filtered by the first filter Filter1, it is transmitted to the first double-pole double-throw switch DPDT-1, and then the signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1.

Alternatively, the signal received by the transceiver 10 is transmitted to the second single-pole double-throw switch SW2 through the third amplifier PA2, and then is switched from the second single-pole double-throw switch SW2 to the third single-pole double-throw switch SW3, and then from the third single-pole double-throw switch SW3. SW3 is transmitted to the second filter Filter2, which is filtered by the second filter Filter2 and transmitted to the second double-pole double-throw switch DPDT-2, and then the signal is transmitted to the third antenna through the second double-pole double-throw switch DPDT-2 ANT3 or fourth antenna ANT4.

In the case that the electronic device supports two-channel transmission and four-channel reception, the signal received by the transceiver 10 is transmitted to the first combiner Power Combiner1 through the second amplifier PA1, and then transmitted to the first single pole by the first combiner Power Combiner1 The double-throw switch SW1 is then transmitted from the first single-pole double-throw switch SW1 to the first filter Filter1, and then filtered by the first filter Filter1 and transmitted to the first double-pole double-throw switch DPDT-1, and then passes through the first double-pole double-throw switch DPDT-1. The double throw switch DPDT-1 transmits the signal to the first antenna ANT1 or the second antenna ANT2.

At the same time, the signal received by the transceiver 10 is transmitted to the second single-pole double-throw switch SW2 via the third amplifier PA2. After the second single-pole double-throw switch SW2 receives the signal, it can transmit the signal according to the following path: first switch to the first combiner Power Combiner1, from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from The first single-pole double-throw switch SW1 is transmitted to the first filter Filter1, filtered by the first filter Filter1, and then transmitted to the first double-pole double-throw switch DPDT-1, and then the first double-pole double-throw switch DPDT-1 The signal is transmitted to the first antenna ANT1 or the second antenna ANT2; or, first switch to the third SPDT switch SW3, then the third SPDT switch SW3 is transmitted to the second filter Filter2, and then the second filter Filter2 After filtering, it is transmitted to the second double-pole double-throw switch DPDT-2, and then the signal is transmitted to the third antenna ANT3 or the fourth antenna ANT4 through the second double-pole double-throw switch DPDT-2.

In the radio frequency circuit shown in Figure 2, whether the electronic device supports one-channel transmission and four-channel reception function or two-channel transmission and four-channel reception function, the signal received by each antenna can be transmitted according to the following path: the signal received by the first antenna ANT1 Transfer to the first double-pole double-throw switch DPDT-1. After the first double-pole double-throw switch DPDT-1 receives the signal, it can transmit the signal according to the following path: first switch to the third filter Filter3, then filter the signal by the third filter Filter3 and transmit the signal to the fifth amplifier LNA3, and then The signal is amplified by the fifth amplifier LNA3 and transmitted to the transceiver 10; or, it is first switched to the first filter Filter1, and then filtered by the first filter Filter1, the signal is transmitted to the first single-pole double-throw switch SW1, and then the first single-pole double-throw switch SW1 A single-pole double-throw switch SW1 is switched to the first amplifier LNA1, and the signal is amplified and transmitted to the transceiver 10 through the first amplifier LNA1.

The signal received by the second antenna ANT2 is transmitted to the first double pole double throw switch DPDT-1. After the first double-pole double-throw switch DPDT-1 receives the signal, it can transmit the signal according to the following path: first switch to the third filter Filter3, then filter the signal by the third filter Filter3 and transmit the signal to the fifth amplifier LNA3, and then The signal is amplified by the fifth amplifier LNA3 and transmitted to the transceiver 10; or, it is first switched to the first filter Filter1, and then filtered by the first filter Filter1, the signal is transmitted to the first single-pole double-throw switch SW1, and then the first single-pole double-throw switch SW1 A single-pole double-throw switch SW1 is switched to the first amplifier LNA1, and the signal is amplified and transmitted to the transceiver 10 through the first amplifier LNA1.

The signal received by the third antenna ANT3 is transmitted to the second double-pole double-throw switch DPDT-2. After the second double-pole double-throw switch DPDT-2 receives the signal, it can transmit the signal according to the following path: first switch to the fourth filter Filter4, then filter the fourth filter Filter4 and transmit the signal to the sixth amplifier LNA4, and then The signal is amplified by the sixth amplifier LNA4 and transmitted to the transceiver 10; or, the signal is first switched to the second filter Filter2, and then filtered by the second filter Filter2, and the signal is transmitted to the third single-pole double-throw switch SW3, and then the third single-pole double-throw switch SW3 The three single-pole double-throw switch SW3 is switched to the fourth amplifier LNA2, and the signal is amplified and transmitted to the transceiver 10 through the fourth amplifier LNA2.

The signal received by the fourth antenna ANT4 is transmitted to the second double pole double throw switch DPDT-2. After the second double-pole double-throw switch DPDT-2 receives the signal, it can transmit the signal according to the following path: first switch to the fourth filter Filter4, then filter the fourth filter Filter4 and transmit the signal to the sixth amplifier LNA4, and then The signal is amplified by the sixth amplifier LNA4 and transmitted to the transceiver 10; or, the signal is first switched to the second filter Filter2, and then filtered by the second filter Filter2, and the signal is transmitted to the third single-pole double-throw switch SW3, and then the third single-pole double-throw switch SW3 The three single-pole double-throw switch SW3 is switched to the fourth amplifier LNA2, and the signal is amplified and transmitted to the transceiver 10 through the fourth amplifier LNA2.

In the above embodiment, the second transmission path has fewer circuit elements, so that the path loss of the signal transmitted to the third antenna ANT3 or the fourth antenna ANT4 through the second transmission path is small, and the cost is also saved. In addition, in actual scenarios, experiments have shown that the circuit structure shown in this embodiment can increase the power of the signal transmitted to the first antenna ANT1 or the second antenna ANT2 by 3dB when the electronic device supports one-way transmission and four-way reception functions. (For example, from the original 23dB to 26dB), the output power of the radio frequency circuit is effectively improved.

Fig. 3 is a schematic structural diagram of a radio frequency circuit in another embodiment of the present invention. In an embodiment, as shown in FIG. 3 (transceiver 10 is not shown in FIG. 3), a fourth single-pole double-throw switch SW4 is also connected between the second amplifier PA1 and the first combiner Power Combiner1; A second combiner Power Combiner2 is also connected between the two single-pole double-throw switch SW2 and the third single-pole double-throw switch SW3. The arrow to the right in Figure 3 indicates the direction of the signal in each transmission path. The leftward arrow in Figure 3 indicates the direction of the signal in each receiving path.

In the case that the electronic device supports one-way transmission and four-way reception functions, the signal received by the transceiver 10 is transmitted to the fourth single-pole double-throw switch SW4 through the second amplifier PA1, and then the fourth single-pole double-throw switch SW4 is switched to the first combined circuit At the same time, the signal received by the transceiver 10 is transmitted to the second single-pole double-throw switch SW2 through the third amplifier PA2, and then is switched from the second single-pole double-throw switch SW2 to the first combiner Power Combiner1. After the above two signals are combined by the first combiner Power Combiner1, they are transmitted from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1 to the first filter Filter1 After being filtered by the first filter Filter1, it is transmitted to the first double-pole double-throw switch DPDT-1, and then the signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1.

Or, the signal received by the transceiver 10 is transmitted to the fourth single-pole double-throw switch SW4 through the second amplifier PA1, and then is switched by the fourth single-pole double-throw switch SW4 to the second combiner Power Combiner2, and at the same time, the signal received by the transceiver 10 It is transmitted to the second single-pole double-throw switch SW2 through the third amplifier PA2, and then switched from the second single-pole double-throw switch SW2 to the second combiner Power Combiner2. After the above two signals are combined by the second combiner Power Combiner2, they are transmitted from the second combiner Power Combiner2 to the third single-pole double-throw switch SW3, and then from the third single-pole double-throw switch SW3 to the second filter Filter2 , So as to be filtered by the second filter Filter2 and transmitted to the second double-pole double-throw switch DPDT-2, and then the signal is transmitted to the third antenna ANT3 or the fourth antenna ANT4 through the second double-pole double-throw switch DPDT-2.

In the case that the electronic device supports the two-way transmission and four-way reception function, the signal received by the transceiver 10 is transmitted to the fourth single-pole double-throw switch SW4 through the second amplifier PA1. After the fourth single-pole double-throw switch SW4 receives the signal, it can follow The signal is transmitted through the following path: first switch to the first combiner Power Combiner1, then from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1 to the first filter Filter1 is filtered by the first filter Filter1 and then transmitted to the first double-pole double-throw switch DPDT-1, and then transmits the signal to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1; Or, first switch to the second combiner Power Combiner2, then from the second combiner Power Combiner2 to the third single-pole double-throw switch SW3, and then from the third single-pole double-throw switch SW3 to the second filter Filter2, thus After filtering by the second filter Filter2, it is transmitted to the second double-pole double-throw switch DPDT-2, and then the signal is transmitted to the third antenna ANT3 or the fourth antenna ANT4 through the second double-pole double-throw switch DPDT-2.

At the same time, the signal received by the transceiver 10 is transmitted to the second single-pole double-throw switch SW2 through the third amplifier PA2. After receiving the signal, the second single-pole double-throw switch SW2 can transmit the signal according to the following path: first switch to the first combiner Power Combiner1 is then transmitted from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1 to the first filter Filter1, and then transmitted to the first filter Filter1 after filtering. The first double-pole double-throw switch DPDT-1 then transmits the signal to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1; or, first switches to the second combiner Power Combiner2, Then it is transmitted from the second combiner Power Combiner2 to the third single-pole double-throw switch SW3, and then from the third single-pole double-throw switch SW3 to the second filter Filter2, which is filtered by the second filter Filter2 and transmitted to the second double The double-pole double-throw switch DPDT-2 transmits the signal to the third antenna ANT3 or the fourth antenna ANT4 through the second double-pole double-throw switch DPDT-2.

In the radio frequency circuit shown in Figure 3, whether the electronic device supports one-channel transmission and four-channel reception function or two-channel transmission and four-channel reception function, the signal received by each antenna can be transmitted according to the following path: the signal received by the first antenna ANT1 Transfer to the first double-pole double-throw switch DPDT-1. After the first double-pole double-throw switch DPDT-1 receives the signal, it can transmit the signal according to the following path: first switch to the third filter Filter3, then filter the signal by the third filter Filter3 and transmit the signal to the fifth amplifier LNA3, and then The signal is amplified by the fifth amplifier LNA3 and transmitted to the transceiver 10; or, it is first switched to the first filter Filter1, and then filtered by the first filter Filter1, the signal is transmitted to the first single-pole double-throw switch SW1, and then the first single-pole double-throw switch SW1 A single-pole double-throw switch SW1 is switched to the first amplifier LNA1, and the signal is amplified and transmitted to the transceiver 10 through the first amplifier LNA1.

In one embodiment, the radio frequency circuit shown in FIG. 4 is consistent with the radio frequency circuit shown in FIG. 3 in terms of circuit connection and signal transmission direction, and therefore will not be repeated. In the radio frequency circuit shown in Figure 4, the circuit has a higher degree of integration, which reduces the circuit complexity. At the same time, the transmission and reception circuits are integrated on one module to avoid the winding between different modules. The path loss makes the radio frequency circuit highly reliable.

Fig. 5 is a schematic structural diagram of an electronic device in an embodiment of the present invention. Please refer to FIG. 5, the electronic device 500 includes the radio frequency circuit 510 provided in any of the above embodiments, and the circuit structure of the radio frequency circuit 510 has been described in detail in the above embodiments, so it will not be repeated. In addition, the electronic device 500 supports one-channel transmission and four-channel reception function or two-channel transmission and four-channel reception function.

In one embodiment, the transmission mode of the signal received by the transceiver 10 as shown in FIG. 2 (the transceiver 10 is not shown in FIG. 2) is as follows: in the case that the electronic device 500 supports the functions of one-channel transmission and four-channel reception, The signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first transmission path, and transmitted to the first antenna ANT1 or the second antenna ANT2 through the second transmission path; or, transmitted to the third antenna ANT3 through the second transmission path Or the fourth antenna ANT4.

Among them, the signal received by the transceiver 10 is transmitted to the first combiner Power Combiner1 through the second amplifier PA1, and at the same time, the signal received by the transceiver 10 is transmitted to the second single-pole double-throw switch SW2 through the third amplifier PA2, and then transmitted by the second single-pole double-throw switch SW2. The single-pole double-throw switch SW2 switches to the first combiner Power Combiner1. After the above two signals are combined by the first combiner Power Combiner1, they are transmitted from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1 to the first filter Filter1 After being filtered by the first filter Filter1, it is transmitted to the first double-pole double-throw switch DPDT-1, and then the signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1.

In the case that the electronic device 500 supports two-channel transmission and four-channel reception, the signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first transmission path, and transmitted to the first antenna ANT1 or the second antenna ANT2 through the second transmission path. Antenna ANT2, third antenna ANT3, or fourth antenna ANT4.

The signal received by the transceiver 10 is transmitted to the first combiner Power Combiner1 through the second amplifier PA1, and then transmitted from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1. SW1 is transmitted to the first filter Filter1, and then filtered by the first filter Filter1 and transmitted to the first double-pole double-throw switch DPDT-1, and then the signal is transmitted to the first antenna through the first double-pole double-throw switch DPDT-1 ANT1 or second antenna ANT2.

In the radio frequency circuit shown in Figure 2, whether the electronic device supports one-channel transmission and four-channel reception function or two-channel transmission and four-channel reception function, the signal received by each antenna can be transmitted according to the following path: the signal received by the first antenna ANT1 Transmit to the transceiver 10 through the first receiving path or the third receiving path; the signal received by the second antenna ANT2 is transmitted to the transceiver 10 through the first receiving path or the third receiving path; the signal received by the third antenna ANT3 is transmitted through the second receiving path The signal received by the fourth antenna ANT4 is transmitted to the transceiver 10 through the second receiving path or the fourth receiving path.

Wherein, the signal received by the first antenna ANT1 is transmitted to the first double-pole double-throw switch DPDT-1. After the first double-pole double-throw switch DPDT-1 receives the signal, it can transmit the signal according to the following path: first switch to the third filter Filter3, then filter the signal by the third filter Filter3 and transmit the signal to the fifth amplifier LNA3, and then The signal is amplified by the fifth amplifier LNA3 and transmitted to the transceiver 10; or, it is first switched to the first filter Filter1, and then filtered by the first filter Filter1, the signal is transmitted to the first single-pole double-throw switch SW1, and then the first single-pole double-throw switch SW1 A single-pole double-throw switch SW1 is switched to the first amplifier LNA1, and the signal is amplified and transmitted to the transceiver 10 through the first amplifier LNA1.

In one embodiment, as shown in FIG. 3 (transceiver 10 is not shown in FIG. 3), the signal received by the transceiver 10 is transmitted in the following manner: in the case where the electronic device 500 supports one-channel transmission and four-channel reception functions, The signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first transmission path, and is transmitted to the first antenna ANT1 or the second antenna ANT2 through the second transmission path; or, the signal is transmitted to the third antenna through the first transmission path ANT3 or the fourth antenna ANT4, and transmit to the third antenna ANT3 or the fourth antenna ANT4 through the second transmission path.

Among them, the signal received by the transceiver 10 is transmitted to the fourth single-pole double-throw switch SW4 through the second amplifier PA1, and then the fourth single-pole double-throw switch SW4 is switched to the first combiner Power Combiner1. At the same time, the signal received by the transceiver 10 It is transmitted to the second single-pole double-throw switch SW2 through the third amplifier PA2, and then switched from the second single-pole double-throw switch SW2 to the first combiner Power Combiner1. After the above two signals are combined by the first combiner Power Combiner1, they are transmitted from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1 to the first filter Filter1 After being filtered by the first filter Filter1, it is transmitted to the first double-pole double-throw switch DPDT-1, and then the signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1.

Or, the signal received by the transceiver 10 is transmitted to the fourth single-pole double-throw switch SW4 through the second amplifier PA1, and then is switched by the fourth single-pole double-throw switch SW4 to the second combiner Power Combiner2, and at the same time, the signal received by the transceiver 10 It is transmitted to the second single-pole double-throw switch SW2 through the third amplifier PA2, and then switched from the second single-pole double-throw switch SW2 to the second combiner Power Combiner2. After the above two signals are combined by the second combiner Power Combiner2, The second combiner Power Combiner2 is transmitted to the third single-pole double-throw switch SW3, and then from the third single-pole double-throw switch SW3 to the second filter Filter2, which is filtered by the second filter Filter2 and transmitted to the second double-pole The double-throw switch DPDT-2, in turn, transmits the signal to the third antenna ANT3 or the fourth antenna ANT4 through the second double-pole double-throw switch DPDT-2.

In the case that the electronic device 500 supports the two-channel transmission and four-channel reception function, the signal is transmitted to the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, or the fourth antenna ANT4 through the first transmission path, and, through the second transmission The path is transmitted to the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, or the fourth antenna ANT4.

Among them, the signal received by the transceiver 10 is transmitted to the fourth single-pole double-throw switch SW4 through the second amplifier PA1. After receiving the signal, the fourth single-pole double-throw switch SW4 can transmit the signal according to the following path: first switch to the first combiner Power Combiner1 is then transmitted from the first combiner Power Combiner1 to the first single-pole double-throw switch SW1, and then from the first single-pole double-throw switch SW1 to the first filter Filter1, and then transmitted to the first filter Filter1 after filtering. The first double-pole double-throw switch DPDT-1 then transmits the signal to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1; or, first switches to the second combiner Power Combiner2, Then it is transmitted from the second combiner Power Combiner2 to the third single-pole double-throw switch SW3, and then from the third single-pole double-throw switch SW3 to the second filter Filter2, which is filtered by the second filter Filter2 and transmitted to the second double The double-pole double-throw switch DPDT-2 transmits the signal to the third antenna ANT3 or the fourth antenna ANT4 through the second double-pole double-throw switch DPDT-2.

In the radio frequency circuit shown in Figure 3, whether the electronic device supports one-channel transmission and four-channel reception function or two-channel transmission and four-channel reception function, the signal received by each antenna can be transmitted according to the following path: the signal received by the first antenna ANT1 Transmit to the transceiver 10 through the first receiving path or the third receiving path; the signal received by the second antenna ANT2 is transmitted to the transceiver 10 through the first receiving path or the third receiving path; the signal received by the third antenna ANT3 is transmitted through the second receiving path The signal received by the fourth antenna ANT4 is transmitted to the transceiver 10 through the second receiving path or the fourth receiving path.

The foregoing describes specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims may be performed in a different order than in the embodiments and still achieve desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown in order to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the scope of protection of the claims, and they all fall within the protection of the present invention.

Claims

A radio frequency circuit, which is applied to an electronic device that supports one-channel transmission and four-channel reception function or two-channel transmission and four-channel reception function; the radio frequency circuit includes a transceiver, and a first receiving channel and a first receiving channel respectively connected to the transceiver Transmission path, second transmission path, second reception path, third reception path and fourth reception path; among them:

The first receiving path includes a first receiving circuit, a first double-pole double-throw switch, and a first antenna group connected in sequence; the first antenna group includes a first antenna and a second antenna;

The first transmission path includes a first transmission circuit, the first double-pole double-throw switch, and the first antenna group connected in sequence;

The second transmission path includes a second transmission circuit, a second double-pole double-throw switch, and the second antenna group connected in sequence; the second antenna group includes a third antenna and a fourth antenna;

The second receiving path includes a second receiving circuit, the second double-pole double-throw switch, and the second antenna group connected in sequence;

The third receiving path includes a third receiving circuit, the first double-pole double-throw switch, and the first antenna group connected in sequence;

The fourth receiving path includes a fourth receiving circuit, the second double-pole double-throw switch, and the second antenna group connected in sequence.
The radio frequency circuit according to claim 1, wherein the first receiving circuit comprises a first amplifier, a first single-pole double-throw switch, and a first filter connected in sequence; the first filter and the first double Pole double throw switch connection;

The first transmitting circuit includes a second amplifier, a first combiner, the first single-pole double-throw switch, and the first filter connected in sequence;

The second transmitting circuit includes a third amplifier, a second single-pole double-throw switch, a third single-pole double-throw switch, and a second filter connected in sequence; the second filter is connected to the second double-pole double-throw switch ；

The second receiving circuit includes a fourth amplifier, the third single-pole double-throw switch, and the second filter connected in sequence;

The third receiving circuit includes a fifth amplifier and a third filter connected in sequence; the third filter is connected to the first double-pole double-throw switch;

The fourth receiving circuit includes a sixth amplifier and a fourth filter connected in sequence; the fourth filter is connected to the second double-pole double-throw switch.
The radio frequency circuit according to claim 2, wherein, in the case that the electronic device supports one-channel transmission and four-channel reception function, the signal received by the transceiver is transmitted to the first antenna through the first transmission path or The second antenna, and transmitting to the first antenna or the second antenna through the second transmission path; or,

The signal received by the transceiver is transmitted to the third antenna or the fourth antenna through the second transmission path.
The radio frequency circuit according to claim 2, wherein, in the case that the electronic device supports two-way transmission and four-way reception function, the signal received by the transceiver is transmitted to the first antenna through the first transmission path Or the second antenna, and transmitting to the first antenna, the second antenna, the third antenna, or the fourth antenna through the second transmission path.
3. The radio frequency circuit according to claim 2, wherein the signal received by the first antenna is transmitted to the transceiver through the first receiving path or the third receiving path;

The signal received by the second antenna is transmitted to the transceiver through the first receiving path or the third receiving path;

The signal received by the third antenna is transmitted to the transceiver through the second receiving path or the fourth receiving path;

The signal received by the fourth antenna is transmitted to the transceiver through the second receiving path or the fourth receiving path.
The radio frequency circuit according to claim 2, wherein a fourth single-pole double-throw switch is also connected between the second amplifier and the first combiner; the second single-pole double-throw switch is connected to the third single-pole double-throw switch. A second combiner is also connected between the single-pole double-throw switches.
The radio frequency circuit according to claim 6, wherein, in the case that the electronic device supports one-channel transmission and four-channel reception function, the signal received by the transceiver is transmitted to the first antenna through the first transmission path or The second antenna, and transmitting to the first antenna or the second antenna through the second transmission path; or,

The signal received by the transceiver is transmitted to the third antenna or the fourth antenna through the first transmission path, and transmitted to the third antenna or the fourth antenna through the second transmission path .
The radio frequency circuit according to claim 6, wherein, in the case that the electronic device supports two-way transmission and four-way reception function, the signal received by the transceiver is transmitted to the first antenna through the first transmission path , The second antenna, the third antenna, or the fourth antenna, and transmit to the first antenna, the second antenna, the third antenna, or the The fourth antenna.
The radio frequency circuit according to claim 6, wherein the signal received by the first antenna is transmitted to the transceiver through the first receiving path or the third receiving path;

The signal received by the second antenna is transmitted to the transceiver through the first receiving path or the third receiving path;

The signal received by the third antenna is transmitted to the transceiver through the second receiving path or the fourth receiving path;

The signal received by the fourth antenna is transmitted to the transceiver through the second receiving path or the fourth receiving path.
An electronic device comprising the radio frequency circuit according to any one of claims 1 to 9.