A multiport radio frequency coaxial switch, method of implementation, and transmitting system

Abstract

The application discloses a kind of multi-port radio frequency coaxial switch, implementation method and transmitting system, and key components are coaxial switch main body;The coaxial switch main body includes the microwave cavity with the cross section of positive 2n+1 polygon, 2n+1 coaxial ports, n inner conductor connecting plates and insulating connecting plate;N inner conductor connecting plates include: first inner conductor connecting plate, second inner conductor connecting plate, …, the nth inner conductor connecting plate;Wherein, first inner conductor connecting plate is used to realize the connection conduction of any adjacent two coaxial ports;Second inner conductor connecting plate is used to realize the connection conduction of any two coaxial ports spaced one coaxial port, and the nth inner conductor connecting plate is used to realize the connection conduction of any two coaxial ports spaced n-1 coaxial ports;By rotating insulating connecting plate, drive n inner conductor connecting plate synchronous rotation, realize the connection switching of coaxial port.

Description

Technical Field

[0001] This invention belongs to the field of passive devices in electronic information / radio frequency / broadcasting and television, and specifically relates to a multi-port radio frequency coaxial switch, its implementation method, and a transmission system. Background Technology

[0002] Radio frequency (RF) switches are common components in radio frequency and wireless transmission systems, with important applications in basic scientific research, nuclear physics, military, agriculture, medicine, communications, electronic warfare, and broadcasting. Their primary function is to switch the transmission path of microwave signals or microwave power.

[0003] Radio frequency (RF) switching switches come in various structural forms, commonly including mechanical switches, diode switches, and relay switches. Each type of RF switch has its own characteristics and can be applied to different RF systems. Diode and relay switches offer faster switching speeds, with switching times reaching tens of microseconds or even less. However, their high-frequency power capacity is limited; relay switches typically have a high-frequency power capacity of several kW, while diode switches can only handle a maximum power of tens of W. Compared to diode and relay switches, mechanical switching switches, although slower (typically taking hundreds of milliseconds to tens of seconds to complete a single switch), offer significantly higher high-frequency power capacity. Depending on the requirements, the power level of an RF mechanical switching switch can reach hundreds of kW. RF mechanical switching switches can be further categorized into coaxial switches, waveguide switches, and other types of RF mechanical switches based on their interface specifications.

[0004] Coaxial switches are multi-port devices that can contain multiple input ports and multiple output ports, enabling switching and connection between these ports. Common input / output port configurations for coaxial switches include: single-pole double-throw (1 input, 2 outputs), double-pole double-throw (2 inputs, 2 outputs), and single-pole multi-throw (1 input, multiple outputs).

[0005] Figure 1 The principle of a single-pole double-throw coaxial switch is illustrated. This type of coaxial switch is widely used in various communication systems, with a typical application scenario being the switching between the transmitter and the primary / backup load. This type of coaxial switch has two connection states: connection state 1 is "transmitter connected to the primary load," and connection state 2 is "transmitter connected to the backup load." The load here can be any type of power load in the narrow sense, or it can be equipment such as antenna feeders.

[0006] Figure 2The principle of a double-pole double-throw coaxial switch is illustrated. This type of coaxial switch is widely used in broadcast television transmission systems, and its typical application is for switching between the main and backup transmitters, antennas, and dummy loads. This type of coaxial switch has two connection states: connection state 1 is "the main transmitter is connected to the antenna, and the backup transmitter is connected to the dummy load", and connection state 2 is "the main transmitter is connected to the dummy load, and the backup transmitter is connected to the antenna".

[0007] Figure 3 This illustrates the principle of a single-pole multi-throw (SPMD) coaxial switch. As the name suggests, an SPMD coaxial switch has only one input port but multiple output ports, and the input port can be connected to any of the output ports to achieve conductivity. The connection states of this type of coaxial switch are the same as the number of output ports.

[0008] The double-pole double-throw (DPD) coaxial switch is the most common type of coaxial switch, enabling switching connections between one main and one backup transmitter and one main and one backup antenna feeder. However, when the system contains three antenna feeders (one main and two backup), switching cannot be accomplished with a single DPD coaxial switch. In this case, a 5-port DPD triple-throw (DNT) switch is needed to switch between the two transmitters and the three antenna feeders. This requirement is common in medium-wave transmission systems, and currently, multiple DPD coaxial switches are typically cascaded to achieve the functionality of a DPD triple-throw coaxial switch. The system schematic is shown below. Figure 4 As shown.

[0009] While the above solution can achieve double-pole triple-throw (DPDT) switching, it requires two cascaded DPDT coaxial switches. Connecting the two DPDT coaxial switches necessitates coaxial hard feeders and bends, increasing connection points and system uncertainty. Furthermore, the simultaneous control and switching of both sets of coaxial switches adds complexity to the system's control mechanism.

[0010] In practice, single-pole multi-throw (SPMT) switches are sometimes used in broadcast television wireless transmission systems. For example, in medium-wave transmission systems, there may be switches such as... Figure 5 The requirements are as shown. The entire transmission system operates at six frequencies, and the network needs to switch the transmit power signal to the corresponding matching network and notch filter network channels according to the actual frequency used. To achieve this, the entire system requires the use of 10 single-pole double-throw (SPDT) coaxial switches. This approach is not advantageous in terms of either construction cost or overall system reliability and stability. Summary of the Invention

[0011] Purpose of the invention: To address the problems of increased system uncertainty and high complexity of control methods caused by the complex structure of existing multi-pole multi-throw coaxial switches, this invention proposes a multi-port radio frequency coaxial switch, an implementation method, and a transmission system.

[0012] Technical solution: A multi-port radio frequency coaxial switch, including a coaxial switch body;

[0013] The coaxial switch body includes a microwave cavity with a cross-section of a regular 2n+1 polygon, 2n+1 coaxial ports disposed on the 2n+1 outer surfaces of the microwave cavity, n inner conductor connecting plates disposed inside the microwave cavity, and an insulating connecting plate for fixing the n inner conductor connecting plates; wherein, n is a positive integer;

[0014] The n inner conductor connecting plates include: a first inner conductor connecting plate, a second inner conductor connecting plate, ..., an nth inner conductor connecting plate; wherein, the first inner conductor connecting plate is used to achieve the connection and conduction of any two adjacent coaxial ports; the second inner conductor connecting plate is used to achieve the connection and conduction of any two coaxial ports separated by one coaxial port; and the nth inner conductor connecting plate is used to achieve the connection and conduction of any two coaxial ports separated by n-1 coaxial ports.

[0015] By rotating the insulating connecting plate, the n inner conductor connecting plates are driven to rotate synchronously, thereby realizing the switching of coaxial port connections.

[0016] Furthermore, each coaxial port includes: an inner conductor and a contact spring; the inner conductor extends into the microwave cavity, and the contact spring is installed on the end of the inner conductor that extends into the microwave cavity. When the insulating connecting plate is rotated to a certain angle, the contact spring contacts the inner conductor connecting plate.

[0017] Furthermore, each inner conductor connecting plate is made of silver-plated brass.

[0018] Furthermore, the rotation angle of the insulating connecting plate is:

[0019]

[0020] Furthermore, it also includes a knob, which is connected to the insulating connecting plate and is used to manually control the rotation of the insulating connecting plate.

[0021] Furthermore, it also includes a control cabinet, which is equipped with Ethernet and serial control interfaces for controlling the rotation of the insulating connecting plate of the coaxial switch body by sending commands that conform to the definition.

[0022] Furthermore, it also includes a motor and a motor connecting shaft; the motor is connected to the insulating connecting plate via the motor connecting shaft and is used to drive the insulating connecting plate to rotate.

[0023] This invention discloses a method for implementing a multi-port radio frequency coaxial switch, comprising the following steps:

[0024] Step 1: Construct a coaxial switch; the coaxial switch is a multi-port radio frequency coaxial switch disclosed above;

[0025] Step 2: Using any method, such as manual, electric, or remote control, control the insulating connecting plate of the coaxial switch body to rotate to the corresponding position to achieve the connection and conduction of the corresponding coaxial port.

[0026] This invention discloses a medium-wave transmission system, including several coaxial switches; according to the actual operating frequency, the transmission power signal is switched to the corresponding matching network and notch filter network channels through the several coaxial switches;

[0027] The coaxial switch is a multi-port radio frequency coaxial switch disclosed above.

[0028] This invention discloses a wireless transmission system, including several coaxial switches; according to the actual operating frequency, the transmission power signal is switched to the corresponding matching network and notch filter network channels through the several coaxial switches;

[0029] The coaxial switch is a multi-port radio frequency coaxial switch disclosed above.

[0030] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0031] (1) The coaxial switch of the present invention has a 2n+1 port structure, that is, it includes 3, 5, 7 or other odd number of coaxial ports; any one of the ports can be connected to any one of the other ports by switching, thus realizing the switching function of a single-pole multi-throw coaxial switch, which can be used for switching connection of a single transmitter and multiple sets of antenna feeders; for example, the 3-port RF coaxial switch of the present invention can realize the switching function of a single-pole double-throw switch; the 5-port RF coaxial switch of the present invention can realize the switching function of a single-pole four-throw switch; the 7-port RF coaxial switch of the present invention can realize the switching function of a single-pole six-throw switch.

[0032] (2) The 5-port RF coaxial switch of the present invention also has the function of independently realizing a double-pole triple-throw coaxial switch, which can be used for switching connection of two transmitters and three sets of antenna feeders;

[0033] (3) The 7-port RF coaxial switch of the present invention also has the function of independently realizing a three-pole four-throw coaxial switch, which can be used for switching connection of a transmission system with three transmitters and four sets of antenna feeders. Attached Figure Description

[0034] Figure 1This is a schematic diagram of a single-pole double-throw coaxial switch.

[0035] Figure 2 This is a schematic diagram of a double-pole double-throw coaxial switch.

[0036] Figure 3 This is a schematic diagram of a single-pole multi-throw coaxial switch.

[0037] Figure 4 This is a schematic diagram illustrating the principle of implementing a double-pole triple-throw coaxial switch by cascading multiple double-pole double-throw coaxial switches.

[0038] Figure 5 This diagram illustrates how, in a medium-wave transmission system, the transmit power signal needs to be switched to the corresponding matching network and notch filter network channels based on the actual frequency used.

[0039] Figure 6 This is a schematic diagram of a 3-port radio frequency coaxial switch.

[0040] Figure 7 This is a schematic diagram of a 5-port radio frequency coaxial switch;

[0041] Figure 8 A schematic diagram showing the five connection states of a 5-port RF coaxial switch;

[0042] Figure 9 This is a schematic diagram of a 7-port radio frequency coaxial switch;

[0043] Figure 10 A schematic diagram showing the seven connection states of a 7-port RF coaxial switch;

[0044] Figure 11 A schematic diagram of a 6-channel mid-wave antenna feed network is constructed to use a 7-port RF coaxial switch as a single-pole six-throw coaxial switch.

[0045] Figure 12 Views of the control cabinet;

[0046] Figure 13 A 3D structural diagram of a 5-port RF coaxial switch;

[0047] Figure 14 Top view of a 5-port RF coaxial switch;

[0048] Figure 15 A bottom view of a 5-port RF coaxial switch;

[0049] Figure 16 This is a 3D structural diagram of a 7-port RF coaxial switch. Detailed Implementation

[0050] The technical solution of the present invention will now be further described in conjunction with the accompanying drawings and embodiments.

[0051] Example 1:

[0052] like Figure 6 As shown, this embodiment discloses a 3-port radio frequency coaxial switch, mainly comprising a microwave cavity with a regular hexagonal cross-section, three coaxial ports, a connecting plate, and an insulating dielectric disk. The three coaxial ports are located on three sides of the microwave cavity, forming a 120° angle with each other. The connecting plate and the insulating dielectric disk are both disposed within the microwave cavity. The insulating dielectric disk is connected to the connecting plate and is used to rotate the connecting plate. The rotation angle of the connecting plate can be 120°, 240°, or 360°, thereby enabling two of the three coaxial ports to conduct to each other. The 3-port radio frequency coaxial switch of this embodiment is essentially a single-pole double-throw (SPDT) switch.

[0053] Example 2:

[0054] like Figure 7 As shown, this embodiment discloses a 5-port radio frequency coaxial switch, mainly including a microwave cavity with a regular pentagonal cross-section, 5 coaxial ports, a first inner conductor connecting plate, a second inner conductor connecting plate, and a servo motor; the 5 coaxial ports are located on the 5 sides of the microwave cavity, that is, the angle between the axes of two adjacent coaxial ports is 72°. The first inner conductor connecting plate and the second inner conductor connecting plate are disposed in the microwave cavity, and the servo motor is used to synchronously drive the first inner conductor connecting plate and the second inner conductor connecting plate.

[0055] The first inner conductor connecting plate and the second inner conductor connecting plate in this embodiment have different specifications, specifically, different lengths and shapes. The first inner conductor connecting plate can achieve conductive connection between the inner conductors of any two adjacent coaxial ports, while the second inner conductor connecting plate can achieve conductive connection between the inner conductors of any two coaxial ports separated by one port. (See [link to documentation]). Figure 7 , Figure 7 The short line represents the first inner conductor connecting plate, and the long line represents the second inner conductor connecting plate.

[0056] Figure 13 , Figure 14 and Figure 15 Multiple perspective views of a 5-port RF coaxial switch are shown, by Figure 13 , Figure 14 and Figure 15 As shown, each coaxial port consists of an outer conductor flange 2 and an inner conductor 3. A contact spring 8 is installed on the end of the inner conductor 3 that extends into the microwave cavity 1. (Inner conductor connecting plate...) Figure 15 Both numbered 6 and 7 are made of silver-plated brass to ensure good conductivity. Inner conductor connecting plate ( Figure 15Labels 6 and 7 are mounted on the insulating connecting plate 4. The servo motor 5, via the rotating connecting shaft 9, can drive the insulating connecting plate 4 to rotate, simultaneously driving the inner conductor connecting plate ( Figure 15 (Ref. 6 and 7). Inner conductor connecting plate ( Figure 15 By rotating labels 6 and 7 to the corresponding positions, the connection of the corresponding coaxial ports can be achieved.

[0057] The first inner conductor connecting plate 6 and the second inner conductor connecting plate 7 rotate around the axis of the microwave cavity under the drive of the servo motor 4. Each rotation of the servo motor is a multiple of 72°. (See also...) Figure 8 Each coaxial port is numbered from 1 to 5 in a clockwise direction. The 5-port RF coaxial switch in this embodiment has a total of 5 connection states:

[0058] Connection status 1: Coaxial port 1 and coaxial port 2 are connected and conductive; coaxial port 3 and coaxial port 5 are connected and conductive.

[0059] Connection status 2: Coaxial port 2 and coaxial port 3 are connected and conductive; coaxial port 1 and coaxial port 4 are connected and conductive.

[0060] Connection status 3: Coaxial port 2 and coaxial port 5 are connected and conductive; coaxial port 3 and coaxial port 4 are connected and conductive.

[0061] Connection status 4: Coaxial port 1 and coaxial port 3 are connected and conductive; coaxial port 4 and coaxial port 5 are connected and conductive.

[0062] Connection status 5: Coaxial port 1 and coaxial port 5 are connected and conductive, and coaxial port 2 and coaxial port 4 are connected and conductive.

[0063] When the 5-port RF coaxial switch of this embodiment is used as a single-pole four-throw coaxial switch, coaxial port 1 is used as the input port and connected to the transmitter; coaxial ports 2, 3, 4, and 5 are used as output ports and connected to four sets of antenna feeders. By rotating the first inner conductor connecting plate and the second inner conductor connecting plate, any connection between the transmitter and one of the four sets of antenna feeders can be achieved.

[0064] When the 5-port RF coaxial switch of this embodiment is used as a double-pole triple-throw coaxial switch, coaxial ports 1 and 3 are used as input ports to connect the main and backup transmitters; coaxial ports 2, 4, and 5 are used as output ports to connect the three sets of antenna feeders. By rotating the first inner conductor connecting plate and the second inner conductor connecting plate, any connection between one of the two transmitters and one of the three sets of antenna feeders can be achieved.

[0065] Example 3:

[0066] like Figure 9 and Figure 16 As shown, this embodiment discloses a 7-port radio frequency coaxial switch, which mainly includes a microwave cavity with a regular heptagonal cross-section, 7 coaxial ports, a first inner conductor connecting plate, a second inner conductor connecting plate, a third inner conductor connecting plate, and a servo motor;

[0067] The seven coaxial ports are located on the seven sides of the microwave cavity, with the angle between the axes of two adjacent coaxial ports being 51.43°. The first inner conductor connecting plate, the second inner conductor connecting plate, and the third inner conductor connecting plate are disposed inside the microwave cavity, and a servo motor is used to synchronously drive the first inner conductor connecting plate, the second inner conductor connecting plate, and the third inner conductor connecting plate to rotate around the axis of the microwave cavity.

[0068] In this embodiment, the first, second, and third inner conductor connecting plates have different specifications, namely, different lengths and shapes. Specifically, the first inner conductor connecting plate enables the connection and conduction of inner conductors at any two adjacent coaxial ports; the second inner conductor connecting plate enables the connection and conduction of inner conductors at any two coaxial ports separated by one port; and the third inner conductor connecting plate enables the connection and conduction of inner conductors at any two coaxial ports separated by two ports. Figure 8 As shown, in order of length from shortest to longest, they are: the first inner conductor connecting plate, the second inner conductor connecting plate, and the third inner conductor connecting plate.

[0069] like Figure 10 As shown, in this embodiment, the servo motor rotates in multiples of 51.43°. The coaxial ports are numbered from 1 to 7 clockwise, resulting in a total of 7 connection states for the coaxial switch.

[0070] Connection status 1: Coaxial port 1 is connected to coaxial port 2, coaxial port 3 is connected to coaxial port 7, and coaxial port 6 is connected to coaxial port 4.

[0071] Connection status 2: Coaxial port 1 is connected to coaxial port 7, coaxial port 2 is connected to coaxial port 6, and coaxial port 3 is connected to coaxial port 5.

[0072] Connection status 3: Coaxial port 1 and coaxial port 5 are connected and conductive, coaxial port 2 and coaxial port 4 are connected and conductive, and coaxial port 6 and coaxial port 7 are connected and conductive;

[0073] Connection status 4: Coaxial port 1 is connected to coaxial port 3, coaxial port 4 is connected to coaxial port 7, and coaxial port 6 is connected to coaxial port 5.

[0074] Connection status 5: Coaxial port 2 is connected to coaxial port 7, coaxial port 3 is connected to coaxial port 6, and coaxial port 4 is connected to coaxial port 5.

[0075] Connection status six: Coaxial port 1 and coaxial port 6 are connected and conductive; coaxial port 2 and coaxial port 5 are connected and conductive; coaxial port 3 and coaxial port 4 are connected and conductive.

[0076] Connection status 7: Coaxial port 2 and coaxial port 3 are connected and conductive, coaxial port 1 and coaxial port 4 are connected and conductive, and coaxial port 5 and coaxial port 7 are connected and conductive.

[0077] When the 7-port RF coaxial switch of this embodiment is used as a single-pole six-throw coaxial switch, coaxial port 1 is used as the input port and connected to the transmitter, while coaxial ports 2, 3, 4, 5, 6, and 7 are used as output ports and connected to six sets of antenna feeders. By switching, any connection between the transmitter and one of the six sets of antenna feeders can be achieved.

[0078] Figure 11 This diagram illustrates a system using the 7-port RF coaxial switch of this embodiment as a single-pole six-throw coaxial switch to construct a 6-channel mid-wave antenna feed network. Figure 11 As can be seen, the entire system only requires two 7-port RF coaxial switches, which can greatly reduce the complexity and construction cost of the system.

[0079] When the 7-port RF coaxial switch of this embodiment is used as a three-pole four-throw coaxial switch, coaxial ports 1, 3, and 5 are used as input ports to connect to three main and backup transmitters; coaxial ports 2, 4, 6, and 7 are used as output ports to connect to four sets of antenna feeders. By switching, any connection can be made between one of the three transmitters and one of the four sets of antenna feeders.

[0080] Example 4:

[0081] This embodiment discloses a multi-port coaxial switch, which mainly includes a coaxial switch body and a control cabinet. The coaxial switch body and the control cabinet are connected by a 4-core aviation plug cable and a 16-core aviation plug cable, wherein the 4-core aviation plug cable serves as a power line and the 16-core aviation plug cable serves as a control signal line. Figure 12 The control cabinet of this embodiment is shown in various views.

[0082] The coaxial switch body of this embodiment includes a microwave cavity, 2n+1 port outer conductor flanges, 2n+1 port inner conductors, 2n+1 sets of contact springs, n port inner conductor connecting plates (each with different lengths and shapes), one insulating connecting circular plate, a connecting shaft and a connecting bearing, and other accessories.

[0083] Each set of outer conductor flanges and inner conductors forms a coaxial port. This embodiment of the multi-port coaxial switch has 2n+1 coaxial ports. Contact springs are installed on the end of the inner conductor of each of the 2n+1 coaxial ports that extends into the microwave cavity. The inner conductor connecting plates are made of silver-plated brass to ensure good conductivity. The inner conductor connecting plates are mounted on an insulating connecting disc. Rotating the connecting shaft rotates the insulating connecting disc, which in turn rotates the inner conductor connecting plates. When the inner conductor connecting plates are rotated to the corresponding positions, the corresponding coaxial ports are connected and conductive.

[0084] This embodiment of the multi-port coaxial switch has three switching modes: manual switching, electric switching, and remote control switching. The switching mode is selected via a position switch on the control cabinet. Manual switching requires the operator to manually rotate a knob below the microwave cavity of the coaxial switch. The control cabinet has two switching buttons; pressing the switch allows the coaxial switch to rotate forward and backward. The control cabinet includes Ethernet (RJ45) and serial (RS-485) control interfaces, enabling remote control switching of the coaxial switch by sending defined commands. For electric switching, a motor section and an electric control section are included. The motor section mainly includes the motor, housing, motor connecting shaft, and other accessories. This embodiment uses a servo motor, which can precisely control the rotation angle of the motor shaft. Driven by the servo motor, the inner conductor connecting plate rotates by the required angle each time. The electric control section connects the motor section and the coaxial switch body, and mainly includes the housing, relay, microswitch, coupling, etc. The housing is equipped with one 4-pin aviation connector and one 16-pin aviation connector for connection to the control cabinet. Two LEDs, one red and one green, are also designed on the housing to indicate the switching connection status of the coaxial switch. The electric control unit is connected to the insulating connecting plate of the coaxial switch body, and is used to drive the insulating connecting plate to rotate, thereby driving the inner conductor connecting plate.

Claims

1. A multi-port radio frequency coaxial switch, characterized in that: Includes the coaxial switch body; The coaxial switch body includes a microwave cavity with a cross-section of a regular 2n+1 polygon, 2n+1 coaxial ports disposed on the 2n+1 outer surfaces of the microwave cavity, n inner conductor connecting plates disposed inside the microwave cavity, and an insulating connecting plate for fixing the n inner conductor connecting plates; wherein, n is a positive integer, n≥2; The n inner conductor connecting plates include: a first inner conductor connecting plate, a second inner conductor connecting plate, ..., an nth inner conductor connecting plate; wherein, the first inner conductor connecting plate is used to achieve the connection and conduction of any two adjacent coaxial ports; the second inner conductor connecting plate is used to achieve the connection and conduction of any two coaxial ports separated by one coaxial port; and the nth inner conductor connecting plate is used to achieve the connection and conduction of any two coaxial ports separated by n-1 coaxial ports. By rotating the insulating connecting plate, the n inner conductor connecting plates are driven to rotate synchronously, thereby realizing the connection switching of the coaxial port; Each coaxial port includes: an inner conductor and a contact spring; the inner conductor extends into the microwave cavity, and the contact spring is installed on the end of the inner conductor that extends into the microwave cavity. When the insulating connecting plate is rotated to a certain angle, the contact spring contacts the inner conductor connecting plate. The rotation angle of the insulating connecting plate is: 。 2. The multi-port radio frequency coaxial switch according to claim 1, characterized in that: Each inner conductor connection plate is made of silver-plated brass.

3. A multi-port radio frequency coaxial switch according to claim 1, characterized in that: It also includes a knob, which is connected to an insulating connecting plate for manually controlling the rotation of the insulating connecting plate.

4. A multi-port radio frequency coaxial switch according to claim 1, characterized in that: It also includes a control cabinet, which is equipped with Ethernet and serial control interfaces for controlling the rotation of the insulating connecting plate of the coaxial switch body by sending commands that conform to the definition.

5. A multi-port radio frequency coaxial switch according to claim 1, characterized in that: It also includes a motor and a motor connecting shaft; the motor is connected to the insulating connecting plate through the motor connecting shaft and is used to drive the insulating connecting plate to rotate.

6. A method for implementing a multi-port radio frequency coaxial switch, characterized in that: Includes the following steps: Step 1: Construct a coaxial switch; the coaxial switch is a multi-port radio frequency coaxial switch as described in any one of claims 1 to 5; Step 2: Using any method, such as manual, electric, or remote control, control the insulating connecting plate of the coaxial switch body to rotate to the corresponding position to achieve the connection and conduction of the corresponding coaxial port.

7. A medium-wave transmission system, characterized in that: It includes several coaxial switches; depending on the actual operating frequency, the transmit power signal is switched to the corresponding matching network and notch filter network channels through several coaxial switches; The coaxial switch is a multi-port radio frequency coaxial switch as described in any one of claims 1 to 5.

8. A wireless transmission system, characterized in that: It includes several coaxial switches; depending on the actual operating frequency, the transmit power signal is switched to the corresponding matching network and notch filter network channels through several coaxial switches; The coaxial switch is a multi-port radio frequency coaxial switch as described in any one of claims 1 to 5.

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