CN115065378A

CN115065378A - Radio frequency switch, radio frequency system and communication equipment

Info

Publication number: CN115065378A
Application number: CN202210551875.5A
Authority: CN
Inventors: 陈锋; 仝林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-09-16

Abstract

The embodiment of the application discloses a radio frequency switch, a radio frequency system and communication equipment. The radio frequency switch includes: the system comprises at least two selection switches, at least two selector switches and at least two coupling modules; the input ends of each selector switch are correspondingly connected with the receiving and transmitting ports one by one, and the output end of each selector switch is connected with the input end of one coupling module; any input end of a plurality of input ends of each selector switch is connected with an output end of one coupling module, and a plurality of output ends of each selector switch are connected with a plurality of antenna multiplexing ports; each selector switch is used for selecting an antenna multiplexing port for outputting frequency band signals transmitted by the coupling module connected with the selector switch so as to transmit the frequency band signals through the antenna connected with the antenna multiplexing port; the at least two frequency band signals are signals corresponding to at least two frequency band types, and the plurality of antenna multiplexing ports corresponding to each switch are used for connecting a plurality of antennas corresponding to the frequency band types of the frequency band signals.

Description

Radio frequency switch, radio frequency system and communication equipment

Technical Field

The present application relates to the field of radio frequency technologies, and in particular, to a radio frequency switch, a radio frequency system, and a communication device.

Background

A transmitting module commonly used in the prior art includes a low frequency amplifying circuit, a high frequency amplifying circuit and a selector switch, where the low frequency amplifying circuit is used for power amplification of a low frequency signal of a Global System for Mobile Communications (GSM), the high frequency amplifying circuit is used for power amplification of a high frequency signal of the GSM, and the selector switch at the front end is used for signal access of a third generation Mobile communication technology (3rd-generation, 3G), a fourth generation Mobile communication technology (4G) and a fifth generation Mobile communication technology (5G) except a GSM network.

The current transmitting module only supports the connection combination of GSM signal power amplification and 3G/4G/5G signals, has single function, cannot support the switching of a low-frequency antenna and a medium-high frequency antenna, and reduces the application scene of a radio frequency switch.

Disclosure of Invention

The embodiment of the application provides a radio frequency switch, a radio frequency system and communication equipment, switching between at least two antennas is achieved, and the application scene of the radio frequency switch is expanded.

The technical scheme of the embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a radio frequency switch, including: the system comprises at least two selection switches, at least two selector switches and at least two coupling modules; the input ends of each selector switch are correspondingly connected with the receiving and transmitting ports one by one, and the output end of each selector switch is connected with the input end of one coupling module; any input end of a plurality of input ends of each selector switch is connected with an output end of one coupling module, and a plurality of output ends of each selector switch are connected with a plurality of antenna multiplexing ports; each selector switch is used for selecting an antenna multiplexing port for outputting frequency band signals transmitted by a coupling module connected with the selector switch so as to transmit the frequency band signals through an antenna connected with the antenna multiplexing port; the at least two frequency band signals are signals corresponding to at least two frequency band types, and the plurality of antenna multiplexing ports corresponding to each switch are used for connecting a plurality of antennas of the frequency band types corresponding to the frequency band signals.

In a second aspect, an embodiment of the present application provides a radio frequency system, where the radio frequency system includes: a radio frequency switch, a radio frequency transceiver and at least two antenna groups as described in the first aspect; the output end of the radio frequency transceiver is connected with any transceiving port of the radio frequency switch; a power detection port of the radio frequency transceiver is connected with a target port of the radio frequency switch; and the plurality of antennas in each antenna group are connected with the plurality of antenna multiplexing ports in the radio frequency switch in a one-to-one correspondence manner.

In a third aspect, an embodiment of the present application provides a communication device, including: a radio frequency system, a processor and a memory as described in the second aspect.

The embodiment of the application provides a radio frequency switch, a radio frequency system and communication equipment. According to the embodiment of the application, the radio frequency switch comprises: the system comprises at least two selection switches, at least two selector switches and at least two coupling modules; the input ends of each selector switch are correspondingly connected with the receiving and transmitting ports one by one, and the output end of each selector switch is connected with the input end of one coupling module; any input end of a plurality of input ends of each selector switch is connected with an output end of one coupling module, and a plurality of output ends of each selector switch are connected with a plurality of antenna multiplexing ports; each selector switch is used for selecting an antenna multiplexing port for outputting frequency band signals transmitted by the coupling module connected with the selector switch so as to transmit the frequency band signals through the antenna connected with the antenna multiplexing port; the at least two frequency band signals are signals corresponding to at least two frequency band types, and the plurality of antenna multiplexing ports corresponding to each switch are used for connecting the plurality of antennas of the frequency band types corresponding to the frequency band signals. A plurality of output ends of each selector switch in the radio frequency switch can be connected with a plurality of antennas, and at least two selector switches correspond to the antennas of at least two frequency band types and are used for transmitting signals corresponding to different frequency band types. The operating frequencies of the at least two band type antennas are different (e.g. low frequency antenna and medium high frequency antenna) so that a switching between the at least two antennas is achieved. The radio frequency switch can support the switching of a plurality of low-frequency antennas and a plurality of medium-high frequency antennas, and the application scene of the radio frequency switch is expanded.

Drawings

Fig. 1 is an exemplary schematic diagram of a radio frequency switch provided in an embodiment of the present application;

fig. 2 is an exemplary frame structure diagram of a transmitting module according to an embodiment of the present disclosure;

fig. 3 is an exemplary schematic diagram of a transmitting module according to an embodiment of the present disclosure;

fig. 4 is an exemplary schematic diagram of another rf switch provided in an embodiment of the present application;

fig. 5 is an exemplary schematic diagram of a further radio frequency switch provided in an embodiment of the present application;

fig. 6 is an exemplary schematic diagram of another radio frequency switch provided in an embodiment of the present application;

fig. 7 is an exemplary schematic diagram of another radio frequency switch provided in an embodiment of the present application;

fig. 8 is an exemplary schematic diagram of another radio frequency switch provided in an embodiment of the present application;

fig. 9 is an exemplary schematic diagram of yet another rf switch provided in an embodiment of the present application;

fig. 10 is an exemplary schematic diagram of a radio frequency system provided in an embodiment of the present application;

fig. 11 is an exemplary schematic diagram of another radio frequency system provided in an embodiment of the present application;

fig. 12 is an exemplary schematic diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be understood that some embodiments described herein are only for explaining the technical solutions of the present application, and are not intended to limit the technical scope of the present application.

The terms "first" and "second" in the embodiments of the present application are used merely for distinguishing names, do not represent sequential relationships, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The "plurality" in the embodiments of the present application means at least two, for example, two, three, or the like.

In order to better understand the radio frequency switch provided in the embodiment of the present application, prior to describing the technical solution of the embodiment of the present application, a description is made on a related technology.

In the related art, as shown in fig. 1, fig. 1 is an exemplary schematic diagram of a radio frequency switch provided in an embodiment of the present application, where the radio frequency switch is configured with a plurality of radio frequency transceiving ports, an antenna multiplexing Port, and a coupling Port CPL, which are shown in fig. 1 by 14 radio frequency transceiving ports TRX1 to TRX14, and the radio frequency transceiving ports may include a high frequency transceiving Port and a low frequency transceiving Port, where TRX denotes transmit (Tx) and receive (Rx). The radio frequency switch includes a selection switch M and a Coupler (CPL), the selection switch M of fig. 1 includes 14 inputs and 1 output, i.e., the selection switch M in fig. 1 is SP 14T.

In the embodiment of the present application, the input terminal of the selection switch M may also be referred to as a T port, and the output terminal of the selection switch M may also be referred to as a P port. The P Port may represent a polarization (Port) Port for connecting an interface of a fixed terminal (a fixed terminal) in the multi-way switch, and the T Port represents a Throw or Throw (thread) Port for connecting an interface of a movable terminal in the multi-way switch. In this example, the input terminal is used to designate the name of the receiving/transmitting port connected in the multi-way switch, and the output terminal is used to designate the name of the input terminal connected to the coupling module in the multi-way switch.

Illustratively, a T Port represents an input end of a selection switch M, a P Port represents an output end of the selection switch M, in fig. 1, the selection switch M is an SP14T switch, 14T ports of the selection switch M are connected to 14 radio frequency transceiving ports TRX1 to TRX14 in a one-to-one correspondence, the P Port of the selection switch M is connected to an input end of a coupler, an output end of the coupler is connected to an antenna multiplexing Port, an output end of the coupler is further connected to an inductor L, a coupling end of the coupler is connected to a coupling Port, the coupling Port is used for detecting transmission power of an antenna connected to the Ant Port, an isolation end of the coupler is grounded through a resistor R for matching circuit impedance, and a resistance value of the resistor R may be 50 Ω. The rf switch of fig. 1 can combine multiple rf signals, and transmit multiple rf signals through one antenna or receive multiple rf signals through one antenna by using one selection switch and one coupler. Although the circuit structure design is simplified, only one selection switch is used, the function of the radio frequency switch is single, the high-frequency signal and the low-frequency signal received by the radio frequency transceiving port can be transmitted only through one antenna, the switching of a low-frequency (LB) antenna and a medium-high frequency (MHB) antenna cannot be supported, and the application scene of the radio frequency switch is reduced.

IN the related art, a transmission Module (TXM) is provided, as shown IN fig. 2, fig. 2 is an exemplary frame structure diagram of a transmission Module provided IN an embodiment of the present application, where the transmission Module is configured with a plurality of radio frequency transceiving ports, a coupling Port CPL, a high frequency input Port HB IN, a low frequency input Port LB IN, and an antenna multiplexing Port Ant Port, and fig. 2 shows 14 radio frequency transceiving ports TRX1 to TRX 14.

The transmission module includes: the low-frequency power amplifying circuit and the high-frequency power amplifying circuit are connected with one selection switch M together and output high-frequency signals or low-frequency signals to an antenna multiplexing Port through the coupler by switching of the selection switch M. The low-frequency power amplifier can be used for amplifying the power of a GSM 850/900 signal, the high-frequency power amplifier can be used for amplifying the power of a GSM 1800/1900 signal, and the multiple radio frequency transceiving ports TRX1 to TRX14 can be used for accessing signals of other mobile communication technologies, such as a 3G signal, a 4G signal and a 5G signal.

For example, a T port represents an input end of the selection switch M, a P port represents an output end of the selection switch M, and in fig. 2, the selection switch M is an SP14T switch, one T port of the selection switch M is connected to the high-frequency power amplifier, the other two T ports are connected to the low-frequency power amplifier, and the remaining 14T ports are connected to 14 radio frequency transceiver ports TRX1 to TRX14 in a one-to-one correspondence manner. The P Port of the selection switch M is connected to the input end of the coupler, the output end of the coupler is connected to the antenna multiplexing Port, the output end of the coupler is further connected to the inductor L, the coupling end of the coupler is connected to the coupling Port, the coupling Port is used for detecting the transmission power of the antenna connected to the antenna multiplexing Port, the isolation end of the coupler is grounded through the resistor R for matching the circuit impedance, and the resistance value of the resistor R may be 50 Ω (not shown in fig. 2).

The antenna design difficulty problem of metal machine among the correlation technique is solved mostly to adopt the technical scheme of low frequency antenna and well high frequency antenna split antenna, and the radio frequency switch in above-mentioned figure 1 and the transmission module of figure 2 all can not support the antenna to switch to and the design of low frequency antenna and well high frequency antenna split antenna has reduced the applicable scene of transmission module.

For the purpose of explaining the structure of the transmitting module IN fig. 2, an exemplary schematic diagram of a transmitting module is further provided IN the embodiments of the present application, as shown IN fig. 3, the transmitting module is configured with a GSM high frequency input Port GSM HB _ IN for receiving GSM high frequency signals, a GSM low frequency input Port GSM LB _ IN for receiving GSM low frequency signals of a radio frequency transceiver, a coupling Port CPL, an antenna multiplexing Port ANT Port, and a plurality of radio frequency transceiving ports, which are shown as 14 radio frequency transceiving ports TRX1 to TRX14 IN fig. 3.

The transmission module includes: GSM high frequency power amplifier 2G MB &4G MB PA, high frequency Filter Match HB _ Filter, noise reduction unit ISM noise, GSM low frequency power amplifier 2G LB PA, low frequency Filter Match LB _ Filter, selection switch M, Controller MIPI Controller and coupler, the transmission module is configured with power supply port Vcc, port VRAMP, port SCL, port SDA, port VIO and port VBAT.

The GSM high-frequency power amplifier comprises a middle-high frequency front stage PA (a PA close to a GSM HB _ IN IN a graph 3), a middle-high frequency Matching circuit Matching Network (a Matching Network between two PAs IN a 2G MB &4G MB PA IN a graph 3) and a middle-high frequency rear stage PA (a PA far away from the GSM HB _ IN IN a graph 3) which are cascaded, wherein the input end of the middle-high frequency front stage PA is connected with the GSM HB _ IN, the output end of the middle-high frequency front stage PA is connected with a middle-high frequency Matching circuit, the middle-high frequency Matching circuit is connected with the middle-high frequency rear stage PA, and the middle-high frequency rear stage PA is connected with a selector switch M through a noise reduction unit; and the power supply ends of the medium-high frequency front-stage PA and the medium-high frequency rear-stage PA are connected with a power supply port Vcc. The GSM high-frequency power amplifier is used for receiving and amplifying GSM high-frequency signals sent by the radio frequency transceiver, and then outputting the GSM high-frequency signals to the antenna multiplexing port through the high-frequency filter, the noise reduction unit, the selection switch M and the coupler.

The GSM low-frequency amplifier comprises a low-frequency front stage PA (a PA close to a GSM LB _ IN IN fig. 3), a low-frequency Matching circuit Matching Network (a Matching Network between two PAs IN a 2G LB PA IN fig. 3) and a low-frequency rear stage PA (a PA far away from the GSM LB _ IN IN fig. 3) which are cascaded, wherein the input end of the low-frequency front stage PA is connected with the GSM LB _ IN, the output end of the low-frequency front stage PA is connected with the low-frequency Matching circuit, the low-frequency Matching circuit is connected with the low-frequency rear stage PA, and the low-frequency rear stage PA is connected with a selection switch M; and power supply terminals of the low-frequency front-stage PA and the low-frequency rear-stage PA are connected with Vcc. The GSM low-frequency amplifier is used for receiving and amplifying GSM low-frequency signals sent by the radio-frequency transceiver, and then outputting the GSM low-frequency signals to the antenna multiplexing port through the high-frequency filter, the selection switch M and the coupler.

It should be noted that, a noise reduction unit may also be added between the low frequency filter and the selection switch M, and the specific connection relationship is the same as that of the high frequency filter, and fig. 3 is only an example in which the low frequency filter is directly connected to the selection switch, and does not represent that the embodiment of the present application is limited thereto.

In an exemplary embodiment, a T port represents an input end of the selection switch M, a P port represents an output end of the selection switch M, and in fig. 3, the selection switch M is an SP16T switch, one T port of the selection switch M is connected to the noise reduction unit, the other two T ports are connected to the low frequency filter, and the remaining 14T ports are connected to 14 rf transceiving ports TRX1 to TRX14 in a one-to-one correspondence manner. The P Port of the selection switch M is connected with the input end of the coupler, the output end of the coupler is connected with the antenna multiplexing Port, the coupling end of the coupler is connected with the coupling Port, the coupling Port is used for detecting the transmitting power of the antenna connected with the multiplexing Port, the isolation end of the coupler is grounded through a resistor R and used for matching circuit impedance, and the resistance value of the resistor R can be 50 omega.

The transmitting module in fig. 3 is configured with an SDA port, an SCL port, a VIO port, a VBAT port, a VRAMP port; the controller is respectively connected with the SDA port, the SCL port, the VIO port, the VBAT port and the VRAMP port and is used for receiving mobile processor industry interface (MIPI) bus MIPIBUS control signals of the SDA port and the SCL port, receiving MIPI power supply signals of the VIO port, receiving bias voltage signals of the VBAT port and receiving VRAMP signals of the VRAMP port.

According to the above examples, it can be seen that the device function of the transmitting module in fig. 3 is relatively single, only GSM signal power amplification is supported, and the connection combination of 3G/4G/5G signals is supported, and Carrier Aggregation (CA) between a low frequency (LB) band and a medium high frequency (MHB) band is not supported, which reduces the applicable scenarios of the radio frequency switch. Moreover, with the continuous development of the radio frequency system and the communication device, there is a situation that the GSM quits, and if the radio frequency switch of the transmitting module with the GSM PA in fig. 2 or fig. 3 is continuously used after the GSM gradually quits, the cost of the radio frequency system or the communication device will increase due to the cost of the GSM PA.

An embodiment of the present application provides a radio frequency switch, as shown in fig. 4, fig. 4 is an exemplary schematic diagram of another radio frequency switch provided in the embodiment of the present application. The radio frequency switch 100 includes: the system comprises at least two selection switches, at least two selector switches and at least two coupling modules; the input ends of each selector switch are correspondingly connected with the receiving and transmitting ports one by one, and the output end of each selector switch is connected with the input end of one coupling module; any input end of a plurality of input ends of each selector switch is connected with an output end of one coupling module, and a plurality of output ends of each selector switch are connected with a plurality of antenna multiplexing ports; each selector switch is used for selecting an antenna multiplexing port for outputting frequency band signals transmitted by the coupling module connected with the selector switch so as to transmit the frequency band signals through the antenna connected with the antenna multiplexing port; the at least two frequency band signals are signals corresponding to at least two frequency band types, and the plurality of antenna multiplexing ports corresponding to each switch are used for connecting a plurality of antennas corresponding to the frequency band types of the frequency band signals.

In the embodiment of the present application, the transceiving ports may include transceiving ports of multiple frequency band types, for example, a low frequency transceiving port, an intermediate frequency transceiving port, and a high frequency transceiving port, for receiving signals of different frequency band types. Only the transceiving ports are shown in fig. 4, and different frequency band types are not distinguished. The coupling module may include a plurality of band types of coupling modules, for example, a low frequency coupling module, an intermediate frequency coupling module, and a high frequency coupling module. Fig. 4 shows only the coupling module, and the different frequency band types are not distinguished. The selection switches may be single pass conducting devices, illustratively, single pole, multiple throw switches, such as SPDT, SP3T, SP4T, SP10T, and the like. Each selector switch is used for selecting a frequency band signal of any transceiving port connected with an input end (which can also be understood as a T port) of the selector switch, and transmitting the frequency band signal to a coupling module connected with the selector switch, wherein the coupling module corresponds to the selector switch one by one.

In some embodiments, the coupling module is a coupler.

In the embodiment of the present application, the coupling module may be a coupler, and the coupler may be understood as a splitter applied to a microwave system, and distributes power on the trunk channel to each branch channel as required to achieve a splitting function. When transmitting signals, the radio frequency transceiver transmits the initial transmitting signals to an amplifier, and other devices (such as a duplexer, a noise reducer, a filter and the like) process the signals to obtain amplified transmitting signals. The coupler distributes the power of the amplified transmission signal, a small portion of the signal enters the coupling port, and a large portion of the signal enters the antenna. The coupled port power can be derived from a small portion of the signal entering the coupled port. The power of the target transmit signal (i.e., a large portion of the signal entering the antenna) is calculated from the coupled port power. The coupling port is connected with the power detection end of the radio frequency transceiver, and then the power of the target transmitting signal is transmitted to the radio frequency transceiver. The radio frequency transceiver checks the adjustment result of the transmitting power of this time in time according to the power of the target transmitting signal, thereby providing reference for the adjustment of the next transmitting power and improving the reliability of signal transmission.

It should be noted that the coupling module in the embodiment of the present application may also include other signal processing units, such as a duplexer, an amplifier, a filter, and a noise reducer. That is, after receiving the frequency band signal, the frequency band signal may be at least one of amplified, filtered, noise reduced, and signal isolated, and then the processed frequency band signal may be transmitted to the input terminal of the coupler. The signal processing unit is integrated in the radio frequency switch 100, so that further processing of the frequency band signal of the radio frequency transceiving port is realized, transmission errors caused by smaller frequency band signal, noise and the like can be reduced, and moreover, the device (namely the signal processing unit) in front of the radio frequency transceiving port is arranged in the radio frequency switch 100, so that the function of the radio frequency switch 100 is improved, other circuits needing to be connected with the radio frequency switch 100 do not need to be provided with the same device, and the integration level of the device is improved.

In the embodiment of the application, the number of the selection switches, the number of the coupling modules and the number of the change-over switches are the same. In a path formed by a radio frequency transceiving port, a selection switch, a coupling module, a change-over switch, an antenna multiplexing port and an antenna, a frequency band type corresponding to the radio frequency transceiving port connected with the selection switch, a frequency band type corresponding to the coupling module and a frequency band type corresponding to the antenna connected with the antenna multiplexing port are consistent.

In this embodiment, for each selector switch, an output end (which may also be understood as a P port) of the selector switch is connected to an input end of a coupling module, an output end of the coupling module is connected to any input end of a switch, a plurality of output ends of the switch are connected to a plurality of antenna multiplexing ports in a one-to-one correspondence manner, and the antenna multiplexing ports are used for connecting antennas of corresponding frequency band types, so as to transmit frequency band signals through the antennas. The coupling end of the coupling module is connected to a target port, the target port is used for detecting the transmitting power of an antenna connected with any antenna multiplexing port, the isolation end of the coupling module is grounded through a resistor R (shown as a resistor R1 and a resistor R2 in fig. 4) for matching circuit impedance, and the resistance value of the resistor R can be 50 Ω.

In the embodiment of the application, the transceiving ports of at least two types of frequency band signals are separated by at least two selection switches. And adding a plurality of antenna multiplexing ports for each frequency band type through at least two switches. The at least two types of antenna multiplexing ports may be connected to at least two types of antennas, and are used to transmit signals corresponding to different frequency band types, and the at least two types of antennas have different operating frequencies (for example, low-frequency antennas and medium-high frequency antennas), so as to implement switching between the at least two types of antennas, and also implement arbitrary selection between the antennas of the same type, thereby expanding the applicable scenarios of the radio frequency switch 100.

In some embodiments, the coupling end of each coupling module is configured to couple the frequency band signals received by any input end of the selector switch connected thereto, respectively, to obtain coupled signals, and transmit the coupled signals to the target port connected thereto, so as to determine the transmission power.

In the embodiment of the present application, the plurality of selection switches, the plurality of coupling modules, and the plurality of switches form a plurality of types of coupling paths. In actual communication, a frequency band signal is received through one of the transceiving ports at the same time, the frequency band signal passes through the coupling module, a part of the signal reaches any antenna connected with the selector switch through the output end of the coupling module, and the working frequency band of the antenna is consistent with the frequency band type of the frequency band signal, such as a low-frequency antenna, an intermediate-frequency antenna or a high-frequency antenna. A part of the signal reaches the target port through the coupling end thereof to determine the transmission power, and the target port is used for connecting with the power detection end of the radio frequency transceiver so as to transmit the transmission power to the radio frequency transceiver.

It should be noted that the frequency band types in the embodiment of the present application include, but are not limited to, low frequency, intermediate frequency, and high frequency.

In some embodiments, any other input end of the plurality of input ends of each switch is connected with a port of the diversity receiving circuit; the diversity receiving circuit port is used for connecting a diversity receiving circuit of a frequency band type corresponding to the frequency band signal.

In this embodiment, for the same switch, multiple output ends of the switch are connected to multiple antenna multiplexing ports, and the multiple antenna multiplexing ports are used to connect multiple antennas of the same frequency band type, respectively. Any input end of a plurality of input ends of the change-over switch is connected with a port of the diversity reception circuit, the diversity reception circuit connected with the port of the diversity reception circuit can be respectively conducted with any antenna of a plurality of antennas with the same frequency band type through the change-over switch, and the type of the working frequency band of the diversity reception circuit is consistent with the type of the frequency band of the antenna. The plurality of radio frequency transceiving ports, the selection switch, the coupling module, the change-over switch and the plurality of antenna multiplexing ports form a transceiving circuit which has the functions of a receiving path and a transmitting path, and the plurality of antenna multiplexing ports, the change-over switch and the diversity receiving circuit port form a receiving circuit which has the function of a receiving path, so that the construction of the plurality of receiving paths is realized. When the antenna is connected to the transmit-receive path, the antenna may be regarded as a main antenna, and when the antenna is connected to the receive circuit, the antenna may be regarded as a diversity antenna, and the frequency band signals of any frequency band type may be switched between the main antenna and the diversity antenna. If the change-over switch comprises four output ends, four antenna multiplexing ports connected with the four output ends can be connected with four antennas, and frequency band signals of any frequency band type can be switched among the four antennas between the main antenna and the diversity antenna. Additional circuits are not needed to be collocated, and the function richness of the radio frequency switch 100 is improved.

In some embodiments, the at least two selection switches comprise a first selection switch and a second selection switch; the at least two change-over switches comprise a third selection switch and a fourth selection switch; the at least two coupling modules comprise a first coupling module and a second coupling module; the transceiving ports comprise a first transceiving port and a second transceiving port; the frequency band signals comprise a first frequency band signal and a second frequency band signal; the antenna includes a first antenna and a second antenna for illustration, as shown in fig. 5, fig. 5 is an exemplary schematic diagram of a further radio frequency switch provided in an embodiment of the present application. Fig. 5 provides an rf switch 100, wherein a plurality of input terminals of a first selection switch 11 are connected to a plurality of first transceiving ports in a one-to-one correspondence; the output end of the first selection switch 11 is connected with the input end of the first coupling module 21, the output end of the first coupling module 21 is connected with the input end of the third selection switch 31, and a plurality of output ends of the third selection switch 31 are connected with a plurality of first antenna multiplexing ports in a one-to-one correspondence manner; a plurality of input ends of the second selector switch 12 are connected to a plurality of second transceiving ports in a one-to-one correspondence; the output end of the second selection switch 12 is connected to the input end of the second coupling module 22, the output end of the second coupling module 22 is connected to the input end of the fourth selection switch 32, and a plurality of output ends of the fourth selection switch 32 are connected to a plurality of second antenna multiplexing ports in a one-to-one correspondence manner; a third selection switch 31, configured to select a first antenna multiplexing port for outputting the first frequency band signal, so as to transmit the first frequency band signal through a first antenna connected to the first antenna multiplexing port; the first frequency band signal is a signal corresponding to a first frequency band type, and the working frequency band of the first antenna belongs to the first frequency band type; a fourth selection switch 32, configured to select a second antenna multiplexing port for outputting the second frequency band signal, so as to transmit the second frequency band signal through a second antenna connected to the second antenna multiplexing port; the second frequency band signal is a signal corresponding to the second frequency band type, and the working frequency band of the second antenna belongs to the second frequency band type.

In the embodiment of the present application, the first selection switch 11 and the second selection switch 12 in fig. 5 are multi-way selection, single-way conduction switches, an input end of the first selection switch 11 or the second selection switch 12 may be understood as a T port, and an output end of the first selection switch 11 or the second selection switch 12 may be understood as a P port.

In this embodiment of the present application, the frequency band types corresponding to the first transceiving port and the second transceiving port are different, and the frequency band types corresponding to the antennas connected to the first antenna multiplexing port and the second antenna multiplexing port are different. For example, the first frequency band type is a low frequency, and the second frequency band type is a medium-high frequency, the first frequency band signal is a low frequency signal, the low frequency signal includes a low frequency signal of any one of a 3G network, a 4G network, and a 5G network, the medium-high frequency signal of the second frequency band signal includes a medium frequency signal or a high frequency signal, the medium frequency signal includes a medium frequency signal of any one of the 3G network, the 4G network, and the 5G network, and the high frequency signal includes a high frequency signal of any one of the 3G network, the 4G network, and the 5G network. The first transceiving port is a low-frequency transceiving port, the second transceiving port is a medium-high frequency transceiving port, the first antenna multiplexing port is a low-frequency antenna multiplexing port, and the second antenna multiplexing port is a medium-high frequency antenna multiplexing port. By configuring multiple low-frequency antenna multiplexing ports and multiple medium-high frequency antenna multiplexing ports, the radio frequency switch 100 can support switching between a low-frequency antenna and a medium-high frequency antenna, and realize transmission of various signals such as low-frequency signals, medium-high frequency signals, and the like. And a low-frequency antenna can be selected from a plurality of low-frequency antennas to transmit low-frequency signals, and a medium-high frequency antenna can be selected from a plurality of medium-high frequency antennas to transmit medium-high frequency signals, so that the application scene of the radio frequency switch 100 is expanded.

In some embodiments, the destination ports include a first destination port and a second destination port; a coupling end of the first coupling module 21, configured to couple the first frequency band signal received by any input end of the first selection switch 11 to generate a first coupling signal, and transmit the first coupling signal to a first target port, so as to determine a transmission power of the first antenna; the coupling end of the second coupling module 22 is configured to couple the second frequency band signal received by any input end of the second selection switch 12 to generate a second coupled signal, and transmit the second coupled signal to a second target port, so as to determine the transmission power of the second antenna.

In the embodiment of the present application, the coupling end of each coupling module is connected to a target port, and the target port may be understood as a coupling port, and the target port may be used to determine the transmission power of an antenna connected to the output end of the coupling module. The transmitting power of the first antenna and the transmitting power of the second antenna are respectively determined through the first target port and the second target port, and the design scheme of the sub-antennas of the first antenna and the second antenna is achieved.

In some embodiments, the first selection switch 11 and the second selection switch 12 are both single-pass conductive switching devices; the third selection switch 31 and the fourth selection switch 32 are switching devices that are turned on in multiple ways.

In the embodiment of the present application, each of the first selection switch 11 and the second selection switch 12 may be a single-pass conducting device, for example, a single-pole multi-throw switch. The third selection switch 31 and the fourth selection switch 32 may be multi-path conductive devices, and the multi-path conductive devices may be understood as multiple single-path conductive devices, that is, each input terminal of the multiple input terminals may be connected to any output terminal of the multiple output terminals, so as to implement a multi-path conductive function. In actual communication, one path is turned on at the same time.

In some embodiments, the first selection switch 11 is an SPZT switch, Z is an integer greater than 1, an output end of the SPZT switch is connected to an input end of the first coupling module 21, and Z input ends of the SPZT switch are connected to Z first transceiving ports in a one-to-one correspondence; the second selection switch 12 is a SPOT switch, O is an integer greater than 1, an output end of the SPOT switch is connected to an input end of the second coupling module 22, and O input ends of the SPOT switch are connected to O second transceiving ports in a one-to-one correspondence.

In the embodiments of the present application, the SPZT switch and the SPOT switch each represent a single-pole multi-throw switch.

Illustratively, taking the first band type as a low frequency band and the second band type as a medium-high frequency band as an example, the rf switch 100 is configured with a plurality of low frequency transceiving ports, a plurality of medium-high frequency transceiving ports, a plurality of low frequency antenna multiplexing ports, a plurality of medium-high frequency antenna multiplexing ports, and a plurality of target ports. The radio frequency switch 100 comprises four selector switches and two coupling modules, and can meet the requirement of a branch antenna of a low-frequency antenna and a medium-high frequency antenna by reasonably arranging two single-pole multi-throw switches, two multi-pole multi-throw switches and two coupling modules, and can select any of a plurality of low-frequency (medium-high frequency) antennas.

In some embodiments, the third selection switch 31 includes a plurality of input terminals and a plurality of output terminals; the diversity receive circuit ports comprise a first diversity receive circuit port; any two input ends of the multiple input ends of the third selection switch 31 are respectively connected with the output end of the first coupling module 21 and the port of the first diversity receiving circuit; the port of the first diversity receiving circuit is used for connecting the first diversity receiving circuit, and the working frequency band of the first diversity receiving circuit is a first frequency band; receiving a first receiving signal of any one first antenna to the first diversity receiving circuit through the third selection switch 31; a plurality of output terminals of the third selection switch 31 are connected to the plurality of first antenna multiplexing ports in a one-to-one correspondence.

In some embodiments, the fourth selection switch 32 includes a plurality of input terminals and a plurality of output terminals; the diversity receive circuit port comprises a second diversity receive circuit port; any two input ends of the multiple input ends of the fourth selection switch 32 are respectively connected to the output end of the second coupling module 22 and the port of the second diversity receiving circuit; the port of the second diversity receiving circuit is used for connecting the second diversity receiving circuit, and the working frequency band of the second diversity receiving circuit is a second frequency band; receiving a second receiving signal of any one of the second antennas through the fourth selection switch 32 to the second diversity receiving circuit; a plurality of output terminals of the fourth selection switch 32 are connected to the plurality of second antenna multiplexing ports in a one-to-one correspondence.

In some embodiments, any other two input terminals of the multiple input terminals of the fourth selection switch 32 are respectively connected to the mimo receiving circuit port and the standby circuit port; the port of the multi-input multi-output receiving circuit is used for connecting the multi-input multi-output receiving circuit, and the working frequency band of the multi-input multi-output receiving circuit is a second frequency band; the standby circuit port is used for connecting the transceiving circuit or the reference signal detection circuit, and the working frequency bands of the transceiving circuit and the reference signal detection circuit are both the second frequency band; and a second receiving signal of any second antenna is received through the fourth selection switch and is input to the multi-output receiving circuit at most.

Fig. 6 is an exemplary schematic diagram of another radio frequency switch provided in an embodiment of the present application, and fig. 6 provides a radio frequency switch 100, where in fig. 6, the SPZT switch represents a first selection switch 11, the SPOT switch represents a second selection switch 12, the third selection switch 31 includes two input terminals and a plurality of output terminals, and the fourth selection switch 32 includes four input terminals and a plurality of output terminals. The description will be given by taking an example in which the first band type is a low frequency band, the second band type is a medium-high frequency band, the T port represents an input end of the selection switch, and the P port represents an output end of the selection switch. Z T ports of the SPZT switch are connected with Z low-frequency transceiving ports in a one-to-one correspondence mode, and a P port is connected with the input end of the low-frequency coupling module; and the output end of the low-frequency coupling module is connected with the low-frequency antenna multiplexing port. The O T ports of the SPOT switch are connected with the O medium-high frequency transceiving ports in a one-to-one correspondence mode, and the O ports are connected with the input end of the medium-high frequency coupling module; the output end of the medium-high frequency coupling module is connected with a medium-high frequency antenna multiplexing port. A first T port of the third selection switch 31 is connected to the coupling end of the low-frequency coupling module, a second T port is connected to a port of the low-frequency diversity receiving circuit, and a plurality of P ports of the third selection switch 31 are connected to a plurality of low-frequency antenna multiplexing ports in a one-to-one correspondence manner. A first T port of the fourth selector switch 32 is connected to a coupling end of the medium-high frequency coupling module, a second T port is connected to a medium-high frequency diversity receiving circuit port, a third T port is connected to a medium-high frequency multiple-input multiple-output receiving circuit port, a fourth T port is connected to a standby circuit port, and a plurality of P ports of the fourth selector switch 32 are connected to a plurality of medium-high frequency antenna multiplexing ports in a one-to-one correspondence manner.

In the embodiment of the present application, the Reference Signal detection circuit is configured to receive a channel Sounding Reference Signal (SRS) through an antenna connected to an output end of the fourth selection switch 32, where the SRS is configured to estimate uplink channel frequency domain information and perform frequency selective scheduling in wireless communication; used for estimating the downlink channel and carrying out downlink beam forming.

In the embodiment of the present application, the radio frequency switch 100 implements transmission of multiple signals, such as low frequency signals, medium and high frequency signals, by setting multiple low frequency transceiving ports, multiple medium and high frequency transceiving ports, multiple low frequency antenna multiplexing ports, and multiple medium and high frequency antenna multiplexing ports. Meanwhile, the transmission power information of the low-frequency antenna is detected through the second coupling port of the first coupling module 21, and the transmission power information of the medium-high frequency antenna is detected through the second coupling port of the second coupling module 22. The low frequency diversity receiving circuit can receive the received signal of any low frequency antenna through the third selection switch 31, and the medium-high frequency diversity receiving circuit can receive the received signal of any medium-high frequency antenna through the fourth selection switch 32. The mimo receiving circuit can receive the received signal of any of the medium and high frequency antennas through the fourth selection switch 32; the low-frequency transceiver circuit can transmit and receive signals through any medium-high frequency antenna connected with the fourth selection switch 32; the reference signal detection circuit can detect the channel reference signal through any medium-high frequency antenna connected with the fourth selection switch 32, so that the functions of the radio frequency switch 100 are enriched, and the application scenes of the radio frequency switch 100 are increased.

In some embodiments, the third selection switch 31 is a DPDT switch, and two input terminals of the DPDT switch are respectively connected to the port of the second diversity receiving circuit and the output terminal of the second coupling module 22; the two output ends of the DPDT switch are connected with two first antenna multiplexing ports in a one-to-one correspondence manner; the fourth selector switch 32 is a 3P4T switch, and four input terminals of the 3P4T switch are connected to the output terminal of the second coupling module 22, the second diversity receiving circuit port, the multiple-input multiple-output receiving circuit port and the standby circuit port in a one-to-one correspondence manner; the three output ends of the 3P4T switch are connected with three second antenna multiplexing ports in a one-to-one correspondence manner; or, the fourth selection switch 32 is a 4P4T switch, and four output terminals of the 4P4T switch are connected to four second antenna multiplexing ports in a one-to-one correspondence.

Fig. 7 is an exemplary schematic diagram of another radio frequency switch provided in the embodiment of the present application, and fig. 7 provides a radio frequency switch 100, and fig. 7 illustrates an example where a DPDT switch is used as the third selection switch 31, and a 3P4T switch is used as the fourth selection switch 32. Fig. 7 is a diagram for determining the number of antenna multiplexing ports on the basis of fig. 6. The DPDT switch and the 3P4T switch are described in addition, and the connection relationship between other devices and the technical effect thereof can be seen from the above description of fig. 6. Two output ends of the DPDT switch are respectively connected with two first antenna multiplexing ports, and three output ends of the 3P4T switch are respectively connected with three second antenna multiplexing ports.

Fig. 8 is an exemplary schematic diagram of another radio frequency switch provided in an embodiment of the present application, and fig. 8 provides a radio frequency switch 100, and fig. 8 illustrates an example where a DPDT switch is used to represent the third selection switch 31, and a 4P4T switch is used to represent the fourth selection switch 32. Fig. 8 is a diagram for determining the number of antenna multiplexing ports on the basis of fig. 6. The DPDT switch and the 4P4T switch are described in addition, and the connection relationship between other devices and the technical effect thereof can be seen from the above description of fig. 6. Two output ends of the DPDT switch are respectively connected with two first antenna multiplexing ports, and four output ends of the 4P4T switch are respectively connected with four second antenna multiplexing ports.

In the embodiment of the application, the antenna splitting requirements of the low-frequency antenna and the medium-high frequency antenna can be met by reasonably planning the two single-pole multi-throw switches and the two multi-pole multi-throw switches, and the transmission of various signals such as low-frequency signals, medium-high frequency signals and the like is realized. Meanwhile, one of the plurality of low-frequency antenna multiplexing ports can be selected by the third selector switch 31 to meet the requirement of multi-antenna switching, and one of the plurality of medium-high frequency antenna multiplexing ports can be selected by the fourth selector switch 32 to meet the requirement of multi-antenna switching, so that the function richness of the radio frequency switch 100 is improved.

Next, an exemplary application of the embodiment of the present application in a practical application scenario will be described.

Fig. 9 is an exemplary schematic diagram of another radio frequency switch provided in the embodiment of the present application, and fig. 9 provides a radio frequency switch 100, which is described by taking an example that a first frequency band type is a low frequency band, a second frequency band type is a medium-high frequency band, a T port represents an input end of a selector switch, a P port represents an output end of the selector switch, and a coupling module is a coupler as an example.

In the embodiment of the present application, taking the example that the first selection switch 11 is an SP4T switch in fig. 9, the P port is connected to the input end of the low frequency coupler, and the first to fourth T ports are connected to 4 low frequency transceiving ports (LB TRX1 to LB TRX4) in a one-to-one correspondence, and are used to selectively turn on any path between the 4 low frequency transceiving ports and the low frequency coupler. In fig. 9, for example, the second selection switch 12 is an SP9T switch, the P port is connected to the input end of the middle-high frequency coupler, and the first T port to the ninth T port are connected to 9 middle-high frequency transceiving ports (MHB TRX 5-MHB TRX13) in a one-to-one correspondence manner, and are used to selectively conduct any one of the paths between the 9 middle-high frequency transceiving ports and the middle-high frequency coupler.

In this embodiment, in the above fig. 9, taking the third selection switch 31 as a DPDT as an example, the output end of the low frequency coupler is connected to any T Port of the DPDT, 2P ports of the DPDT are connected to 2 low frequency antenna multiplexing ports (an Port1_ LB and an Port2_ LB) in a one-to-one correspondence, and the 2 low frequency antenna multiplexing ports are used to connect 2 low frequency antennas, so as to transmit low frequency signals through any low frequency antenna; the isolated end of the low frequency coupler is grounded through a resistor R1 for matching the circuit impedance, and the resistance of the resistor R1 may be 50 Ω.

In this embodiment, taking the fourth selection switch 32 as 4P4T in fig. 9 as an example, the output end of the medium-high frequency coupler is connected to any T Port of 4P4T, 4P ports of 4P4T are connected to 4 medium-high frequency antenna multiplexing ports (an Port1_ MHB-an Port4_ MHB) in a one-to-one correspondence, and the 4 medium-high frequency antenna multiplexing ports are used to connect 4 medium-high frequency antennas so as to transmit medium-high frequency signals (including high frequency signals, medium-high frequency signals, and intermediate frequency signals) through any medium-high frequency antenna; the isolation end of the middle-high frequency coupler is grounded through a resistor R2 for matching circuit impedance, and the resistance value of the resistor R2 can be 50 omega.

In the embodiment of the application, the coupling end of the low-frequency coupler is connected to the first target port CPL _ LB, and is configured to detect the transmission power information of the low-frequency signal, and transmit the transmission power information to the radio frequency transceiver connected to the first target port CPL _ LB. The coupling end of the medium-high frequency coupler is connected with a second target port CPL _ MHB, and the second target port CPL _ MHB is used for detecting the transmitting power information of at least one class of frequency band signals in the high-frequency signals, the medium-high frequency signals and the intermediate-frequency signals and transmitting the transmitting power information to a radio frequency transceiver connected with the second target port CPL _ MHB.

The radio frequency switch 100 provided in the embodiment of the present application includes an SP4T switch (which may also be an SPZT switch) supporting low-frequency LB, and is configured with low-frequency transceiver ports LB TRX1 to TRX4, a duplexer or a filter may be generally connected to a circuit between the low-frequency transceiver ports and the coupler, and the low-frequency transceiver ports are used for transmitting and receiving low-frequency signals. The SP4T common end (input end or P end) is connected in series with a power coupler for power detection during transmitting the low frequency LB signal, and the target port CPL _ LB connected with the coupling end of the power coupler can be connected to the power detection port of the RF transceiver. The rear end of the power coupler is a DPDT switch, an output end of the power coupler is connected to one input end (also understood as a T Port) of the DPDT switch, two output ends (also understood as P ports) of the DPDT switch are connected to two low frequency antenna multiplexing ports (an Port1_ LB and an Port2_ LB), and the two low frequency antenna multiplexing ports can be respectively connected to 2 low frequency antennas. The other input terminal (also understood as T port) of the DPDT switch is connected to a low frequency diversity receiving circuit port DRx _ LB, and the low frequency diversity receiving circuit port DRx _ LB is used for connecting a low frequency diversity receiving circuit, and the switching between the low frequency main antenna and the low frequency diversity antenna can be realized by the rf switch 100.

In the embodiment of the present application, the radio frequency switch 100 further includes another SP9T switch (which may also be a SPOT switch) supporting the medium-high frequency MHB, and is configured with medium-high frequency transceiver ports MHB TRX5 to TRX13, where a duplexer or a filter is usually connected to a circuit between the medium-high frequency transceiver ports and the coupler, and the medium-high frequency transceiver ports are used for transmitting and receiving medium-high frequency signals. The SP9T common terminal (also can be understood as an input terminal or a P terminal) is connected in series with a power coupler for power detection when a medium-high frequency MHB signal is transmitted, and a target port CPL _ MHB connected with the coupling terminal of the power coupler can be connected to a power detection port of a radio frequency transceiver. The rear end of the power coupler is a 4P4T switch, the output end of the power coupler is connected to one input end (also can be understood as a T Port) of the DPDT switch, 4 output ends (P ports) of the 4P4T switch are connected to four medium-high frequency antenna multiplexing ports (an Port1_ MHB-an Port4_ MHB), and the four medium-high frequency antenna multiplexing ports can be respectively connected to 4 medium-high frequency antennas. The other three input ends (which can also be understood as T ports) of the 4P4T switch are respectively connected to a medium-high frequency diversity receiving circuit port DRx _ MHB, a multiple-input multiple-output receiving circuit port Rx _ MHB, and a standby circuit port TRX/SRS, where the medium-high frequency diversity receiving circuit port DRx _ MHB is used for connecting a medium-high frequency diversity receiving circuit, the multiple-input multiple-output receiving circuit port Rx _ MHB is used for connecting an MHB MIMO receiving circuit, and the standby circuit port TRX/SRS can be connected to a transmitting and receiving circuit, and also can be used for SRS switching. In this example, switching between four antennas may be achieved by using 4P4T switches, while also supporting SRS switching between 4 antennas at n 41. Wherein n41 represents the frequency band number of the 5G frequency band, and the frequency band range is 2515MHz-2675 MHz.

The radio frequency switch 100 provided by the embodiment of the application simplifies the circuits of medium-high frequency MHB multi-antenna switching and n41 SRS switching at 4 antennas and the circuits of low-frequency LB radio frequency signals for antenna switching between main diversity antennas by reasonably planning the circuit functions in the switch aiming at the problems in the antenna design in the metal machine. The method not only supports the combination of multiple radio frequency signals (low-frequency signals and medium and high frequency signals), but also supports the scheme that a low-frequency antenna and a medium and high frequency antenna are divided into antennas. In addition, the low-frequency signal supports the switching between two antennas between the main antenna and the diversity antenna, the middle-high frequency band signal supports the switching between at most four antennas, the n41 four-antenna SRS switching function is integrated, an additional circuit does not need to be matched, the function richness of the radio frequency switch 100 is improved, and the framework of the radio frequency front-end module is simplified. In addition, 4P4T on the medium-high frequency MHB circuit can be replaced with 3P4T, a three-antenna ASDIV can be realized without an additional switch circuit, and the ASDIV is used for switching an antenna main diversity path and can be understood as a diversity antenna switch, thereby meeting the requirement of switching project three antennas and improving the structural diversity of the radio frequency switch 100.

In some embodiments, the radio frequency switch 100 includes: SDATA port, SCLK port, GND port and VIO port; the radio frequency switch 100 further includes: the controller 40 is connected with the SDATA port, the SCLK port, the GND port and the VIO port respectively; the controller 40 is used for receiving mobile processor industrial interface bus control signals of the SDATA port and the SCLK port, realizing the control of at least two selector switches and at least two selector switches, and receiving power supply signals of the VIO port.

In this embodiment, the controller 40 may be a Mobile Industry Processor Interface (MIPI) controller, the MIPI controller is correspondingly connected to a VIO port and a GND port, the VIO port is used for connecting a power supply and providing a working voltage to the MIPI controller through the VIO port, and the GND port is used for grounding; the MIPI controller is correspondingly connected with the SDATA port and the SCLK port, the SDATA port is used for connecting a data signal, the data signal may be a digital signal, and the connection state (on or off) of the T port in the selection switch is controlled by the digital signal, and the SCLK port is used for connecting a clock signal, and is used for aligning with the data signal to determine the data signal to be analyzed, or may be understood as determining a start point and an end point of starting to analyze the data signal.

In the embodiment of the present application, the controller 40 may be a General-purpose input/output (GPIO) controller. The GPIO controller is correspondingly connected with a plurality of ports (such as a SEL port, an LNAEN port and a PAEN port) which can be freely used and controlled by a computer program, and the GPIO controller is used for setting a specific port to realize the control of the connection state (on or off) of the T port of the selection switch.

The embodiment of the application also provides a radio frequency system, which comprises the radio frequency switch, the radio frequency transceiver and at least two antenna groups in any one of the embodiments; the output end of the radio frequency transceiver is connected with any transceiving port of the radio frequency switch; the power detection port of the radio frequency transceiver is connected with the target port of the radio frequency switch; the multiple antennas in each antenna group are connected with the multiple antenna multiplexing ports in the radio frequency switch in a one-to-one correspondence mode.

In the embodiment of the present application, the radio frequency system may be used for processing radio frequency signals of a plurality of different frequency bands, for example, a satellite positioning radio frequency circuit for receiving satellite positioning signals, a Wireless communication technology (Wi-Fi) and bluetooth transceiver radio frequency circuit for processing 2.4GHz and 5GHz frequency bands for communication, and a cellular phone transceiver radio frequency circuit for processing Wireless communication in a cellular phone frequency band.

Exemplarily, as shown in fig. 10, fig. 10 is an exemplary schematic diagram of a radio frequency system according to an embodiment of the present application, where the radio frequency system 1000 includes a radio frequency switch 100, a radio frequency transceiver 200, and a first antenna 301, and an output terminal of the radio frequency transceiver 200 in fig. 10 is connected to any transceiving port of the radio frequency switch 100; the power detection port of the rf transceiver 200 is connected to the first target port of the rf switch 100. The first antenna 301 is connected to any one of the first antenna multiplexing ports of the rf switch 100. The radio frequency transceiver 200, the radio frequency switch 100 and the first antenna 301 form a signal processing path to realize transmission or reception of radio frequency signals through the first antenna 301.

In some embodiments, the radio frequency system 1000 further comprises: at least one of a first diversity receiving circuit, a second diversity receiving circuit, a multiple-input multiple-output receiving circuit, a transceiving circuit, and a reference signal detection circuit; wherein, the output end of the first diversity receiving circuit is connected with the port of the first diversity receiving circuit of the radio frequency switch 100; the output end of the second diversity receiving circuit is connected with the port of the second diversity receiving circuit of the radio frequency switch 100; the multi-input multi-output receiving circuit is connected with the port of the multi-input multi-output receiving circuit of the radio frequency switch; the receiving and transmitting circuit is connected with a standby circuit port of the radio frequency switch; the reference signal detection circuit is connected with a standby circuit port of the radio frequency switch 100; the transceiver circuit and the reference signal detection circuit are not connected to the standby circuit port of the rf switch 100 at the same time.

Exemplarily, as shown in fig. 11, fig. 11 is an exemplary schematic diagram of another radio frequency system provided in the embodiment of the present application, and an output terminal of a first diversity receiving circuit 401 in fig. 11 is connected to a first diversity receiving circuit port of the radio frequency switch 100; the output end of the second diversity receiving circuit 402 is connected to the second diversity receiving circuit port of the rf switch 100; the mimo receiving circuit 403 is connected to the mimo receiving circuit port of the rf switch 100. Since the transceiver circuit and the reference signal detection circuit 404 are not connected to the standby circuit port of the rf switch 100 at the same time, fig. 11 only shows that the reference signal detection circuit 404 is connected to the standby circuit port of the rf switch 100, and does not represent that the embodiment of the present application is limited thereto.

In the embodiment of the present application, the radio frequency system 1000 in fig. 11 shows that the first antenna 301 is connected to any first antenna multiplexing port of the radio frequency switch 100; the second antenna 302 is connected to any one of the second antenna multiplexing ports of the rf switch 100. The first diversity receiving circuit 401, the radio frequency switch 100 and the first antenna 301 form a receiving path to realize receiving the radio frequency signal of the first frequency band type through the first antenna 301. The second diversity receive circuit 402, the rf switch 100 and the second antenna 302 form a receive path to enable receiving rf signals of the second frequency band type through the second antenna 302. The mimo receiving circuit 403, the rf switch 100 and the second antenna 302 form a receiving path to receive the rf signal of the second frequency band type through the second antenna 302. The reference signal detection circuit 404, the rf switch 100 and the second antenna 302 form a receiving path to enable reception of the rf signal of the second frequency band type through the second antenna 302.

In some embodiments, the radio frequency system 1000 further comprises a signal processing unit; the signal processing unit comprises at least one of a duplexer, an amplifier, a filter and a noise reducer; the output terminal of the rf transceiver 200 is connected to any transceiving port of the rf switch 100 through a signal processing unit.

In this embodiment, the radio frequency system 1000 may further include at least one device selected from an amplifier, a duplexer, a filter, and a noise reducer, for performing amplification, isolation, filtering, and noise reduction on the transmission signal of the radio frequency transceiver 200, and the radio frequency switch 100 is configured to access the low-frequency signal and the medium-high frequency signal after the signal processing.

It is understood that the signal processing unit may be connected between the selection switch and the coupling module; the signal processing unit may also be integrated with the rf transceiver 200, that is, the rf transceiver 200 has functions of amplifying, isolating, filtering, and reducing noise of the transmitted signal. The embodiment of the application does not limit the connection position of the signal processing unit, and the diversity of circuit setting is improved.

It should be noted that the radio frequency system 1000 provided in the embodiment of the present application and the radio frequency switch 100 belong to the same concept, and specific implementation processes and beneficial effects thereof are described in detail in the method embodiment and are not described herein again. For technical details not disclosed in the embodiments of the radio frequency system 1000 of the present application, please refer to the description of the embodiments of the radio frequency switch 100 of the present application for understanding.

In some embodiments, the radio frequency system 1000 may be applied to a communication device with wireless communication function, including but not limited to various handheld devices (e.g., smart phones, tablets, etc.), in-vehicle devices, wearable devices (smart watches, smart bracelets, wireless headsets, augmented reality/virtual reality devices, smart glasses), computing devices or other processing devices connected to wireless modems, as well as various forms of User Equipment (UE), Mobile Stations (MS), and terminals (terminal device) with wireless communication function.

In this embodiment of the present application, as shown in fig. 12, fig. 12 is a schematic diagram of a composition structure of a communication device according to an embodiment of the present application, and a communication device 120 according to an embodiment of the present application includes a processor 1201, a memory 1202 storing an executable computer program, and the radio frequency system 1000 according to any of the above embodiments. A processor 1201 for executing the executable computer program stored in the memory 1202. In some embodiments, the communication device 120 may also include a communication interface 1203 and a bus 1204.

In the embodiment of the present Application, the Processor 1201 may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a ProgRAMmable Logic Device (PLD), a Field ProgRAMmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a microprocessor. It is understood that the electronic device for implementing the above-described processor function may be other electronic devices for different communication devices, and the embodiments of the present application are not limited in particular.

In this embodiment, the bus 1204 is used to connect the communication interface 1203, the processor 1201, the rf system 1000 and the memory 1202, so as to realize mutual communication between these devices.

The controller 40 in the radio frequency switch 100 may be a MIPI controller or a GPIO controller. The MIPI interface of the MIPI controller may be used to connect the processor 1201 with peripheral devices such as a display screen and a camera. The MIPI interface includes a Camera Serial Interface (CSI), a Display Serial Interface (DSI), and the like. In some embodiments, the processor 1201 and the camera communicate through a CSI interface to implement the photographing function of the communication device 120. The processor 1201 and the display screen communicate through the DSI interface, and the display function of the communication device 120 is realized.

The GPIO interface of the GPIO controller may be configured by software. The GPIO interface may be configured as a control signal and may also be configured as a data signal. In some embodiments, a GPIO interface may be used to connect the processor 1201 with a camera, display screen, wireless communication module, audio module, sensor module, and the like. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, and the like.

The memory 1202 is used to store executable computer programs including computer operating instructions and data, and the memory 1202 may comprise high-speed RAM memory and may also include non-volatile memory, such as at least two disk memories. In practical applications, the Memory 1202 may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (Hard Disk Drive, HDD) or a Solid-State Drive (SSD); or a combination of the above types of memories and provides executable computer programs and data to the processor 1201.

In addition, each functional module in this embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.

Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The executable computer program in the memory 1202 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of implementations of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks and/or flowchart block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks in the flowchart and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims

1. A radio frequency switch, characterized in that the radio frequency switch comprises: the system comprises at least two selection switches, at least two selector switches and at least two coupling modules;

the input ends of each selector switch are correspondingly connected with the receiving and transmitting ports one by one, and the output end of each selector switch is connected with the input end of one coupling module;

any input end of a plurality of input ends of each selector switch is connected with an output end of one coupling module, and a plurality of output ends of each selector switch are connected with a plurality of antenna multiplexing ports;

each selector switch is used for selecting an antenna multiplexing port for outputting frequency band signals transmitted by a coupling module connected with the selector switch so as to transmit the frequency band signals through an antenna connected with the antenna multiplexing port;

the at least two frequency band signals are signals corresponding to at least two frequency band types, and the plurality of antenna multiplexing ports corresponding to each switch are used for connecting a plurality of antennas of the frequency band type corresponding to the frequency band signals.

2. The radio frequency switch of claim 1,

the coupling end of each coupling module is used for respectively coupling the frequency band signals received by any input end of the selection switch connected with the coupling module to obtain coupling signals, and transmitting the coupling signals to a target port connected with the coupling module to determine the transmitting power.

3. The radio frequency switch of claim 1,

any other input end of the plurality of input ends of each selector switch is connected with a port of the diversity receiving circuit;

the diversity receiving circuit port is used for connecting a diversity receiving circuit of a frequency band type corresponding to the frequency band signal.

4. The radio frequency switch according to any of claims 1-3, wherein at least two of the selection switches comprise a first selection switch and a second selection switch; the at least two change-over switches comprise a third selection switch and a fourth selection switch; the at least two coupling modules comprise a first coupling module and a second coupling module; the transceiving ports comprise a first transceiving port and a second transceiving port; the frequency band signals comprise a first frequency band signal and a second frequency band signal; the antenna comprises a first antenna and a second antenna;

a plurality of input ends of the first selector switch are connected with a plurality of first transceiving ports in a one-to-one correspondence manner; the output end of the first selection switch is connected with the input end of the first coupling module, the output end of the first coupling module is connected with the input end of the third selection switch, and a plurality of output ends of the third selection switch are connected with a plurality of first antenna multiplexing ports in a one-to-one correspondence manner;

a plurality of input ends of the second selector switch are connected with a plurality of second transceiving ports in a one-to-one correspondence manner; the output end of the second selection switch is connected with the input end of the second coupling module, the output end of the second coupling module is connected with the input end of the fourth selection switch, and a plurality of output ends of the fourth selection switch are connected with a plurality of second antenna multiplexing ports in a one-to-one correspondence manner;

the third selection switch is used for selecting the first frequency band signal to be output from a first antenna multiplexing port so as to transmit the first frequency band signal through a first antenna connected with the first antenna multiplexing port; the first frequency band signal is a signal corresponding to a first frequency band type, and the working frequency band of the first antenna belongs to the first frequency band type;

the fourth selection switch is configured to select a second antenna multiplexing port for outputting the second frequency band signal, so as to transmit the second frequency band signal through a second antenna connected to the second antenna multiplexing port; the second frequency band signal is a signal corresponding to a second frequency band type, and the working frequency band of the second antenna belongs to the second frequency band type.

5. The radio frequency switch of claim 4, wherein the target ports include a first target port and a second target port;

the coupling end of the first coupling module is configured to couple a first frequency band signal received by any input end of the first selection switch to generate a first coupling signal, and transmit the first coupling signal to a first target port, so as to determine the transmission power of the first antenna;

the coupling end of the second coupling module is configured to couple the second frequency band signal received by any input end of the second selection switch to generate a second coupling signal, and transmit the second coupling signal to a second target port, so as to determine the transmission power of the second antenna.

6. The radio frequency switch of claim 4,

the first selection switch and the second selection switch are single-path conducting switching devices;

the third selection switch and the fourth selection switch are switching devices that are turned on in multiple ways.

7. The radio frequency switch of claim 6,

the first selection switch is an SPZT switch, Z is an integer larger than 1, the output end of the SPZT switch is connected with the input end of the first coupling module, and Z input ends of the SPZT switch are connected with Z first transceiving ports in a one-to-one correspondence manner;

the second selection switch is a SPOT switch, O is an integer larger than 1, the output end of the SPOT switch is connected with the input end of the second coupling module, and O input ends of the SPOT switch are connected with O second transceiving ports in a one-to-one correspondence mode.

8. The radio frequency switch of claim 6, wherein the third selection switch comprises a plurality of inputs and a plurality of outputs; the diversity receive circuit port comprises a first diversity receive circuit port;

any two input ends of the plurality of input ends of the third selection switch are respectively connected with the output end of the first coupling module and the port of the first diversity receiving circuit;

the first diversity receiving circuit port is used for connecting a first diversity receiving circuit, and the working frequency band of the first diversity receiving circuit is the first frequency band;

receiving a first receiving signal of any one of the first antennas through the third selection switch to the first diversity receiving circuit;

and a plurality of output ends of the third selector switch are connected with a plurality of first antenna multiplexing ports in a one-to-one correspondence manner.

9. The radio frequency switch of claim 6, wherein the diversity receive circuit port comprises a second diversity circuit port;

the fourth selection switch comprises a plurality of input ends and a plurality of output ends;

any two input ends of the plurality of input ends of the fourth selection switch are respectively connected with the output end of the second coupling module and the port of the second diversity receiving circuit;

the second diversity receiving circuit port is used for connecting a second diversity receiving circuit, and the working frequency band of the second diversity receiving circuit is the second frequency band;

receiving a second receiving signal of any one of the second antennas through the fourth selection switch to the second diversity receiving circuit;

and a plurality of output ends of the fourth selector switch are connected with a plurality of second antenna multiplexing ports in a one-to-one correspondence manner.

10. The radio frequency switch of claim 9,

any two other input ends of the multiple input ends of the fourth selection switch are respectively connected with the multiple-input multiple-output receiving circuit port and the standby circuit port;

the port of the multiple-input multiple-output receiving circuit is used for connecting a multiple-input multiple-output receiving circuit, and the working frequency band of the multiple-input multiple-output receiving circuit is the second frequency band;

the standby circuit port is used for connecting a transceiver circuit or a reference signal detection circuit, and the working frequency bands of the transceiver circuit and the reference signal detection circuit are both the second frequency band;

and receiving a second receiving signal of any one of the second antennas through the fourth selection switch to the multiple-input multiple-output receiving circuit.

11. The radio frequency switch according to any of claims 8-10,

the third selection switch is a DPDT switch, and two input ends of the DPDT switch are respectively connected with a port of a second diversity receiving circuit and an output end of the second coupling module; two output ends of the DPDT switch are connected with two first antenna multiplexing ports in a one-to-one correspondence manner;

the fourth selection switch is a 3P4T switch, and four input ends of the 3P4T switch are connected with the output end of the second coupling module, the second diversity receiving circuit port, the multiple-input multiple-output receiving circuit port and the standby circuit port in a one-to-one correspondence manner; the three output ends of the 3P4T switch are connected with the three second antenna multiplexing ports in a one-to-one correspondence manner;

or, the fourth selection switch is a 4P4T switch, and four output ends of the 4P4T switch are connected to the four second antenna multiplexing ports in a one-to-one correspondence manner.

12. The radio frequency switch according to any of claims 1-3, wherein the coupling module is a coupler.

13. The radio frequency switch according to any of claims 1 to 3,

the radio frequency switch includes: SDATA port, SCLK port, GND port and VIO port;

the radio frequency switch further comprises: the controller is connected with the SDATA port, the SCLK port, the GND port and the VIO port respectively;

the controller is used for receiving mobile processor industrial interface bus control signals of the SDATA port and the SCLK port, realizing control over at least two selector switches and at least two selector switches, and receiving power supply signals of the VIO port.

14. A radio frequency system, characterized in that the radio frequency system comprises:

the radio frequency switch, the radio frequency transceiver, and the at least two antenna groups of any one of claims 1-13;

the output end of the radio frequency transceiver is connected with any transceiving port of the radio frequency switch;

the power detection port of the radio frequency transceiver is connected with the target port of the radio frequency switch;

and the plurality of antennas in each antenna group are connected with the plurality of antenna multiplexing ports in the radio frequency switch in a one-to-one correspondence mode.

15. The radio frequency system of claim 14, further comprising: at least one of a first diversity receiving circuit, a second diversity receiving circuit, a multiple-input multiple-output receiving circuit, a transceiving circuit, and a reference signal detection circuit;

the output end of the first diversity receiving circuit is connected with the port of the first diversity receiving circuit of the radio frequency switch;

the output end of the second diversity receiving circuit is connected with the port of the second diversity receiving circuit of the radio frequency switch;

the multiple-input multiple-output receiving circuit is connected with the multiple-input multiple-output receiving circuit port of the radio frequency switch;

the receiving and transmitting circuit is connected with a standby circuit port of the radio frequency switch;

the reference signal detection circuit is connected with a standby circuit port of the radio frequency switch;

the transceiver circuit and the reference signal detection circuit are not connected with a standby circuit port of the radio frequency switch at the same time.

16. The radio frequency system according to claim 14, further comprising a signal processing unit; the signal processing unit comprises at least one of a duplexer, an amplifier, a filter and a noise reducer;

the output end of the radio frequency transceiver is connected with any transceiving port of the radio frequency switch through the signal processing unit.

17. A communication device, characterized in that the communication device comprises:

the radio frequency system, processor and memory of any one of claims 14-16.