CN110943757B

CN110943757B - Radio frequency circuit and electronic equipment

Info

Publication number: CN110943757B
Application number: CN201911207601.9A
Authority: CN
Inventors: 谢政男; 文洲
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-08-27
Anticipated expiration: 2039-11-29
Also published as: CN110943757A; WO2021104429A1

Abstract

The embodiment of the invention discloses a radio frequency circuit and electronic equipment, and aims to solve the problems of large difference loss and poor isolation of currently designed radio frequency circuit elements. The radio frequency circuit includes: the transceiver, and the first receiving path, the first transmitting path, the second receiving path, the third receiving path and the fourth receiving path which are respectively connected with the transceiver. The double-pole double-throw switch is used in the first transmitting path, the first receiving path and the third receiving path to connect the first antenna group, and the double-pole double-throw switch is used in the second transmitting path, the second receiving path and the fourth receiving path to connect the second antenna group, so that the element difference loss caused by using other switches can be effectively reduced by using the double-pole double-throw switch in the radio frequency circuit because the element difference loss of the double-pole double-throw switch is small, and the signal transceiving performance is improved; meanwhile, the double-pole double-throw switch has few switching paths and better isolation, so that signal interference can be effectively reduced.

Description

Radio frequency circuit and electronic equipment

Technical Field

The present invention relates to the field of radio frequency front end technologies, and in particular, to a radio frequency circuit and an electronic device.

Background

With the great popularization of mobile intelligent terminals, the demand of users on data traffic is increasing. From 4G applied to multimedia and broadband, the rate is 100M-1 Gbps, and the peak rate can reach 20Gbps to 5GNR (new radio, new air interface), and the improvement of the rate requires that 5G has 4 × 4MIMO (Multiple Input Multiple Output) technology. At present, 5G mobile electronic devices require higher and higher operating frequency and larger bandwidth, which results in large component difference loss and poor isolation.

Disclosure of Invention

The embodiment of the invention provides a radio frequency circuit and electronic equipment, and aims to solve the problems of large difference loss and poor isolation of currently designed radio frequency circuit elements.

To solve the above technical problem, the embodiment of the present invention is implemented as follows:

in a first aspect, an embodiment of the present invention provides a radio frequency circuit, which is applied to an electronic device supporting one-path transmitting four-path receiving function or two-path transmitting four-path receiving function; the radio frequency circuit comprises a transceiver, a first receiving channel, a first transmitting channel, a second receiving channel, a third receiving channel and a fourth receiving channel which are respectively connected with the transceiver; wherein:

the first receiving path comprises a first receiving circuit, a first double-pole double-throw switch and a first antenna set 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 set which are connected in sequence;

the second transmitting path comprises a second transmitting circuit, a second double-pole double-throw switch and the second antenna group which are sequentially connected; the second antenna group comprises a third antenna and a fourth antenna;

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;

the third receiving path comprises a third receiving circuit, the first double-pole double-throw switch and the first antenna set which are connected in sequence;

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

In a second aspect, an embodiment of the present invention further provides an electronic device, including the radio frequency circuit according to the first aspect.

In the embodiment of the present invention, a double-pole double-throw switch (DPDT) is used in the first transmit path, the first receive path and the third receive path to connect with the first antenna group, and a double-pole double-throw switch (DPDT) is used in the second transmit path, the second receive path and the fourth receive path to connect with the second antenna group, so that the element difference loss caused by using other switches (such as 3P3T) can be effectively reduced by using the DPDT in the radio frequency circuit because the element difference loss of the DPDT is small, thereby improving the signal transceiving performance; meanwhile, as the DPDT has fewer switching paths and better isolation, the signal interference can be effectively reduced; in addition, the complexity of the radio frequency circuit is low, so that the circuit winding is less, the path loss caused by long wiring among all the channels is avoided, the cost is reduced, and the reliability of the circuit is improved; moreover, the radio frequency circuit can maintain the support of the electronic equipment on one-path transmitting four-path receiving function or two-path transmitting four-path receiving function on the basis of the advantages.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of an rf circuit according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an rf circuit according to another embodiment of the present invention.

Fig. 3 is a schematic diagram of an rf circuit according to another embodiment of the present invention.

Fig. 4 is a schematic diagram of an rf circuit according to another embodiment of the present invention.

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

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic diagram of an rf circuit according to an embodiment of the present invention. The radio frequency circuit comprises a transceiver 10, and a first receiving path, a first transmitting path, a second receiving path, a third receiving path and a fourth receiving path which are respectively connected with the transceiver 10; wherein, as shown in fig. 1:

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 ANT 2;

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 comprises a second transmitting circuit 130, a second double-pole double-throw switch DPDT-2 and a second antenna group 131 which are connected in sequence; the second antenna group 131 includes a third antenna ANT3 and a fourth antenna ANT 4;

the second receiving path comprises a second receiving circuit 140, a second double-pole double-throw switch DPDT-2 and a second antenna group 131 which are 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 set 131 connected in sequence.

In the embodiment of the invention, a double-pole double-throw switch (DPDT) is used in a first transmitting channel, a first receiving channel and a third receiving channel to connect a first antenna group, and a double-pole double-throw switch (DPDT) is used in a second transmitting channel, a second receiving channel and a fourth receiving channel to connect a second antenna group, so that the element difference loss caused by using other switches (such as 3P3T) can be effectively reduced by using the DPDT in a radio frequency circuit because the element difference loss of the DPDT is smaller, thereby improving the signal transceiving performance; meanwhile, as the DPDT has fewer switching paths and better isolation, the signal interference can be effectively reduced; in addition, the complexity of the radio frequency circuit is low, so that the circuit winding is less, the path loss caused by long wiring among all the channels is avoided, the cost is reduced, and the reliability of the circuit is improved; moreover, the radio frequency circuit can maintain the support of the electronic equipment on one-path transmitting four-path receiving function or two-path transmitting four-path receiving function on the basis of the advantages.

Fig. 2 is a schematic diagram of an rf circuit according to 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 Filter1 connected in sequence; the first Filter1 is connected with a first double-pole double-throw switch DPDT-1;

the first transmitting circuit 120 includes a second amplifier PA1, a first Combiner Power Combiner1, a first single-pole double-throw switch SW1 and a first Filter1 connected in sequence;

the second transmitting circuit 130 comprises a third amplifier PA2, a second single-pole double-throw switch SW2, a third single-pole double-throw switch SW3 and a second Filter2 which are connected in sequence; the second Filter2 is connected with a second double-pole double-throw switch DPDT-2;

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

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

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

In one embodiment, in the case where the electronic device supports a one-transmission four-reception function, a signal received by the transceiver 10 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; alternatively, 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, in the case where the electronic device supports a two-transmit four-receive function, a signal received by the transceiver 10 is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first transmit path, and is transmitted to the first antenna ANT1, the second antenna ANT2, the third antenna ANT3 or the fourth antenna ANT4 through the second transmit path.

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

The signal transceiving path of the rf circuit provided by the present invention is described below by using a plurality of embodiments.

In one embodiment, as shown in fig. 2 (transceiver 10 is not shown in fig. 2), the rightward arrows in the figure indicate the direction of signals in each transmit path. The left arrow in the figure indicates the direction of the signal in the receive path.

In the case that the electronic device supports a four-way transmission and reception function, the signal received by the transceiver 10 is transmitted to the first Combiner Power Combiner1 via the second amplifier PA1, and the signal received by the transceiver 10 is transmitted to the second single-pole double-throw switch SW2 via the third amplifier PA2, and then switched to the first Combiner Power Combiner1 by the second single-pole double-throw switch SW 2. The two signals are combined by the first Combiner Power Combiner1, transmitted to the first single-pole double-throw switch SW1 by the first Combiner Power Combiner1, transmitted to the first Filter1 by the first single-pole double-throw switch SW1, filtered by the first Filter1, transmitted to the first double-pole double-throw switch DPDT-1, and transmitted to the first antenna ANT1 or the second antenna ANT2 by the first double-pole double-throw switch DPDT-1.

Alternatively, the signal received by the transceiver 10 is transmitted to the second spdt switch SW2 through the third amplifier PA2, then switched to the third spdt switch SW3 by the second spdt switch SW2, and then transmitted to the second Filter2 by the third spdt switch SW3, so as to be filtered by the second Filter2 and transmitted to the second spdt-2, and then transmitted to the third antenna ANT3 or the fourth antenna ANT4 through the second spdt-2.

Under the condition that the electronic device supports the two-way transmitting and four-way receiving functions, the signal received by the transceiver 10 is transmitted to the first Combiner Power Combiner1 through the second amplifier PA1, then transmitted to the first single-pole double-throw switch SW1 through the first Combiner Power Combiner1, transmitted to the first Filter1 through the first single-pole double-throw switch SW1, filtered by the first Filter1, transmitted to the first double-pole double-throw switch DPDT-1, and then transmitted to the first antenna ANT1 or the second antenna ANT2 through the first double-pole double-throw switch DPDT-1.

Meanwhile, a signal received by the transceiver 10 is transmitted to the second single pole double throw switch SW2 via the third amplifier PA 2. The second single-pole double-throw switch SW2, upon receiving the signal, can transmit the signal according to the following path: firstly, the signals are switched to a first Combiner Power Combiner1, transmitted to a first single-pole double-throw switch SW1 by a first Combiner Power Combiner1, transmitted to a first Filter Filter1 by the first single-pole double-throw switch SW1, filtered by a first Filter Filter1 and transmitted to a first double-pole double-throw switch DPDT-1, and then transmitted to a first antenna ANT1 or a second antenna ANT2 by the first double-pole double-throw switch DPDT-1; or, the signal is switched to a third single-pole double-throw switch SW3, then transmitted to a second Filter2 through the third single-pole double-throw switch SW3, filtered by the second Filter2 and transmitted to a second double-pole double-throw switch DPDT-2, and then transmitted to a third antenna ANT3 or a fourth antenna ANT4 through the second double-pole double-throw switch DPDT-2.

In the rf circuit shown in fig. 2, no matter the electronic device supports one-way transmitting and four-way receiving function or two-way transmitting and four-way receiving function, signals received by each antenna can be transmitted according to the following paths: 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, the signal can be transmitted according to the following path: firstly, switching to a third Filter3, then transmitting the signal to a fifth amplifier LNA3 after filtering by a third Filter3, and then amplifying and transmitting the signal to the transceiver 10 by a fifth amplifier LNA 3; or, the signal is first switched to the first Filter1, then filtered by the first Filter1, transmitted to the first spdt switch SW1, and then switched to the first amplifier LNA1 by the first spdt switch SW1, and then amplified by the first amplifier LNA1 and transmitted to the transceiver 10.

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, the signal can be transmitted according to the following path: firstly, switching to a third Filter3, then transmitting the signal to a fifth amplifier LNA3 after filtering by a third Filter3, and then amplifying and transmitting the signal to the transceiver 10 by a fifth amplifier LNA 3; or, the signal is first switched to the first Filter1, then filtered by the first Filter1, transmitted to the first spdt switch SW1, and then switched to the first amplifier LNA1 by the first spdt switch SW1, and then amplified by the first amplifier LNA1 and transmitted to the transceiver 10.

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, the signal may be transmitted according to the following path: firstly, switching to a fourth Filter4, then transmitting the signal to a sixth amplifier LNA4 after filtering by a fourth Filter4, and then amplifying and transmitting the signal to the transceiver 10 by a sixth amplifier LNA 4; or, the signal is firstly switched to the second Filter2, then is filtered by the second Filter2 and transmitted to the third single-pole double-throw switch SW3, and then is switched to the fourth amplifier LNA2 by the third single-pole double-throw switch SW3, and then is amplified by the fourth amplifier LNA2 and transmitted to the transceiver 10.

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, the signal may be transmitted according to the following path: firstly, switching to a fourth Filter4, then transmitting the signal to a sixth amplifier LNA4 after filtering by a fourth Filter4, and then amplifying and transmitting the signal to the transceiver 10 by a sixth amplifier LNA 4; or, the signal is firstly switched to the second Filter2, then is filtered by the second Filter2 and transmitted to the third single-pole double-throw switch SW3, and then is switched to the fourth amplifier LNA2 by the third single-pole double-throw switch SW3, and then is amplified by the fourth amplifier LNA2 and transmitted to the transceiver 10.

In the above embodiment, the number of circuit elements of the second transmission path is small, so that the path loss of transmitting a signal 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 an actual scenario, experiments show that, in the circuit structure shown in this embodiment, when the electronic device supports a one-way transmission four-way reception function, the power of a signal transmitted to the first antenna ANT1 or the second antenna ANT2 can be increased by 3dB (e.g., from originally 23dB to 26dB), so that the output power of the radio frequency circuit is effectively increased.

Fig. 3 is a schematic diagram of an rf circuit according to another embodiment of the present invention. In one embodiment, as shown in fig. 3 (the 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 Combiner 1; a second Combiner Power Combiner2 is connected between the second single-pole double-throw switch SW2 and the third single-pole double-throw switch SW 3. The arrow to the right in fig. 3 indicates the direction of the signal in each transmit path. The left arrow in fig. 3 indicates the direction of the signal in each receiving path.

In the case where the electronic device supports a four-way transmission and reception function, the signal received by the transceiver 10 is transmitted to the fourth spdt switch SW4 via the second amplifier PA1, and then is switched to the first Combiner Power Combiner1 by the fourth spdt switch SW4, and meanwhile, the signal received by the transceiver 10 is transmitted to the second spdt switch SW2 via the third amplifier PA2, and then is switched to the first Combiner Power Combiner1 by the second spdt switch SW 2. The two signals are combined by the first Combiner Power Combiner1, transmitted to the first single-pole double-throw switch SW1 by the first Combiner Power Combiner1, transmitted to the first Filter1 by the first single-pole double-throw switch SW1, filtered by the first Filter1, transmitted to the first double-pole double-throw switch DPDT-1, and transmitted to the first antenna ANT1 or the second antenna ANT2 by the first double-pole double-throw switch DPDT-1.

Alternatively, the signal received by the transceiver 10 is transmitted to the fourth spdt switch SW4 through the second amplifier PA1, and then is switched to the second Combiner Power Combiner2 by the fourth spdt switch SW4, and at the same time, the signal received by the transceiver 10 is transmitted to the second spdt switch SW2 through the third amplifier PA2, and then is switched to the second Combiner Power Combiner2 by the second spdt switch SW 2. The two signals are combined by the second Combiner Power Combiner2, transmitted to the third single-pole double-throw switch SW3 by the second Combiner Power Combiner2, and transmitted to the second Filter2 by the third single-pole double-throw switch SW3, so as to be filtered by the second Filter2 and transmitted to the second double-pole double-throw switch DPDT-2, and then transmitted to the third antenna ANT3 or the fourth antenna ANT4 by the second double-pole double-throw switch DPDT-2.

In the case that the electronic device supports the two-way transmitting and four-way receiving function, the signal received by the transceiver 10 is transmitted to the fourth spdt switch SW4 via the second amplifier PA1, and after the signal is received by the fourth spdt switch SW4, the signal can be transmitted according to the following paths: firstly, the signals are switched to a first Combiner Power Combiner1, then transmitted to a first single-pole double-throw switch SW1 by a first Combiner Power Combiner1, transmitted to a first Filter Filter1 by the first single-pole double-throw switch SW1, filtered by a first Filter Filter1 and transmitted to a first double-pole double-throw switch DPDT-1, and then transmitted to a first antenna ANT1 or a second antenna ANT2 through the first double-pole double-throw switch DPDT-1; or, the first switch is switched to the second Combiner Power Combiner2, and then the second Combiner Power Combiner2 transmits the second signal to the third spdt switch SW3, and then the third spdt switch SW3 transmits the second signal to the second Filter2, so that the second Filter2 filters the second signal and transmits the second signal to the second spdt switch DPDT-2, and then the second spdt-2 transmits the signal to the third antenna ANT3 or the fourth antenna ANT 4.

Meanwhile, the signal received by the transceiver 10 is transmitted to the second spdt switch SW2 through the third amplifier PA2, and the signal received by the second spdt switch SW2 can be transmitted according to the following paths: firstly, the signals are switched to a first Combiner Power Combiner1, then transmitted to a first single-pole double-throw switch SW1 by a first Combiner Power Combiner1, transmitted to a first Filter Filter1 by the first single-pole double-throw switch SW1, filtered by a first Filter Filter1 and transmitted to a first double-pole double-throw switch DPDT-1, and then transmitted to a first antenna ANT1 or a second antenna ANT2 through the first double-pole double-throw switch DPDT-1; or, the first switch is switched to the second Combiner Power Combiner2, and then the second Combiner Power Combiner2 transmits the second signal to the third spdt switch SW3, and then the third spdt switch SW3 transmits the second signal to the second Filter2, so that the second Filter2 filters the second signal and transmits the second signal to the second spdt switch DPDT-2, and then the second spdt-2 transmits the signal to the third antenna ANT3 or the fourth antenna ANT 4.

In the rf circuit shown in fig. 3, no matter the electronic device supports one-way transmitting and four-way receiving function or two-way transmitting and four-way receiving function, signals received by each antenna can be transmitted through the following paths: 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, the signal can be transmitted according to the following path: firstly, switching to a third Filter3, then transmitting the signal to a fifth amplifier LNA3 after filtering by a third Filter3, and then amplifying and transmitting the signal to the transceiver 10 by a fifth amplifier LNA 3; or, the signal is first switched to the first Filter1, then filtered by the first Filter1, transmitted to the first spdt switch SW1, and then switched to the first amplifier LNA1 by the first spdt switch SW1, and then amplified by the first amplifier LNA1 and transmitted to the transceiver 10.

In an embodiment, the rf circuit shown in fig. 4 is consistent with the rf circuit shown in fig. 3 in terms of circuit connection and signal transmission direction, and therefore, the description thereof is omitted. In the rf circuit shown in fig. 4, the integration level of the circuit is high, which reduces the complexity of the circuit, and meanwhile, the transmitting and receiving circuits are integrated on one module, which avoids the path loss caused by the winding between different modules, so that the reliability of the rf circuit is high.

Fig. 5 is a schematic structural diagram of an electronic device in an embodiment of the invention. Referring to fig. 5, the electronic device 500 includes the radio frequency circuit 510 provided in any of the embodiments, and the circuit structure of the radio frequency circuit 510 has been described in detail in the embodiments, so that the description is omitted. Also, the electronic device 500 supports one-way transmit four-way receive function or two-way transmit four-way receive function.

In one embodiment, signals received by transceiver 10 as shown in FIG. 2 (transceiver 10 not shown in FIG. 2) are transmitted as follows: in the case where the electronic device 500 supports a one-transmission four-reception function, a 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, through the second transmission path to the third antenna ANT3 or the fourth antenna ANT 4.

The signal received by the transceiver 10 is transmitted to the first Combiner Power Combiner1 through the second amplifier PA1, and the signal received by the transceiver 10 is transmitted to the second spdt switch SW2 through the third amplifier PA2, and then switched to the first Combiner Power Combiner1 through the second spdt switch SW 2. The two signals are combined by the first Combiner Power Combiner1, transmitted to the first single-pole double-throw switch SW1 by the first Combiner Power Combiner1, transmitted to the first Filter1 by the first single-pole double-throw switch SW1, filtered by the first Filter1, transmitted to the first double-pole double-throw switch DPDT-1, and transmitted to the first antenna ANT1 or the second antenna ANT2 by the first double-pole double-throw switch DPDT-1.

In the case where the electronic device 500 supports the two-transmit four-receive function, a signal is transmitted to the first antenna ANT1 or the second antenna ANT2 through the first transmit path, and is transmitted to the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, or the fourth antenna ANT4 through the second transmit path.

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

In the rf circuit shown in fig. 2, no matter the electronic device supports one-way transmitting and four-way receiving function or two-way transmitting and four-way receiving function, signals received by each antenna can be transmitted according to the following paths: a signal received by the first antenna ANT1 is transmitted to the transceiver 10 through the first or third reception path; a signal received by the second antenna ANT2 is transmitted to the transceiver 10 through the first reception path or the third reception path; a signal received by the third antenna ANT3 is transmitted to the transceiver 10 through the second or fourth reception path; a signal received by the fourth antenna ANT4 is transmitted to the transceiver 10 through the second or fourth reception 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, the signal can be transmitted according to the following path: firstly, switching to a third Filter3, then transmitting the signal to a fifth amplifier LNA3 after filtering by a third Filter3, and then amplifying and transmitting the signal to the transceiver 10 by a fifth amplifier LNA 3; or, the signal is first switched to the first Filter1, then filtered by the first Filter1, transmitted to the first spdt switch SW1, and then switched to the first amplifier LNA1 by the first spdt switch SW1, and then amplified by the first amplifier LNA1 and transmitted to the transceiver 10.

In one embodiment, signals received by transceiver 10 as shown in FIG. 3 (transceiver 10 is not shown in FIG. 3) are transmitted as follows: in the case where the electronic device 500 supports a one-transmission four-reception function, a 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 ANT3 or the fourth antenna ANT4 through the first transmission path, and is transmitted to the third antenna ANT3 or the fourth antenna ANT4 through the second transmission path.

The signal received by the transceiver 10 is transmitted to the fourth single-pole double-throw switch SW4 through the second amplifier PA1, then is switched to the first Combiner Power Combiner1 through the fourth single-pole double-throw switch SW4, and meanwhile, 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 to the first Combiner Power Combiner1 through the second single-pole double-throw switch SW 2. The two signals are combined by the first Combiner Power Combiner1, transmitted to the first single-pole double-throw switch SW1 by the first Combiner Power Combiner1, transmitted to the first Filter1 by the first single-pole double-throw switch SW1, filtered by the first Filter1, transmitted to the first double-pole double-throw switch DPDT-1, and transmitted to the first antenna ANT1 or the second antenna ANT2 by the first double-pole double-throw switch DPDT-1.

Or, the signal received by the transceiver 10 is transmitted to the fourth spdt switch SW4 through the second amplifier PA1, then switched to the second Combiner Power Combiner2 by the fourth spdt switch SW4, and meanwhile, the signal received by the transceiver 10 is transmitted to the second spdt switch SW2 through the third amplifier PA2, then switched to the second Combiner Power Combiner2 by the second spdt switch SW2, and after being combined by the second Combiner Power Combiner2, the two signals are transmitted to the third spdt switch SW3 by the second Combiner Power Combiner2, and then transmitted to the second Filter2 by the third spdt switch SW3, so that the signal is filtered by the second Filter2 and then transmitted to the second spdt switch t-2, and then transmitted to the fourth dpd antenna 4 or the fourth dpd antenna 8536 through the second spdt-2.

In the case where the electronic device 500 supports the two-transmit four-receive function, a signal is transmitted to the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, or the fourth antenna ANT4 through the first transmit path, and is transmitted to the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, or the fourth antenna ANT4 through the second transmit path.

The signal received by the transceiver 10 is transmitted to the fourth spdt switch SW4 through the second amplifier PA1, and the fourth spdt switch SW4 receives the signal and transmits the signal according to the following paths: firstly, the signals are switched to a first Combiner Power Combiner1, then transmitted to a first single-pole double-throw switch SW1 by a first Combiner Power Combiner1, transmitted to a first Filter Filter1 by the first single-pole double-throw switch SW1, filtered by a first Filter Filter1 and transmitted to a first double-pole double-throw switch DPDT-1, and then transmitted to a first antenna ANT1 or a second antenna ANT2 through the first double-pole double-throw switch DPDT-1; or, the first switch is switched to the second Combiner Power Combiner2, and then the second Combiner Power Combiner2 transmits the second signal to the third spdt switch SW3, and then the third spdt switch SW3 transmits the second signal to the second Filter2, so that the second Filter2 filters the second signal and transmits the second signal to the second spdt switch DPDT-2, and then the second spdt-2 transmits the signal to the third antenna ANT3 or the fourth antenna ANT 4.

In the rf circuit shown in fig. 3, no matter the electronic device supports one-way transmitting and four-way receiving function or two-way transmitting and four-way receiving function, signals received by each antenna can be transmitted through the following paths: a signal received by the first antenna ANT1 is transmitted to the transceiver 10 through the first or third reception path; a signal received by the second antenna ANT2 is transmitted to the transceiver 10 through the first reception path or the third reception path; a signal received by the third antenna ANT3 is transmitted to the transceiver 10 through the second or fourth reception path; a signal received by the fourth antenna ANT4 is transmitted to the transceiver 10 through the second or fourth reception path.

The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A radio frequency circuit is characterized in that the radio frequency circuit is applied to electronic equipment supporting one-path transmitting four-path receiving function or two-path transmitting four-path receiving function; the radio frequency circuit comprises a transceiver, a first receiving channel, a first transmitting channel, a second receiving channel, a third receiving channel and a fourth receiving channel which are respectively connected with the transceiver; wherein:

the fourth receiving path comprises a fourth receiving circuit, the second double-pole double-throw switch and the second antenna group which are connected in sequence;

the first receiving circuit comprises a first amplifier, a first single-pole double-throw switch and a first filter which are connected in sequence; the first filter is connected with the first double-pole double-throw switch;

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

the second transmitting circuit comprises a third amplifier, a second single-pole double-throw switch, a third single-pole double-throw switch and a second filter which are connected in sequence; the second filter is connected with the second double-pole double-throw switch;

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

the third receiving circuit comprises a fifth amplifier and a third filter which are connected in sequence; the third filter is connected with the first double-pole double-throw switch;

the fourth receiving circuit comprises a sixth amplifier and a fourth filter which are connected in sequence; the fourth filter is connected with the second double-pole double-throw switch;

under the condition that the electronic equipment supports a one-way transmitting and four-way receiving function, signals received by the transceiver are transmitted to the first antenna or the second antenna through the first transmitting path and transmitted to the first antenna or the second antenna through the second transmitting path; or the like, or, alternatively,

and the signal received by the transceiver is transmitted to the third antenna or the fourth antenna through the second transmission path.

2. The RF circuit of claim 1, wherein in a case that the electronic device supports a two-way transmission four-way reception function, a signal received by the transceiver is transmitted to the first antenna or the second antenna through the first transmission path, and is transmitted to the first antenna, the second antenna, the third antenna or the fourth antenna through the second transmission path.

3. The radio frequency circuit of claim 1, wherein the signal received by the first antenna is transmitted to the transceiver through the first receive path or the third receive 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;

and the signal received by the fourth antenna is transmitted to the transceiver through the second receiving path or the fourth receiving path.

4. The radio frequency circuit according to claim 1, wherein a fourth single-pole double-throw switch is further connected between the second amplifier and the first combiner; and a second combiner is also connected between the second single-pole double-throw switch and the third single-pole double-throw switch.

5. The RF circuit of claim 4, wherein in a case that the electronic device supports a transmit-receive-all-four function, the transceiver transmits a received signal to the first antenna or the second antenna through the first transmit path, and transmits to the first antenna or the second antenna through the second transmit path; or the like, or, alternatively,

the signal received by the transceiver is transmitted to the third antenna or the fourth antenna through the first transmission path, and is transmitted to the third antenna or the fourth antenna through the second transmission path.

6. The RF circuit of claim 4, wherein in a case that the electronic device supports a two-way transmission four-way reception function, a signal received by the transceiver is transmitted to the first antenna, the second antenna, the third antenna or the fourth antenna through the first transmission path, and is transmitted to the first antenna, the second antenna, the third antenna or the fourth antenna through the second transmission path.

7. The RF circuit of claim 4, wherein the signal received by the first antenna is transmitted to the transceiver through the first receive path or the third receive path;

8. An electronic device comprising a radio frequency circuit as claimed in any one of claims 1 to 7.