A radio frequency switch microwave transmission device

Abstract

The application discloses a kind of radio frequency switch microwave transmission devices, including stator disc and rotor disc, coaxial radio frequency connector is provided with the common port in the center of stator disc, multiple coaxial radio frequency connector interfaces are provided with around common port in the periphery of stator disc, corresponding radio frequency connector load is provided with in the periphery of rotor disc with the coaxial radio frequency connector interface of the periphery of stator disc, remove one radio frequency connector load among them, U-shaped microwave transmission line channel is provided with between the position of radio frequency connector load of removal and the center of rotor disc, U-shaped microwave transmission line channel is communicated in the center of rotor disc with the common port of the center of stator disc, rotate rotor disc can select the common port of the center of stator disc through U-shaped microwave transmission line channel and connect with the coaxial radio frequency connector interface of the periphery of stator disc center, other coaxial radio frequency connector interfaces of the periphery of disc center butt joint radio frequency connector load of the periphery of rotor disc.

Description

Technical Field

[0001] This invention relates to the field of microwave communication technology, and in particular to a radio frequency switch microwave transmission device. Background Technology

[0002] With the development of AI and data centers, the demand for high-frequency, multi-port, and high-stability RF switches in high-speed data cable automated testing systems is becoming increasingly urgent. Traditional coaxial RF switches have frequencies up to 110GHz, such as the single-pole eight-throw coaxial RF switch disclosed in Chinese patent CN 119560749 A: the common port of the coaxial RF switch is placed at the center of a circle, and conductive sub-ports are arranged on the circle. Microwave transmission between each port on the circle and the common port uses a common cavity ground. The connection of the central conductor is confirmed by adjusting the position of the inner conductor spring, rather than by rotation. The coaxial RF switch switches to the sub-port by adjusting the position of the spring. Therefore, as can be seen from the patent diagram, the spring and sidewall of each conductive path need to undergo strict matching design to form an edge line transmission structure to ensure signal integrity from the coaxial interface of the common end to the edge coupling transmission structure of the spring and then to the coaxial interface of the sub-port. The cavity of the non-conductive path also forms a branch circuit structure with the cavity of the conductive path, affecting the isolation and other indicators between channels. As the frequency increases, the corresponding wavelength decreases, and the size of the reeds also decreases. The space available for impedance transformation in each channel becomes increasingly limited. The smaller the size of the reeds, the shorter their lifespan. Therefore, this type of transmission structure will inevitably reach a bottleneck as the frequency increases, either by sacrificing the switching lifespan or by sacrificing the number of channels. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a radio frequency switch microwave transmission device that supports multiple radio frequency switches, reduces the number of radio frequency connection links, and minimizes VSWR and power loss degradation. This enables high-performance and high-stability expansion in large-scale switching scenarios.

[0004] To achieve the above objectives, the present invention provides a radio frequency switch microwave transmission device, comprising a stator disk and a mover disk. The mover disk is rotatably connected to the stator disk. A common port of a coaxial radio frequency connector is provided at the center of the stator disk. Multiple coaxial radio frequency connector interfaces are arranged around the common port on the periphery of the stator disk. Radio frequency connector loads corresponding to the coaxial radio frequency connector interfaces around the stator disk are provided on the mover disk. One of the radio frequency connector loads is removed. A U-shaped microwave transmission line channel is provided between the removed radio frequency connector load and the center of the mover disk. The common port at the center of the stator disk is connected to one of the coaxial radio frequency connector interfaces around the center of the stator disk through the U-shaped microwave transmission line channel of the mover disk. Other coaxial radio frequency connector interfaces around the center of the stator disk are connected to the radio frequency connector loads around the mover disk. A rotation drive device drives the mover disk to lift, rotate, and then fall, forming a selective connection between the common port at the center of the stator disk and one of the coaxial radio frequency connector interfaces around the stator disk through the U-shaped microwave transmission line channel.

[0005] The solution further includes: the rotation drive device comprising a rotation drive motor and a lifting drive motor. The lifting drive motor is fixedly connected to the stator disk. The transmission shaft of the rotation drive motor is connected to the mover disk, driving the mover disk to rotate. The lifting drive motor is placed on a lifting plate and connected to a lifting mechanism. The lifting drive motor, through the lifting mechanism, connects to the lifting plate, driving the lifting plate and the rotation drive motor and the mover disk as a whole to perform lifting motion. The selected connection sequence is as follows: first, the lifting drive motor is started, and the mover disk is lifted by the lifting mechanism; then, the lifting drive motor is stopped, and then the rotation drive motor is started to drive the mover disk to rotate. After rotating around the center of the mover disk in the U-shaped microwave transmission line channel to a coaxial RF connector interface around the center of the stator disk to be connected, the rotation drive motor is stopped; then, the lifting drive motor is started again, and the mover disk is lowered by the lifting mechanism, and the lifting drive motor is stopped; thus completing the selected connection between the common port at the center of the stator disk and a coaxial RF connector interface around the stator disk.

[0006] A further aspect of the solution is as follows: The lifting mechanism includes a circular sleeve placed on the lifting plate. The shaft of the lifting drive motor is connected to the circular sleeve. A guide sliding module is arranged around the circular sleeve around the lifting plate. The guide sliding module is equipped with rollers. An arc-shaped groove running vertically and horizontally is arranged around the side wall of the circular sleeve. The rollers of the guide sliding module are inserted into the grooves. The lifting drive motor drives the rotation of the circular sleeve, causing the rollers to move along the arc-shaped grooves, thereby moving the lifting plate vertically and horizontally. This forms a situation where the lifting drive motor, through the lifting mechanism, connects to the lifting plate and drives the lifting plate, the rotating drive motor carried by the lifting plate, and the moving plate as a whole to perform lifting and lowering movements.

[0007] A further aspect of the solution is that the connection between the U-shaped microwave transmission line channel and the coaxial RF connectors located around the mover disk and the stator disk, and the corresponding RF connector loads, is a pressure-bearing elastic connection.

[0008] The solution is further described as follows: the moving disk has a two-layer structure, with the U-shaped microwave transmission line channel and the coaxial RF connector interface load placed in the lower layer, and the upper layer having spring holes corresponding to the U-shaped microwave transmission line channel and the coaxial RF connector interface load, with springs installed in the spring holes. The springs press against the U-shaped microwave transmission line channel and the RF connector load, so that the U-shaped microwave transmission line channel and the RF connector load are tightly connected to the coaxial RF connector interface corresponding to the stator disk.

[0009] The solution further states that the load is one of the following: open-circuit load, short-circuit load, and matched load.

[0010] A further aspect of the solution is that the interfaces distributed on the stator disk are coaxial radio frequency connectors, and the U-shaped microwave transmission line channel corresponds to a coaxial transmission line structure.

[0011] A further aspect of the solution is that the coaxial RF connector interface is perpendicular to the end face where the stator disk circumference is located.

[0012] The beneficial effects of this invention are: The conductive path of this invention adopts a fully coaxial transmission circuit structure to connect the central common coaxial connector to a certain coaxial connector on the circumference. The coaxial connectors of the other non-conductive channels are also directly connected to the load using the coaxial transmission circuit structure. In this way, each transmission channel retains the original coaxial transmission circuit structure characteristics without introducing, transforming, impedance changing, or designing and processing other types of transmission circuit structures, and without any signal integrity circuit matching. This provides the best microwave transmission system for signal integrity, impedance consistency, insertion loss, standing wave, and isolation.

[0013] Therefore, based on such a microwave transmission system, the number of coaxial switching ports is no longer a bottleneck. The channel transmission frequency is only related to the coaxial connector and the coaxial transmission structure process, and is no longer affected by other channels.

[0014] In this invention, the ports of a single radio frequency switch are evenly distributed at an angle on the circumference. Assuming the number of ports is N, the distribution angle is 360 / N. The corresponding mover also distributes the load and a coaxial transmission channel at the corresponding position, so that the rotor can rotate at a fixed angle.

[0015] Meanwhile, the rotation drive device for lifting, rotating, and lowering ensures reliable and stable switching.

[0016] The invention will be further explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is an external schematic diagram of the combined structure of the stator disk and the mover disk of the device of the present invention; Figure 2 This is a schematic cross-sectional view of the combined structure of the stator disk and the mover disk of the device of the present invention; Figure 3 This is an axonometric schematic diagram of the combined structure of the stator disk and the mover disk of the device of the present invention; Figure 4 This is a schematic diagram showing the distribution of the coaxial radio frequency connectors on the stator disk of the device of the present invention; Figure 5 This is a schematic diagram of the load distribution of the rotor disk radio frequency connector in the device of the present invention; Figure 6 This is a schematic diagram of the overall structure of the device, showing the state of the moving disk being lifted when the rotor disk rotates. Figure 7 This is a schematic diagram of the moving rotor disk falling down when the rotor disk rotates in the overall structure of the device; Figure 8 This is an exploded view of the device's lifting mechanism. Detailed Implementation

[0018] A radio frequency switch microwave transmission device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figures 5 to 8As shown, the coaxial switch microwave transmission device includes a stator disk 1 and a mover disk 2. The mover disk 2 is rotatably connected to the stator disk 1. A common port 101 of the coaxial RF connector interface is provided at the center of the stator disk 1. Multiple coaxial RF connector interfaces 102 are arranged around the common port 101 around the periphery of the stator disk. RF connector loads 201 corresponding to the coaxial RF connector interfaces 102 arranged around the periphery of the stator disk 1 are provided on the mover disk 2. One of the RF connector loads is removed. A U-shaped microwave transmission line channel 3 is arranged between the removed RF connector load position and the center of the mover disk. One end of the U-shaped microwave transmission line channel 3 is connected to the common port 101 at the center of the stator disk 1 at the center of the mover disk 2. The other end of channel 3 is connected to a coaxial RF connector interface 102 around the center of the stator disk. That is, the common port 101 of the center of the stator disk is connected to a coaxial RF connector interface 102 around the center of the stator disk through the U-shaped microwave transmission line channel 3 of the moving disk. Other coaxial RF connector interfaces around the center of the stator disk are connected to the RF connector load 201 around the moving disk. A rotation drive device drives the moving disk 2 to lift, rotate, and then fall. The common port 101 of the center of the stator disk is selected to be connected to any coaxial RF connector interface 101 around the center of the stator disk 1 through the U-shaped microwave transmission line channel 3 of the moving disk, forming a selective connection between the common port of the center of the stator disk and a coaxial RF connector interface around the stator disk through the U-shaped microwave transmission line channel.

[0019] like Figure 6 , Figure 7 and Figure 8 As shown, Figure 6 and Figure 7The diagram illustrates the overall structure of the device, in which the rotation drive device includes a rotation drive motor 4 and a lifting drive motor 5. The lifting drive motor 5 is placed on a lifting plate 9 above the rotation drive motor 4 and connected to a lifting mechanism. The lifting drive motor 5 is fixedly connected to the stator plate 1 by a frame 103 arranged upward around the stator plate 1. A motor cover 6 is provided on the outside of the lifting drive motor 5. The rotation drive motor 4 is placed on the mover plate 2, and its rotor is connected to the mover plate 2 to drive the mover plate 2 to rotate. The frame 103 surrounds the rotation drive motor 4 and limits the rotation drive motor 4 by a linear bearing 7, so that the rotation drive motor 4 can move up and down. A lifting drive motor 5 is placed on top of a rotary drive motor 4 and connected to a lifting mechanism. The lifting drive motor 5 is connected to a lifting plate 9 through the lifting mechanism, driving the lifting plate 9 and the rotary drive motor 4 and the moving plate 2 carried by the lifting plate 9 to move up and down as a whole. The rotating shaft of the rotary drive motor 4 carried by the lifting plate 9 is fixedly connected to the moving plate 2, driving the moving plate 2 to rotate. The working sequence of the selected connection is as follows: First, start the lifting drive motor 5 to lift the moving plate 2 through the lifting mechanism; then, stop the lifting drive motor 5, and then start the rotary drive motor 4 to drive the moving plate 2 to rotate. After rotating around the center of the moving plate in the U-shaped microwave transmission line channel 3 to a coaxial RF connector interface 102 around the center of the stator disk to be connected, stop the rotary drive motor 4; then, start the lifting drive motor 5 again to lower the moving plate 2 through the lifting mechanism, and stop the lifting drive motor 5; thus completing the selected connection between the common port 101 of the stator disk center and a coaxial RF connector interface 102 around the stator disk.

[0020] The lifting mechanism includes a circular sleeve 8, which is placed on the lifting plate 9. The shaft of the lifting drive motor 5 is connected to the circular sleeve 8, driving the circular sleeve 8 to rotate. A guide sliding module 901 is arranged around the circular sleeve around the lifting plate. The guide sliding module 901 is equipped with rollers 902. The lifting plate 9 is placed on the rotation drive motor 4. A cylinder is arranged in the center of the lifting plate 9. The circular sleeve is fitted onto the cylinder and slides vertically and vertically with the lifting plate 9. At least three arc-shaped, vertically inclined slots 801 are evenly distributed around the side wall of the circular sleeve 8. The middle section of the slot is inclined, and the two ends are horizontal. A guide sliding module 901 is provided on the lower outer end of the sleeve 8, corresponding to the arc-shaped inclined groove 801. A roller 902 is provided on the guide sliding module 901, and the roller 902 is inserted into the arc-shaped inclined groove 801. The lifting drive motor 5 drives the rotation of the sleeve 8, causing the roller 902 to move along the arc-shaped inclined groove, which in turn moves the lifting plate 9 up and down. This forms a lifting mechanism where the lifting drive motor 5 connects to the lifting plate 9, driving the lifting plate 9 and the rotating drive motor 4 and the movable turntable 2 it carries to perform lifting motion as a whole. In other words, the rotation of the sleeve 8 is driven by the arc-shaped inclined groove 801, causing the roller to move up and down along the arc-shaped inclined groove 801, which in turn moves the lifting plate 9 up and down. Since the rotating drive motor 4 is connected to the movable turntable 2, the up and down movement of the lifting plate 9 is driven by the rotating drive motor 4, which in turn moves the movable turntable 2 up and down.

[0021] As a whole, this device should also include a power supply and drive control circuit, which can be located on the top of the device. These are not shown in the mature technology diagrams. Among them, the drive control circuit includes a wireless remote control circuit. The wireless remote control circuit can remotely control the selective connection between the common port 101 at the center of the stator disk and a coaxial radio frequency connector interface 102 around the stator disk.

[0022] In this embodiment, for a tight connection, the connection between the U-shaped microwave transmission line channel 3 and the RF connector load 201 corresponding to the coaxial RF connectors around the mover disk and the stator disk is a pressure-bearing elastic connection. Therefore, the mover disk 2 has a two-layer structure. The U-shaped microwave transmission line channel 3 and the RF connector load 201 are located in the lower layer 202, and the upper layer 203 has spring holes 204 corresponding to the U-shaped microwave transmission line channel 3 and the RF connector load 201. A spring 205 is installed in the spring hole 204, and the spring 205 presses against the U-shaped microwave transmission line channel 3 and the RF connector load 201, ensuring a tight connection between the U-shaped microwave transmission line channel 3 and the RF connector load 201 and the coaxial RF connector interface 102 corresponding to the stator disk 1.

[0023] To ensure a stable connection between the rotary drive motor 4 and the mover turntable 2 in the initial state, a balancing elastic pressure bar 10 is provided in the frame 103 that is set upward around the stator disc 1. The lower end of the balancing elastic pressure bar 10 rests on the balancing connecting plate 11. The balancing connecting plate 11 is connected and fixed to the fixing flange 401 of the rotary drive motor 4, and the mover turntable 2 is connected and fixed to the rotating shaft 402 of the rotary drive motor 4.

[0024] Wherein: the load is one of open circuit load, short circuit load, and matched load (e.g., 50 ohm matched load). In order to ensure accurate mating between the RF connector load 201 of the mover disk 2 and the coaxial RF connector interface 102 on the stator disk 1, the coaxial RF connector interface is perpendicular to the end face of the stator disk circumference.

[0025] Wherein: when the interfaces distributed on the stator disk are coaxial RF connectors, the U-shaped microwave transmission line channel corresponds to a coaxial transmission line structure.

[0026] In a specific embodiment, when the radio frequency port of the radio frequency switch microwave transmission device is a coaxial port, the U-shaped microwave transmission line channel 3 used for internal switching and conduction, as well as the load, adopt a fully coaxial transmission structure, including a stator disk 1 and a mover disk 2. Corresponding microwave transmission units are integrated in the stator and the mover. Assuming that the number of switching ports is N, the stator disk 1 includes one common port coaxial radio frequency connector (called COM) placed at the center of the circumference, and N sub-port coaxial radio frequency connectors placed on the circumference with a radius of R, evenly distributed on the circumference at an angle φ (φ=360 / N) (named: 1, 2, 3....N). The installation direction of these N+1 coaxial radio frequency connectors is perpendicular to the surface of the circumference. In this way, one end of the radio frequency coaxial connector is placed on the outside of the surface for external connection, and the other end is placed on the inside of the surface for microwave transmission connection of the mover disk 2. Figure 3This illustration shows a case where N is 12, illustrating the surface of the stator and the distribution of the coaxial RF connectors (the coaxial connectors are perpendicular to the surface of the circle). The mover disk 2 includes a U-shaped microwave transmission line channel 3, which is a channel tube. One end of this U-shaped microwave transmission line channel is located at the center of the circle, and the other end is located on a circle of radius R. The remaining N-1 RF connector loads 201 are evenly distributed on the circle of radius R at an angle φ (φ=360 / N). The ports of the RF connector loads 201 are also perpendicular to the surface of the circle, outputting to one side for connection with the coaxial RF connector interface 102 of the stator disk 1. The mover disk 2 is located above the stator disk 1, so the center of the mover disk 2 and the center of the stator disk 1 have their COM connectors at the center, initially achieving a COM to 1 port connection. When the moving disk 2 rotates by an angle φ around the axis of the circle in the figure each time, the center of the moving disk 2 and the COM port of the stator disk 1 are still in a coaxial matching connection state. The U-shaped microwave transmission line channel 3 will switch from the initial 1 position to the 2 position port to realize the conduction connection from COM to the 2 port. In this way, the connection and conduction of the 3, 4, 5, 6...IN ports can be realized, and the remaining non-conducting ports are simultaneously placed in the load state.

[0027] As shown in the diagram, the conductive path uses a fully coaxial transmission circuit structure to connect the central common coaxial connector to a coaxial connector on the circumference. The coaxial connectors of the remaining non-conductive channels are also directly connected to the load using the same coaxial transmission circuit structure. This way, each transmission channel retains the original characteristics of the coaxial transmission circuit structure without introducing, converting, or modifying other types of transmission circuit structures, impedance changes, or requiring signal integrity circuit matching design and processing. This provides the best microwave transmission system for signal integrity, impedance consistency, insertion loss, standing wave ratio, and isolation. Therefore, based on this microwave transmission system, the number of coaxial switching ports is no longer a bottleneck. The channel transmission frequency is only related to the coaxial connector and coaxial transmission structure technology and is no longer affected by other channels. In this embodiment, the ports of a single coaxial RF switch are evenly distributed at an angle on the circumference. Assuming the number of ports is N, the distribution angle is 360 / N. The corresponding mover also distributes the load and one coaxial transmission channel at the corresponding position, allowing the mover disk 2 to rotate at a fixed angle. By rotating the turntable 2, rotating it at angles φ that are evenly distributed around the N ports, the switching between the ports can be achieved, while ensuring that the other ports can be connected to the load. Therefore, based on this coaxial RF switch microwave transmission system, various numbers of units can be expanded, and it is not limited to N being a certain value.

[0028] In this embodiment, when the port is a coaxial connector, the path adopts a fully coaxial transmission circuit structure. The load path, the U-shaped microwave transmission path structure of the conductor, and their relative positions are the core innovations of this embodiment. Only with such composition and distribution can the coaxial RF switch support a single coaxial switch design with a larger number of channels and a single coaxial RF switch design with higher frequency and higher performance.

Claims

1. A radio frequency switch microwave transmission device, characterized in that, The device includes a stator disk and a mover disk. The mover disk is rotatably connected to the stator disk. A common port of a coaxial RF connector is provided at the center of the stator disk. Multiple coaxial RF connector interfaces are provided around the common port on the periphery of the stator disk. RF connector loads corresponding to the coaxial RF connector interfaces around the stator disk are provided on the mover disk. One of the RF connector loads is removed. A U-shaped microwave transmission line channel is provided between the removed RF connector load and the center of the mover disk. The common port at the center of the stator disk is connected to one of the coaxial RF connector interfaces around the center of the stator disk through the U-shaped microwave transmission line channel of the mover disk. Other coaxial RF connector interfaces around the center of the stator disk are connected to the RF connector loads around the mover disk. A rotation drive device drives the mover disk to lift, rotate, and then fall, forming a selective connection between the common port at the center of the stator disk and one of the coaxial RF connector interfaces around the stator disk through the U-shaped microwave transmission line channel. The rotation drive device includes a rotation drive motor and a lifting drive motor. The lifting drive motor is fixedly connected to the stator disk. The transmission shaft of the rotation drive motor is connected to the moving disk, driving the moving disk to rotate. The lifting drive motor is placed on a lifting plate and connected to a lifting mechanism. The lifting drive motor, through the lifting mechanism, connects to the lifting plate, driving the lifting plate and the rotation drive motor and moving disk it carries to perform lifting motion. The working sequence for selecting the connection is as follows: First, start the lifting drive motor to lift the moving disk through the lifting mechanism. Then, stop the lifting drive motor. Next, start the rotation drive motor to rotate the moving disk. After rotating around the center of the moving disk in the U-shaped microwave transmission line channel to a coaxial RF connector interface around the center of the stator disk to be connected, stop the rotation drive motor. Then, start the lifting drive motor again to lower the moving disk through the lifting mechanism, and stop the lifting drive motor. This completes the selection connection between the common port at the center of the stator disk and a coaxial RF connector interface around the stator disk. The lifting mechanism includes a cylindrical sleeve placed on the lifting plate. The shaft of the lifting drive motor is connected to the cylindrical sleeve. A guide sliding module is arranged around the cylindrical sleeve around the lifting plate. The guide sliding module is equipped with rollers. An arc-shaped groove is arranged around the side wall of the cylindrical sleeve. The rollers of the guide sliding module are inserted into the groove. The lifting drive motor drives the rotation of the cylindrical sleeve, causing the rollers to move along the arc-shaped groove, which in turn moves the lifting plate up and down. This forms a lifting mechanism in which the lifting drive motor, the lifting plate, the rotating drive motor carried by the lifting plate, and the moving plate turntable move up and down as a whole.

2. The radio frequency switch microwave transmission device according to claim 1, characterized in that, The connection between the U-shaped microwave transmission line channel and the coaxial RF connectors located around the mover turntable and the stator turntable, and the corresponding RF connector loads, is a pressure-bearing elastic connection.

3. The radio frequency switch microwave transmission device according to claim 1, characterized in that, The moving disk has a two-layer structure. The U-shaped microwave transmission line channel and the coaxial RF connector interface load are placed in the lower layer. The upper layer is provided with spring holes corresponding to the U-shaped microwave transmission line channel and the coaxial RF connector interface load. Springs are installed in the spring holes and press against the U-shaped microwave transmission line channel and the RF connector load, so that the U-shaped microwave transmission line channel and the RF connector load are tightly connected with the coaxial RF connector interface corresponding to the stator disk.

4. The radio frequency switch microwave transmission device according to claim 1, characterized in that, The load is one of the following: open circuit load, short circuit load, and matched load.

5. The radio frequency switch microwave transmission device according to claim 1, characterized in that, The interfaces distributed on the stator disk are coaxial radio frequency connectors, and the U-shaped microwave transmission line channel corresponds to a coaxial transmission line structure.

6. The radio frequency switch microwave transmission device according to claim 1, characterized in that, The coaxial RF connector interface is perpendicular to the end face where the stator disk circumference is located.

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