Continuously adjustable high-power waveguide attenuator

Abstract

The utility model discloses a continuously adjustable high-power waveguide attenuator, which comprises a base, an attenuator cavity is arranged in the base, the attenuator cavity is a cylindrical cavity, a waveguide signal input port and a waveguide signal output port are respectively arranged at two ends of the cylindrical cavity, a penetrating gap is arranged on the side wall of the upper end of the axial middle of the cylindrical cavity, and the waveguide signal input port is communicated with the waveguide signal output port. An attenuation sheet is inserted into the penetrating gap and is a metal sheet, one side plane of the metal sheet is a resistive film surface coated with a resistive film, the resistive film surface faces the waveguide input port and becomes a waveguide sputtering surface, one end of the attenuation sheet extends out of the gap and is connected with a telescopic arm, and the telescopic arm is connected with a driving motor; a control circuit controls the driving motor to drive the telescopic arm to move up and down, and the telescopic arm moving up and down drives the attenuation piece to move up and down to achieve attenuation adjustment of signals passing through the waveguide. The device is simple in structure; the high-precision motor drives the metal attenuation piece to move up and down to control the attenuation amount of signals, operation is greatly facilitated, and time is saved.

Description

Technical Field

[0001] The utility model relates to a continuously adjustable high-power waveguide attenuator, which is a high-power attenuator based on waveguide E-plane segmentation. Background Art

[0002] The existing waveguide attenuators are based on the conduction principle and generally withstand a power of ≤0.5W in this frequency band, which cannot withstand high power. With the continuous development of millimeter wave and terahertz technology, the existing attenuators can no longer meet the requirements. Therefore, it is necessary to improve the waveguide attenuators so that they can withstand high power and be easily adjustable to meet the needs of the existing test environment. Summary of the invention

[0003] In view of the above problems, the purpose of the utility model is to provide a continuously adjustable high-power waveguide attenuator, which is a high-power attenuator based on waveguide E-plane segmentation, which can realize the continuous adjustable function of panel touch, manual knob, remote operation and digital display at the same time, and the withstand power is greater than 10W.

[0004] In order to achieve the above purpose, the solution of the utility model is:

[0005] A continuously adjustable high-power waveguide attenuator comprises a base, in which an attenuator cavity is arranged, the attenuator cavity is a cylindrical cavity, two ends of the cylindrical cavity are respectively a waveguide signal input port and a waveguide signal output port, a penetration gap is arranged on the axial middle upper end side wall of the cylindrical cavity, an attenuation plate is inserted into the penetration gap, the attenuation plate is a metal plate, one side plane of the metal plate is a resistance film surface coated with a resistance film, the resistance film surface faces the waveguide input port to become a waveguide sputtering surface, one end of the attenuation plate extends out of the gap to connect a telescopic arm, the telescopic arm is connected to a driving motor, a control circuit controls the driving motor to drive the telescopic arm to move up and down, and the telescopic arm that moves up and down drives the attenuation plate to move up and down to achieve attenuation adjustment of the waveguide signal passing through.

[0006] The solution is further as follows: the telescopic arm includes an L-shaped connecting plate and a telescopic column, the upper horizontal plate of the L-shaped connecting plate is connected to the telescopic column, the lower end of the vertical plate of the L-shaped connecting plate is connected to the attenuation plate, the telescopic column is connected to a driving motor, and the driving motor drives the telescopic column to move up and down.

[0007] A further solution is: the driving motor is a linear motor or a stepping motor. If it is a linear motor, the linear moving rotor of the linear motor drives the telescopic arm to move; if it is a stepping motor, the rotor of the stepping motor drives the telescopic arm to move through a nut and screw.

[0008] A further solution is that the control circuit is provided with a display screen and a manual drive button.

[0009] The beneficial effects of the utility model are as follows: visualization, convenient operability, high integration and simple structure; microwave power can be transmitted to the power load for absorption in a direction to achieve high-power attenuation capability; the attenuation part controls the attenuation of the signal by driving the metal attenuation sheet up and down through a high-precision motor, wherein the attenuation sheet is composed of a layer of resistance film sputtered on one side of a metal sheet, which can improve the flatness of the attenuation and can withstand high-power signals to increase the attenuator's withstand power to more than 10W, greatly facilitating operation and saving time.

[0010] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the waveguide cavity of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the attenuation sheet of the utility model;

[0014] Figure 4 It is a schematic diagram of the control circuit block diagram of the utility model;

[0015] Figure 5 It is a schematic diagram of the overall appearance of the utility model. DETAILED DESCRIPTION

[0016] A continuously adjustable high power waveguide attenuator, see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The continuously adjustable high-power waveguide attenuator comprises a base 1, in which an attenuator cavity 2 is arranged. Figure 2 As shown, the attenuator cavity 2 is a cylindrical cavity, and the two ends of the cylindrical cavity are respectively a waveguide signal input port 201 and a waveguide signal output port 202. The waveguide signal 203 passes through the cylindrical cavity. A penetration gap 204 is provided on the axial middle upper end side wall of the cylindrical cavity, and an attenuation plate 3 is inserted into the penetration gap. The attenuation plate 3 is a metal plate, and one side plane of the metal plate is a resistance film surface 301 coated with a resistance film. The resistance film surface 301 faces the waveguide input port 201 to become a waveguide sputtering surface. One end of the attenuation plate extends out of the gap to connect a telescopic arm 4, and the telescopic arm 4 is connected to a driving motor 5. A control circuit 6 controls the driving motor 5 to drive the telescopic arm 4 to move up and down. The telescopic arm 4 that moves up and down drives the attenuation plate 3 to move up and down to achieve attenuation adjustment of the waveguide signal 203 passing through; the control circuit 6 is provided with a display screen 601 and a manual drive button 602, as well as a USB interface 603 and an Internet access port 604; the use of the resistance film surface 301 can increase the power-bearing capacity of the attenuator by withstanding high-power signals.

[0017] like Figure 1 As shown: the telescopic arm 4 includes an L-shaped right-angled connecting plate 401 and a telescopic column 402. The upper horizontal plate of the L-shaped right-angled connecting plate 401 is connected to the telescopic column 402. The lower end of the vertical plate of the L-shaped right-angled connecting plate 401 is connected to the attenuation plate 3. The telescopic column 402 is connected to the driving motor 5. The driving motor drives the telescopic column 402 to move up and down. The vertical plate of the L-shaped right-angled connecting plate 401 moves up and down in close contact with the supporting plate 6. The supporting plate 6 forms a guide plate for the vertical plate of the L-shaped right-angled connecting plate 401, which plays a role in stabilizing the telescopic arm 4.

[0018] Wherein: the driving motor 5 is a linear motor or a stepping motor. If it is a linear motor, the linear moving rotor of the linear motor drives the telescopic arm to move; if it is a stepping motor, the rotor of the stepping motor drives the telescopic arm to move through the nut and screw.

[0019] In the embodiment, the continuously adjustable high-power waveguide attenuator further comprises a chassis, such as Figure 5 As shown, the base is fixed in the chassis, the display screen 601 and the manual drive button 602 are arranged on the front panel of the chassis, the waveguide signal input port 201 and the waveguide signal output port 202 are respectively arranged on the two side walls of the chassis, and the USB interface 603 and the Internet port 604 are arranged on the rear end surface of the chassis.

[0020] The above-mentioned continuously adjustable high-power waveguide attenuator embodiment has visualization, convenient operability, high integration and simple structure; the attenuation part controls the attenuation of the signal by driving the metal attenuation plate up and down through a high-precision motor, wherein the attenuation plate is composed of a layer of resistive film sputtered on one side of a metal plate, which can improve the flatness of the attenuation and can withstand high-power signals to increase the attenuator's withstand power to more than 10W, greatly facilitating operation and saving time.

Claims

1. A continuously adjustable high-power waveguide attenuator, comprising a base, characterized in that: An attenuator cavity is arranged in the base, and the attenuator cavity is a cylindrical cavity, and the two ends of the cylindrical cavity are respectively a waveguide signal input port and a waveguide signal output port. A penetration gap is arranged on the side wall of the axial middle upper end of the cylindrical cavity, and an attenuation plate is inserted into the penetration gap. The attenuation plate is a metal plate, and one side plane of the metal plate is a resistance film surface coated with a resistance film, and the resistance film surface faces the waveguide input port to become a waveguide sputtering surface. One end of the attenuation plate extends out of the gap to connect a telescopic arm, and the telescopic arm is connected to a driving motor. A control circuit controls the driving motor to drive the telescopic arm to move up and down, and the telescopic arm that moves up and down drives the attenuation plate to move up and down to realize attenuation adjustment of the waveguide signal.

2. The continuously adjustable high-power waveguide attenuator according to claim 1, characterized in that: The telescopic arm includes an L-shaped connecting plate and a telescopic column. The upper horizontal plate of the L-shaped connecting plate is connected to the telescopic column. The lower end of the vertical plate of the L-shaped connecting plate is connected to the attenuation plate. The telescopic column is connected to a driving motor, and the driving motor drives the telescopic column to move up and down.

3. The continuously adjustable high-power waveguide attenuator according to claim 1 or 2, characterized in that: The driving motor is a linear motor or a stepping motor. If it is a linear motor, the linear moving rotor of the linear motor drives the telescopic arm to move; if it is a stepping motor, the rotor of the stepping motor drives the telescopic arm to move through a nut and a screw.

4. The continuously adjustable high-power waveguide attenuator according to claim 1, characterized in that: The control circuit is provided with a display screen and a manual drive button.

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