Switch switching circuit and radio frequency circuit

Abstract

The utility model discloses a switch switching circuit and a radio frequency circuit. The switch switching circuit comprises a high-level power supply, a low-level power supply, a multiple-input multiple-output controller and a plurality of access switching devices. The multi-input multi-output controller comprises two input ports, multiple output ports, a first port selection device and a second port selection device, wherein the first port selection device and the second port selection device are fixedly connected with the two input ports. And the high-level power supply and the low-level power supply are respectively connected with the two paths of input ports. The multiple-input multiple-output controller is used for controlling the first port selection device to be connected with any path switching device, so that the path switching device communicated with the first port selection device responds to a high-level signal of the high-level power supply to conduct a first path; and the control module is also used for controlling the second port selection device to be connected with any path switching device, so that the path switching device communicated with the second port selection device responds to a low-level signal of the low-level power supply to conduct the second path. Therefore, the design cost of the switch switching circuit is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of radio frequency technology, and specifically relates to a switch switching circuit and a radio frequency circuit. Background Art

[0002] At present, the RF circuit can usually switch the RF path by switching a single-pole double-throw switch. Specifically, each single-pole double-throw switch corresponds to a digital signal interface, and each digital signal interface transmits a path switching signal to the corresponding single-pole double-throw switch in response to a high or low level signal.

[0003] With the development of radio frequency technology, the number of single-pole double-throw switches inside radio frequency circuits has gradually increased, and the number of digital signal interfaces for controlling the single-pole double-throw switches inside the circuits has also increased accordingly, which has led to a higher design cost for the path switching part inside the radio frequency circuit.

[0004] Therefore, the design cost of the switch circuit is still relatively high. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a switching circuit and a radio frequency circuit, which can transmit high and low level signals to multiple path switching devices through a multiple-input multiple-output controller, so that each path switching device responds to different level signals to turn on the corresponding path inside the circuit, thereby reducing the design cost of the switching circuit.

[0006] The switch switching circuit is as follows:

[0007] According to a first aspect of the present application, a switch switching circuit is provided, comprising: a high-level power supply, a low-level power supply, a multiple-input multiple-output controller, and a plurality of path switching devices; the multiple-input multiple-output controller comprises two input ports, multiple output ports, and a first port selection device and a second port selection device fixedly connected to the two input ports; the high-level power supply and the low-level power supply are respectively connected to the two input ports;

[0008] The MIMO controller is used to control the first port selection device to be connected to any of the path switching devices, so that the path switching device connected to the first port selection device switches on the first path in response to the high level signal of the high level power supply;

[0009] The MIMO controller is further used to control the second port selection device to be connected to any of the path switching devices, so that the path switching device connected to the second port selection device turns on the second path in response to the low level signal of the low level power supply.

[0010] In addition, the switch switching circuit of the present application may also have the following additional technical features:

[0011] In combination with the first aspect, in a possible implementation, the high-level power supply circuit includes a first voltage, a first resistor and a second resistor; one end of the first resistor is connected to the first voltage, the other end of the first resistor is respectively connected to the second resistor and the first input port of the multiple-input multiple-output controller, and the other end of the second resistor is grounded.

[0012] In combination with the first aspect, in a possible implementation, the low-level power supply circuit includes a third resistor; one end of the third resistor is connected to the second input port of the MIMO controller, and the other end is grounded.

[0013] In combination with the first aspect, in a possible implementation, the MIMO controller also includes a control chip; the control chip is respectively connected to the first port selection device and the second port selection device, and outputs switching instructions to the first port selection device and the second port selection device.

[0014] In combination with the first aspect, in a possible implementation manner, the path switching device includes an input port, a third port selection device connected to the input port, and two output ports.

[0015] In combination with the first aspect, in a possible implementation manner, the number of output ports of the MIMO controller is the same as the number of the path switching devices.

[0016] In combination with the first aspect, in a possible implementation manner, the switch switching circuit includes four path switching devices.

[0017] According to a second aspect of the present application, a radio frequency circuit is provided, comprising a radio frequency signal source, a radio frequency amplifier, a radio frequency filter, the switch switching circuit in the first aspect, and a plurality of radio frequency receivers.

[0018] In addition, the radio frequency circuit of the present application may also have the following additional technical features:

[0019] In combination with the second aspect, in a possible implementation, the output port of the RF signal source is connected to the input port of the RF amplifier; the output port of the RF amplifier is connected to the input port of the RF filter; the output port of the RF filter is connected to the switching circuit; and each output port of the path switching device in the switching circuit is connected to any one of the RF receivers.

[0020] In combination with the second aspect, in a possible implementation, the RF signal source generates a first RF signal and inputs the first RF signal into the RF amplifier; the RF amplifier increases the power of the first RF signal to generate a second RF signal, and inputs the second RF signal into the RF filter; the RF filter filters out the interference frequency of the second RF signal to generate a third RF signal, and inputs the third RF signal into the switching circuit; the RF receiver receives the third RF signal in response to the path corresponding to the output port in the switching circuit being turned on.

[0021] Compared with the prior art in which each digital signal interface transmits a path switching signal to a corresponding path switching device, the switch switching circuit and the radio frequency circuit provided in the embodiments of the present application can, on the one hand, simultaneously receive high and low level signals through a multi-input multi-output controller, and directly transmit the high and low level signals to different path switching devices, thereby realizing circuit integration; on the other hand, high and low level signals can be transmitted to different path switching devices respectively by switching the connection ports of the port selection device in the multi-input multi-output controller, so that each path switching device responds to different level signals to turn on the corresponding path inside the circuit, thereby reducing the design cost of the switch switching circuit without deploying multiple digital signal interfaces inside the circuit.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 A schematic diagram of a switch switching circuit 200 provided in an embodiment of the present application;

[0025] Figure 2 A circuit diagram of a high-level power supply 201 provided in an embodiment of the present application;

[0026] Figure 3 A circuit diagram of a low-level power supply 202 provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a MIMO controller 203 provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a path switching device 204 provided in an embodiment of the present application;

[0029] Figure 6 Another schematic diagram of the switch switching circuit 200 provided in an embodiment of the present application;

[0030] Figure 7 A schematic diagram of a radio frequency circuit 300 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. In addition, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order of objects.

[0033] In the prior art, the conduction state of each path inside the radio frequency circuit can be achieved by switching a single-pole double-throw switch, and each single-pole double-throw switch needs to be controlled by a digital signal interface (General Purpose Input / Output, abbreviated as GPIO).

[0034] Specifically, when the GPIO port receives a low-level signal, the GPIO port outputs an instruction to the single-pole double-throw switch to control the single-pole double-throw switch to turn on the upper path; when the GPIO port receives a high-level signal, the GPIO port outputs an instruction to the single-pole double-throw switch to control the single-pole double-throw switch to turn on the lower path.

[0035] However, as the number of single-pole double-throw switches inside the RF circuit gradually increases, the number of GPIO ports for controlling the single-pole double-throw switches inside the circuit also increases, which leads to a higher design cost for the path switching part inside the RF circuit.

[0036] Based on this, an embodiment of the present application provides a switch switching circuit that can transmit high and low level signals to multiple path switching devices through a multiple-input multiple-output controller, so that each path switching device responds to different level signals to turn on the corresponding path inside the circuit, thereby reducing the design cost of the switch switching circuit.

[0037] Figure 12 is a schematic diagram of a switch switching circuit 200 provided in an embodiment of the present application. Figure 1 As shown, the switch switching circuit 200 includes: a high-level power supply 201, a low-level power supply 202, a MIMO controller 203, and a plurality of path switching devices 204. The MIMO controller 203 includes two input ports, multiple output ports, and a first port selection device 2031 and a second port selection device 2032 fixedly connected to the two input ports; the high-level power supply 201 and the low-level power supply 202 are connected to the two input ports respectively.

[0038] Specifically, the MIMO controller 203 is used to control the first port selection device 2031 to be connected to any path switching device 204, so that the path switching device 204 connected to the first port selection device 2031 turns on the first path in response to the high level signal of the high level power supply 201; and is also used to control the second port selection device 2032 to be connected to any path switching device 204, so that the path switching device 204 connected to the second port selection device 2032 turns on the second path in response to the low level signal of the low level power supply 202.

[0039] In the embodiment of the present application, the switch switching circuit 200 can transmit a level signal to the path switching device 204 through the MIMO controller 203, so that the path switching device 204 can turn on the corresponding path inside the switch switching circuit 200 in response to different level signals.

[0040] In a possible implementation, the MIMO controller 203 may be a multi-way switch device with multiple inputs and multiple outputs.

[0041] Exemplarily, the MIMO controller 203 can simultaneously receive multiple input signals and output related signals in a timely manner; for example, it can be a double-pole four-throw switch DP4T, a double-pole six-throw switch DP6T, and a double-pole eight-throw switch DP8T that can receive two input signals.

[0042] In a possible implementation, the MIMO controller 203 may simultaneously receive the high-level signal generated by the high-level power supply 201 and the low-level signal generated by the low-level power supply 202 .

[0043] Specifically, the high level power supply 201 and the low level power supply 202 can be connected to two input ports of the MIMO controller 203 respectively, and input level signals to the MIMO controller 203 through the input ports.

[0044] In a possible implementation, the MIMO controller 203 can output the received level signal from different output ports in the MIMO controller 203 through an internal port selection device. The port selection device is fixedly connected to the input port of the MIMO controller 203; each input port is correspondingly connected to a port selection device.

[0045] Exemplarily, by connecting the port selection device to any output port in the MIMO controller 203 , the level signal received by the input port fixedly connected to the port selection device can be output from the MIMO controller 203 through this output port.

[0046] In a possible implementation, the output port of the MIMO controller 203 may correspond to the input port of the path switching device 204, so that the level signal may be transmitted to the path switching device 204 through the MIMO controller 203. The number of the output ports of the MIMO controller 203 may be the same as the number of the path switching devices 204.

[0047] Exemplarily, when any port selection device in the MIMO controller 203 is connected to any output port, the path switching device 204 correspondingly connected to the output port can receive the level signal output by the output port.

[0048] Exemplarily, the path switching device 204 can conduct different paths in response to different level signals. The path switching device 204 can also include a port selection device and multiple output ports to conduct different paths through the connection between the port selection device and its own different output ports.

[0049] For example, when the first port selection device 2031 is connected to one of the path switching devices 204, the path switching device 204 can conduct its own first path in response to the high level signal of the high level power supply 201; and when the second port selection device 2032 is connected to the path switching device 204, the path switching device 204 can conduct its own second path in response to the low level signal of the low level power supply 202. It should be noted that the path switching device 204 does not receive both the high level signal and the low level signal at the same time, but only receives one of the level signals.

[0050] The switch switching circuit 200 provided in the embodiment of the present application can, on the one hand, simultaneously receive high and low level signals through the MIMO controller 203, and directly transmit the high and low level signals to different path switching devices 204, thereby realizing circuit integration; on the other hand, high and low level signals can be transmitted to different path switching devices 204 respectively by switching the connection ports of the port selection device in the MIMO controller 203, so that each path switching device 204 responds to different level signals to turn on the corresponding path inside the circuit, thereby reducing the design cost of the switch switching circuit without deploying multiple digital signal interfaces inside the circuit.

[0051] In another embodiment of the present application, the specific distribution inside the high-level power supply 201 circuit is also introduced. For example, Figure 2 2 is a circuit diagram of a high-level power supply 201 provided in an embodiment of the present application. Figure 2 As shown, the high-level power supply 201 circuit includes a first voltage 2011, a first resistor 2012 and a second resistor 2013; one end of the first resistor 2012 is connected to the first voltage 2011, the other end of the first resistor 2012 is respectively connected to the second resistor 2013 and the first input port of the MIMO controller 203, and the other end of the second resistor 2013 is grounded.

[0052] In the embodiment of the present application, the voltage division design in the high-level power supply 201 circuit can be implemented by the first resistor 2012 and the second resistor 2013, thereby reducing the power consumption of the high-level power supply 201 circuit to a certain extent, and forming a pull-up circuit in the switch switching circuit 200 to pull up the high-level signal.

[0053] In a possible implementation, one end of the first resistor 2012 in the high-level power supply 201 circuit is connected to the first voltage 2011, and the other end is respectively connected to one end of the second resistor 2013 and the first input port of the MIMO controller 203, and the other end of the second resistor 2013 is grounded.

[0054] Exemplarily, the first voltage 2011 may be 1.8V; the first resistor 2012 may be 1KΩ; and the second resistor may be 100KΩ.

[0055] In another embodiment of the present application, the specific distribution inside the low-level power supply 202 circuit is also introduced. For example, Figure 3 2 is a circuit diagram of a low-level power supply 202 provided in an embodiment of the present application. Figure 3 As shown, the low-level power supply 202 circuit includes a third resistor 2021; one end of the third resistor 2021 is connected to the second input port of the MIMO controller 203, and the other end is grounded.

[0056] In the embodiment of the present application, the low-level power supply 202 circuit can be directly grounded through the third resistor 2021 to form a pull-down circuit in the switch switching circuit 200, thereby pulling down the level signal.

[0057] In a possible implementation, one end of the third resistor 2021 in the low-level power supply 202 circuit is connected to the second input port of the MIMO controller 203 , and the other end is grounded.

[0058] Exemplarily, the third resistor may be 0Ω.

[0059] In another embodiment of the present application, other components inside the MIMO controller 203 are also introduced. For example, Figure 4 2 is a schematic diagram of a MIMO controller 203 provided in an embodiment of the present application. Figure 4 As shown, the MIMO controller 203 further includes a control chip 2033 ; the control chip 2033 is connected to the first port selection device 2031 and the second port selection device 2032 respectively, and outputs a switching instruction to the first port selection device 2031 and the second port selection device 2032 .

[0060] In the embodiment of the present application, the switching instruction output by the control chip 2033 inside the MIMO controller 203 can realize the switching of the connection state between each port selection device and each output port inside the MIMO controller 203 .

[0061] In a possible implementation, the control chip 2033 may be a control chip or a converter chip that is compatible with an interface in the MIMO controller 203 .

[0062] Exemplarily, when the interface standard of the MIMO controller 203 is a serial interface standard for mobile devices (Mobile Industry Processor Interface, MIPI for short), the control chip 2033 may be a control chip that is compatible with the MIPI interface.

[0063] In a possible implementation, the control chip 2033 may be connected to the first port selection device 2031 and the second port selection device 2032 respectively, so as to transmit corresponding switching instructions to the port selection devices.

[0064] Exemplarily, when the MIMO controller 203 is a double-pole four-throw switch DP4T that complies with the MIPI interface standard, the control chip 2033 outputs switching instructions to the first port selection device 2031 and the second port selection device 2032 through the control program of the double-pole four-throw switch DP4T. The switching instructions can be used to indicate the connection status of each port selection device and each output port of the MIMO controller 203.

[0065] In another embodiment of the present application, the specific distribution inside the path switching device 204 is also introduced. For example, Figure 5 2 is a schematic diagram of a path switching device 204 provided in an embodiment of the present application. Figure 5 As shown, the path switching device 204 includes an input port, a third port selection device 2041 connected to the input port, and two output ports.

[0066] In the embodiment of the present application, the path switching device 204 can realize the conduction of the path where the output port is located by connecting the third port selection device 2041 with any output port of the device.

[0067] In a possible implementation, the path switching device 204 may be a single pole double throw switch (SPDT), which may specifically include an input port, a third port selection device 2041 connected to the input port, and two output ports. The input port of the path switching device 204 corresponds to one of the output ports of the MIMO controller 203; the third port selection device 2041 is fixedly connected to the input port of the path switching device 204.

[0068] Exemplarily, the path switching device 204 can change the different connection states between the third port selection device 2041 and its own output port in response to the level of the input level signal. For example, when the level signal input by the path switching device 204 is a low level signal, the third port selection device 2041 is connected to the first output port of the path switching device 204; when the level signal input by the path switching device 204 is a high level signal, the third port selection device 2041 is connected to the second output port of the path switching device 204.

[0069] In another embodiment of the present application, the specific distribution quantity of the internal components of the switch switching circuit 200 is also introduced. Exemplarily, the number of output ports of the MIMO controller 203 is the same as the number of the path switching devices 204 .

[0070] In the embodiment of the present application, by setting the number of output ports of the MIMO controller 203 to the same number as the number of the path switching devices 204, a one-to-one correspondence between the output ports of the MIMO controller 203 and the path switching devices 204 can be achieved, thereby ensuring the transmission efficiency of the level signal transmitted to the path switching devices 204.

[0071] In another embodiment of the present application, the specific distribution quantity of the path switching devices 204 inside the switch switching circuit 200 is also introduced. For example, Figure 6 FIG. 2 is another schematic diagram of the switch switching circuit 200 provided in an embodiment of the present application. Figure 6 As shown, the switch circuit 200 includes four path switching devices 204 .

[0072] In a possible implementation, the switch switching circuit 200 may include four path switching devices 204 , and the MIMO controller 203 in the switch switching circuit 200 may also include four output ports.

[0073] For example, Figure 6 As shown, the MIMO controller 203 includes a first input port, a second input port, a first port selection device 2031, a second port selection device 2032, a first output port, a second output port, a third output port and a fourth output port. The first input port of the MIMO controller 203 is connected to the high level power supply 201; the second input port of the MIMO controller 203 is connected to the low level power supply 202; the first output port, the second output port, the third output port and the fourth output port of the MIMO controller 203 correspond to the input ports of the first path switching device, the second path switching device, the third path switching device and the fourth path switching device respectively; the first path switching device, the second path switching device, the third path switching device and the fourth path switching device respectively include a third port selection device 2041 and two output ports.

[0074] Exemplarily, the MIMO controller 203 can transmit the high-level signal of the high-level power supply 201 and the low-level signal of the low-level power supply 202 to any two path switching devices among the first path switching device, the second path switching device, the third path switching device and the fourth path switching device through the first port selection device 2031 and the second port selection device 2032, so that the path switching device that receives the level signal can turn on the corresponding path in response to different level signals.

[0075] For example, Table 1 is a working truth table of each path switching device 204 provided in an embodiment of the present application under different level signals. As shown in Table 1, 0 is used to indicate that the level signal received by the path switching device 204 is a low level signal, and at this time, the first output port in the path switching device 204 is turned on; 1 is used to indicate that the level signal received by the path switching device 204 is a high level signal, and at this time, the second output port in the path switching device 204 is turned on.

[0076] Table 1 Working truth table of each channel switching device 204 under different level signals

[0077]

[0078] Specifically, when the first selection device 2031 is connected to the first output port of the MIMO controller 203, and the second port selection device 2032 is connected to the second output port of the MIMO controller 203, a high-level signal is input to the first path switching device from the first output port of the MIMO controller 203, and a low-level signal is input to the second path switching device from the second output port of the MIMO controller 203. At this time, the first path switching device turns on its own second output port, and the path where the second output port of the first path switching device in the switch switching circuit 200 is connected; the second path switching device turns on its own first output port, and the path where the first output port of the second path switching device in the switch switching circuit 200 is connected.

[0079] Optionally, when the first selection device 2031 is connected to the first output port of the MIMO controller 203 and the second port selection device 2032 is connected to the third output port of the MIMO controller 203, a high-level signal is input to the first path switching device from the first output port of the MIMO controller 203, and a low-level signal is input to the third path switching device from the third output port of the MIMO controller 203. At this time, the first path switching device turns on its own second output port, and the path where the second output port of the first path switching device in the switch switching circuit 200 is connected; the third path switching device turns on its own first output port, and the path where the first output port of the third path switching device in the switch switching circuit 200 is connected.

[0080] Optionally, when the first selection device 2031 is connected to the first output port of the MIMO controller 203 and the second port selection device 2032 is connected to the fourth output port of the MIMO controller 203, a high-level signal is input to the first path switching device from the first output port of the MIMO controller 203, and a low-level signal is input to the fourth path switching device from the fourth output port of the MIMO controller 203. At this time, the first path switching device turns on its own second output port, and the path where the second output port of the first path switching device in the switch switching circuit 200 is connected; the fourth path switching device turns on its own first output port, and the path where the first output port of the fourth path switching device in the switch switching circuit 200 is connected.

[0081] Optionally, when the first selection device 2031 is connected to the second output port of the MIMO controller 203 and the second port selection device 2032 is connected to the first output port of the MIMO controller 203, a high level signal is input to the second path switching device from the second output port of the MIMO controller 203, and a low level signal is input to the first path switching device from the first output port of the MIMO controller 203. At this time, the first path switching device turns on its first output port, and the path where the first output port of the first path switching device in the switch switching circuit 200 is located is turned on; the second path switching device turns on its second output port, and the path where the second output port of the second path switching device in the switch switching circuit 200 is located is turned on.

[0082] Optionally, when the first selection device 2031 is connected to the second output port of the MIMO controller 203 and the second port selection device 2032 is connected to the third output port of the MIMO controller 203, a high level signal is input to the second path switching device from the second output port of the MIMO controller 203, and a low level signal is input to the third path switching device from the third output port of the MIMO controller 203. At this time, the second path switching device turns on its own second output port, and the path where the second output port of the second path switching device in the switch switching circuit 200 is located is turned on; the third path switching device turns on its own first output port, and the path where the first output port of the third path switching device in the switch switching circuit 200 is located is turned on.

[0083] Optionally, when the first selection device 2031 is connected to the second output port of the MIMO controller 203 and the second port selection device 2032 is connected to the fourth output port of the MIMO controller 203, a high level signal is input to the second path switching device from the second output port of the MIMO controller 203, and a low level signal is input to the fourth path switching device from the fourth output port of the MIMO controller 203. At this time, the second path switching device turns on its own second output port, and the path where the second output port of the second path switching device in the switch switching circuit 200 is located is turned on; the fourth path switching device turns on its own first output port, and the path where the first output port of the fourth path switching device in the switch switching circuit 200 is located is turned on.

[0084] Optionally, when the first selection device 2031 is connected to the third output port of the MIMO controller 203 and the second port selection device 2032 is connected to the first output port of the MIMO controller 203, a high level signal is input to the third path switching device from the third output port of the MIMO controller 203, and a low level signal is input to the first path switching device from the first output port of the MIMO controller 203. At this time, the first path switching device turns on its first output port, and the path where the first output port of the first path switching device in the switch switching circuit 200 is located is turned on; the third path switching device turns on its second output port, and the path where the second output port of the third path switching device in the switch switching circuit 200 is located is turned on.

[0085] Optionally, when the first selection device 2031 is connected to the third output port of the MIMO controller 203 and the second port selection device 2032 is connected to the second output port of the MIMO controller 203, a high level signal is input to the third path switching device from the third output port of the MIMO controller 203, and a low level signal is input to the second path switching device from the second output port of the MIMO controller 203. At this time, the second path switching device turns on its first output port, and the path where the first output port of the second path switching device in the switch switching circuit 200 is located is turned on; the third path switching device turns on its second output port, and the path where the second output port of the third path switching device in the switch switching circuit 200 is located is turned on.

[0086] Optionally, when the first selection device 2031 is connected to the third output port of the MIMO controller 203 and the second port selection device 2032 is connected to the fourth output port of the MIMO controller 203, a high-level signal is input to the third path switching device from the third output port of the MIMO controller 203, and a low-level signal is input to the fourth path switching device from the fourth output port of the MIMO controller 203. At this time, the third path switching device turns on its own second output port, and the path where the second output port of the third path switching device in the switch switching circuit 200 is located is turned on; the fourth path switching device turns on its own first output port, and the path where the first output port of the fourth path switching device in the switch switching circuit 200 is located is turned on.

[0087] Optionally, when the first selection device 2031 is connected to the fourth output port of the MIMO controller 203 and the second port selection device 2032 is connected to the first output port of the MIMO controller 203, a high-level signal is input to the fourth path switching device from the fourth output port of the MIMO controller 203, and a low-level signal is input to the first path switching device from the first output port of the MIMO controller 203. At this time, the first path switching device turns on its first output port, and the path where the first output port of the first path switching device in the switch switching circuit 200 is located is turned on; the fourth path switching device turns on its second output port, and the path where the second output port of the fourth path switching device in the switch switching circuit 200 is located is turned on.

[0088] Optionally, when the first selection device 2031 is connected to the fourth output port of the MIMO controller 203 and the second port selection device 2032 is connected to the second output port of the MIMO controller 203, a high level signal is input to the fourth path switching device from the fourth output port of the MIMO controller 203, and a low level signal is input to the second path switching device from the second output port of the MIMO controller 203. At this time, the second path switching device turns on its first output port, and the path where the first output port of the second path switching device in the switch switching circuit 200 is connected; the fourth path switching device turns on its second output port, and the path where the second output port of the fourth path switching device in the switch switching circuit 200 is connected.

[0089] Optionally, when the first selection device 2031 is connected to the fourth output port of the MIMO controller 203 and the second port selection device 2032 is connected to the third output port of the MIMO controller 203, a high level signal is input to the fourth path switching device from the fourth output port of the MIMO controller 203, and a low level signal is input to the third path switching device from the third output port of the MIMO controller 203. At this time, the third path switching device turns on its first output port, and the path where the first output port of the third path switching device in the switch switching circuit 200 is connected; the fourth path switching device turns on its second output port, and the path where the second output port of the fourth path switching device in the switch switching circuit 200 is connected.

[0090] In the above-mentioned embodiment, a switch switching circuit 200 is provided. In another embodiment of the present application, a radio frequency circuit 300 is also provided. For example, Figure 7 is a schematic diagram of a radio frequency circuit 300 provided in an embodiment of the present application. Figure 7As shown, the RF circuit 300 includes a RF signal source 301 , a RF amplifier 302 , a RF filter 303 , the switch circuit 200 mentioned above, and a plurality of RF receivers 304 .

[0091] In a possible implementation, the RF circuit 300 may include an RF signal source 301, an RF amplifier 302, an RF filter 303, a switch circuit 200, and a plurality of RF receivers 304. The RF circuit 300 provided in the embodiment of the present application, on the one hand, can simultaneously receive high and low level signals through the MIMO controller 203 in the switch circuit 200, and directly transmit the high and low level signals to different path switching devices 204 in the switch circuit 200, thereby realizing circuit integration; on the other hand, the high and low level signals can be respectively transmitted to different path switching devices 204 in the switch circuit 200 by switching the connection port of the port selection device in the MIMO controller 203 in the switch circuit 200, so that each path switching device 204 turns on the corresponding path inside the circuit in response to different level signals, thereby reducing the design cost of the switch circuit without deploying multiple digital signal interfaces inside the circuit.

[0092] In another embodiment of the present application, a specific connection method inside the RF circuit 300 is also introduced. Exemplarily, the output port of the RF signal source 301 is connected to the input port of the RF amplifier 302; the output port of the RF amplifier 302 is connected to the input port of the RF filter 303; the output port of the RF filter 303 is connected to the switch circuit 200; each output port of the path switching device 204 in the switch circuit 200 is connected to any RF receiver 304.

[0093] In an embodiment of the present application, when each path switching device 204 in the switch switching circuit 200 inside the RF circuit 300 includes two output ports and each output port corresponds to an RF receiver 304, the reception state of each RF receiver 304 for the RF signal can be determined by the conduction state of the path where each output port of each path switching device 204 in the switch switching circuit 200 is located.

[0094] In another embodiment of the present application, the specific transmission state of the radio frequency signal inside the radio frequency circuit 300 is also introduced. Exemplarily, the radio frequency signal source 301 generates a first radio frequency signal and inputs the first radio frequency signal into the radio frequency amplifier 302; the radio frequency amplifier 302 generates a second radio frequency signal after increasing the power of the first radio frequency signal, and inputs the second radio frequency signal into the radio frequency filter 303; the radio frequency filter 303 generates a third radio frequency signal after filtering out the interference frequency of the second radio frequency signal, and inputs the third radio frequency signal into the switch switching circuit 200; the radio frequency receiver 304 receives the third radio frequency signal in response to the conduction of the path corresponding to the output port in the switch switching circuit 200.

[0095] In the embodiment of the present application, when the path where any output port of the path switching device 204 in the switch switching circuit 200 inside the RF circuit 300 is located is turned on, the RF receiver 304 corresponding to the output port can receive the processed RF signal.

[0096] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. A switch switching circuit, characterized in that: include: High-level power supplies, low-level power supplies, MIMO controllers, and multiple path switching devices; The MIMO controller comprises two input ports, multiple output ports, and a first port selection device and a second port selection device fixedly connected to the two input ports; the high level power supply and the low level power supply are respectively connected to the two input ports; The MIMO controller is used to control the first port selection device to be connected to any of the path switching devices, so that the path switching device connected to the first port selection device switches on the first path in response to the high level signal of the high level power supply; The MIMO controller is further used to control the second port selection device to be connected to any of the path switching devices, so that the path switching device connected to the second port selection device turns on the second path in response to the low level signal of the low level power supply.

2. The switch switching circuit according to claim 1, characterized in that: The high-level power supply circuit includes a first voltage, a first resistor and a second resistor; one end of the first resistor is connected to the first voltage, the other end of the first resistor is respectively connected to the second resistor and the first input port of the MIMO controller, and the other end of the second resistor is grounded.

3. The switch switching circuit according to claim 1, characterized in that: The low-level power supply circuit comprises a third resistor; one end of the third resistor is connected to the second input port of the MIMO controller, and the other end of the third resistor is grounded.

4. The switch switching circuit according to claim 1, characterized in that: The MIMO controller further includes a control chip; the control chip is respectively connected to the first port selection device and the second port selection device, and outputs a switching instruction to the first port selection device and the second port selection device.

5. The switch switching circuit according to claim 1, characterized in that: The path switching device includes an input port, a third port selection device connected to the input port, and two output ports.

6. The switch switching circuit according to claim 1, characterized in that: The number of output ports of the MIMO controller is the same as the number of the path switching devices.

7. The switch switching circuit according to claim 6, characterized in that: The switch switching circuit includes four path switching devices.

8. A radio frequency circuit, characterized in that: It comprises a radio frequency signal source, a radio frequency amplifier, a radio frequency filter, the switch switching circuit according to any one of claims 1 to 7, and a plurality of radio frequency receivers.

9. The radio frequency circuit according to claim 8, characterized in that: The output port of the RF signal source is connected to the input port of the RF amplifier; the output port of the RF amplifier is connected to the input port of the RF filter; the output port of the RF filter is connected to the switch circuit; each output port of the path switching device in the switch circuit is connected to any one of the RF receivers.

10. The radio frequency circuit according to claim 9, characterized in that: The RF signal source generates a first RF signal and inputs the first RF signal into the RF amplifier; the RF amplifier generates a second RF signal after increasing the power of the first RF signal, and inputs the second RF signal into the RF filter; the RF filter generates a third RF signal after filtering out the interference frequency of the second RF signal, and inputs the third RF signal into the switching circuit; the RF receiver receives the third RF signal in response to the path corresponding to the output port in the switching circuit being turned on.

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