Q-band choke type dual-channel waveguide rotary joint

Abstract

The invention discloses a Q-band choke type dual-channel waveguide rotary joint which comprises a fixed end, a CH1 channel rotary end, a CH2 channel rotary end and a mounting assembly, and is characterized in that the fixed end comprises a flange plate outer conductor, waveguide mounting ports are coaxially formed in the two sides of the flange plate outer conductor, and waveguide mounting holes are formed in the two sides of the flange plate outer conductor; the mounting assembly comprises a fixing nut, a screw sleeve and a plurality of bearings, and a gasket is arranged between every two adjacent bearings; the CH1 channel rotating end and the CH2 channel rotating end are installed on the fixed end through the installation assembly, and good stability is provided during rotation in a non-contact clearance type installation mode, so that mechanical abrasion is reduced, and the service life is prolonged. The rotating end is installed in the fixed end through the installation assembly, loads are dispersed on a plurality of contact faces or supporting points of the rotating end, the stability and the load capacity of the waveguide rotating joint structure can be improved, the rotating end and the fixed end are installed in a clearance mode, and friction and abrasion caused by contact are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission technology, and in particular relates to a Q-band choke type dual-channel waveguide rotary joint. Background Art

[0002] The dual-channel waveguide rotary joint is a key component in satellite communications, wireless communications and radar systems for microwave and millimeter wave bands. It allows the waveguide or antenna to maintain the transmission of high-frequency signals while rotating, enabling the device to communicate or detect within a 360-degree range. The dual-channel waveguide rotary joint can effectively reduce mutual interference between signals and improve communication quality by using different frequencies or modes to separate signals. At the same time, it provides a more convenient infrastructure that can meet higher demands by adding new functions or services without having to make large-scale modifications to the existing structure.

[0003] If the waveguide rotating joint is overloaded, the pressure on the rotating end increases, causing friction points to form when moving with the fixed end, accelerating the wear of the rotating end and thus affecting the service life of the waveguide rotating joint. Summary of the invention

[0004] The present invention aims to solve the problem in the prior art that the rotating end of the waveguide rotating joint will be worn due to friction due to excessive load, and proposes the following technical solution:

[0005] A Q-band choke dual-channel waveguide rotating joint, comprising: a fixed end, a CH1 channel rotating end, a CH2 channel rotating end and a mounting assembly, wherein the fixed end comprises a flange outer conductor, waveguide mounting ports are coaxially arranged on both sides of the flange outer conductor, the CH1 channel rotating end and the CH2 channel rotating end are both rotatably plugged into the corresponding waveguide mounting ports through a gap mounting assembly, the mounting assembly comprises a fixing nut, a screw sleeve and a plurality of bearings, and a gasket is arranged between two adjacent bearings;

[0006] The CH1 channel rotating end and the CH2 channel rotating end are installed on the fixed end through the mounting assembly, and a non-contact gap mounting method is used to provide good stability during rotation, so as to reduce mechanical wear and extend service life.

[0007] As a preferred embodiment of the above technical solution, the CH1 channel rotating end includes a first outer conductor and a first inner conductor, the first outer conductor is rotated and inserted into the installation waveguide port through the position of the rotating axis, a first choke slot is formed between the rotating axis of the first outer conductor and the installation waveguide port, one end of the first inner conductor passes through the first outer conductor and extends into the flange outer conductor, and the first inner conductor is located at the inner surface of the first outer conductor and is provided with a first dielectric body for supporting the first outer conductor.

[0008] As a preferred embodiment of the above technical solution, a first installation cavity for installing the first inner conductor is coaxially arranged in the middle of the first outer conductor rotation axis, and the first outer conductor rotation axis is coaxially arranged with the installation waveguide cavity body.

[0009] As a preferred embodiment of the above technical solution, the rotating end of the CH2 channel includes a second outer conductor and a second inner conductor, the second outer conductor is rotated and inserted into the installation waveguide port through the position of the rotating axis, a second choke slot is formed between the rotating axis of the second outer conductor and the installation waveguide port, one end of the second inner conductor passes through the second outer conductor and extends into the flange outer conductor, and the second inner conductor is located at the inner surface of the second outer conductor and is provided with a second dielectric body for supporting the second outer conductor.

[0010] As a preferred embodiment of the above technical solution, a second installation cavity for installing the second inner conductor is coaxially arranged in the middle of the second outer conductor rotation axis, and the second outer conductor rotation axis is coaxially arranged with the installation waveguide cavity body.

[0011] As a preferred embodiment of the above technical solution, it further includes a tuning screw, the number of which is one or more, and the tuning screw is installed on the rotating end of the CH1 channel or the rotating end of the CH2 channel.

[0012] As a preferred embodiment of the above technical solution, the CH1 channel rotating end or the CH2 channel rotating end is integrally formed, and both the CH1 channel rotating end and the CH2 channel rotating end are made of high-temperature resistant and high-performance materials.

[0013] The beneficial effects of the present invention are:

[0014] The rotating end is installed into the fixed end using the installation assembly, and the load is dispersed on multiple contact surfaces or support points, which can improve the stability and load capacity of the waveguide rotating joint structure. The gap between the rotating end and the fixed end is installed, and the design of the choke slot ensures electrical tightness, providing good stability for the continuous rotation of the waveguide rotating joint structure to avoid friction and wear caused by contact. The inner conductor coaxially arranged in the installation cavity is supported by a high-temperature resistant dielectric body to ensure the coaxiality of the inner conductor in the coaxial cavity, so that the reflection of the product has better flatness, thereby reducing energy loss in the signal transmission process and improving the efficiency of the system. The dielectric body is made of high-temperature resistant material, which can maintain stable performance in a high temperature environment and is more suitable for harsh working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 What is shown is a schematic diagram of the overall structure of an embodiment;

[0016] Figure 2 Shown is a schematic assembly diagram of an embodiment.

[0017] In the figure: 11, flange outer conductor; 12, waveguide installation port; 21, first outer conductor; 22, first inner conductor; 23, first dielectric body; 24, first installation cavity; 31, second outer conductor; 32, second inner conductor; 33, second dielectric body; 34, second installation cavity; 41, bearing; 42, fixing nut; 43, screw sleeve; 44, gasket. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings of the specification.

[0019] Example

[0020] Figure 1-Figure 2 A Q-band choke dual-channel waveguide rotating joint includes: a fixed end, a CH1 channel rotating end, a CH2 channel rotating end and a mounting assembly, characterized in that the fixed end includes a flange outer conductor 11, both sides of the flange outer conductor 11 are coaxially provided with mounting waveguide ports 12, the CH1 channel rotating end and the CH2 channel rotating end are both rotatably plugged into the corresponding mounting waveguide ports 12 through a gap mounting assembly, the mounting assembly includes a fixing nut 42, a screw sleeve 43 and a plurality of bearings 41, and a gasket 44 is provided between two adjacent bearings 41;

[0021] The CH1 channel rotating end and the CH2 channel rotating end are installed on the fixed end through the mounting assembly, and a non-contact gap mounting method is used to provide good stability during rotation, so as to reduce mechanical wear and extend service life.

[0022] When the rotary joint needs to be assembled, first sleeve the screw sleeve 43 on the CH1 channel rotating end or the CH2 channel rotating end, then install the bearings 41 in turn, and install the gasket 44 between the two bearings 41. After the bearings 41 are installed, rotate the fixing nut 42 to limit and fix the bearing 41 on the CH1 channel rotating end or the CH2 channel rotating end. Hold the CH1 channel rotating end or the CH2 channel rotating end and insert its end into the installation waveguide port 12. Rotate the screw sleeve 43 to make it threadedly sleeved on the flange outer conductor 11. At this time, a certain gap is reserved between the CH1 channel rotating end or the CH2 channel rotating end and the surface of the installation waveguide port 12.

[0023] The rotating end is installed into the fixed end using the installation assembly, and the load is dispersed on multiple contact surfaces or support points, which can improve the stability and load capacity of the waveguide rotating joint structure. The gap between the rotating end and the fixed end is installed, and the design of the choke slot is used to ensure electrical tightness, providing good stability for the continuous rotation of the waveguide rotating joint structure and avoiding friction and wear caused by contact.

[0024] Figure 1-Figure 2 In the figure, the rotating end of the CH1 channel includes a first outer conductor 21 and a first inner conductor 22. The first outer conductor 21 is rotated and inserted into the installation waveguide port 12 through the position of the rotating axis. A first choke slot is formed between the rotating axis of the first outer conductor 21 and the installation waveguide port 12. One end of the first inner conductor 22 penetrates the first outer conductor 21 and extends into the flange outer conductor 11. The first inner conductor 22 is located at the inner surface of the first outer conductor 21 and is provided with a first dielectric body 23 for supporting the first outer conductor 21.

[0025] A first mounting cavity 24 for mounting the first inner conductor 22 is coaxially arranged in the middle of the rotation axis of the first outer conductor 21 , and the rotation axis of the first outer conductor 21 is coaxially arranged with the cavity of the mounting waveguide port 12 .

[0026] The rotating end of the CH2 channel includes a second outer conductor 31 and a second inner conductor 32. The second outer conductor 31 is rotated and inserted into the installation waveguide port 12 through the position of the rotating axis. A second choke slot is formed between the rotating axis of the second outer conductor 31 and the installation waveguide port 12. One end of the second inner conductor 32 penetrates the second outer conductor 31 and extends into the flange outer conductor 11. The second inner conductor 32 is located on the inner surface of the second outer conductor 31 and is provided with a second dielectric body 33 for supporting the second outer conductor 31.

[0027] A second mounting cavity 34 for mounting the second inner conductor 32 is coaxially arranged in the middle of the rotation axis of the second outer conductor 31 , and the rotation axis of the second outer conductor 31 is coaxially arranged with the cavity of the mounting waveguide port 12 .

[0028] The voltage standing wave ratio of the waveguide rotating joint is less than 1.5 in CH1:37.5-40GHz, and the insertion loss in its frequency band is less than 0.4dB; the voltage standing wave ratio of CH2:47.2-49.95GHz is less than 1.5, and the insertion loss in its frequency band is less than 0.4dB; the waveguide rotating joint has good stability and can rotate at any angle along the axis. During the angle change, the standing wave change is less than 0.05, and the insertion loss change is less than 0.05dB.

[0029] The inner conductor of the coaxial arrangement in the installation cavity is supported by a high-temperature resistant dielectric body to ensure the coaxiality of the inner conductor in the coaxial cavity, so that the reflection of the product has better flatness, thereby reducing the energy loss during signal transmission and improving the efficiency of the system. In addition, the dielectric body is made of high-temperature resistant material, which can maintain stable performance in a high-temperature environment and is more suitable for harsh working environments.

[0030] Figure 1-Figure 2 The invention also includes a tuning screw, wherein the number of the tuning screw is one or more, and the tuning screw is installed on the CH1 channel rotating end or the CH2 channel rotating end.

[0031] By adjusting the position of the tuning screw, high-precision frequency tuning can be achieved, optimal signal transmission and matching can be achieved, signal reflection and loss can be reduced, and assembly and debugging are simple, making it easy to achieve the electrical performance of the product.

[0032] Figure 1-Figure 2 In the embodiment, the CH1 channel rotating end or the CH2 channel rotating end is integrally formed, and both the CH1 channel rotating end and the CH2 channel rotating end are made of high-temperature resistant and high-performance materials.

[0033] The integrated processing method makes the entire microwave channel simpler, reduces the difficulty of assembly, reduces performance loss during operation, and has better stability when the ambient temperature changes and rotates.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A Q-band choke dual-channel waveguide rotary joint, comprising: A fixed end, a CH1 channel rotating end, a CH2 channel rotating end and an installation component, characterized in that the fixed end comprises a flange outer conductor (11), both sides of the flange outer conductor (11) are coaxially provided with installation waveguide ports (12), the CH1 channel rotating end and the CH2 channel rotating end are both rotatably plugged into the corresponding installation waveguide ports (12) through a gap installation component, the installation component comprises a fixing nut (42), a screw sleeve (43) and a plurality of bearings (41), and a gasket (44) is provided between two adjacent bearings (41); The CH1 channel rotating end and the CH2 channel rotating end are installed on the fixed end through the mounting assembly, and a non-contact gap mounting method is used to provide good stability during rotation, so as to reduce mechanical wear and extend service life.

2. A Q-band choke dual-channel waveguide rotary joint according to claim 1, characterized in that: The CH1 channel rotating end comprises a first outer conductor (21) and a first inner conductor (22); the first outer conductor (21) is inserted into the installation waveguide port (12) by rotating the rotation axis position; a first choke slot is formed between the rotation axis of the first outer conductor (21) and the installation waveguide port (12); one end of the first inner conductor (22) penetrates the first outer conductor (21) and extends into the flange outer conductor (11); and the first inner conductor (22) is provided with a first dielectric body (23) for supporting the first outer conductor (21) at a position on the inner surface of the first outer conductor (21).

3. A Q-band choke dual-channel waveguide rotary joint according to claim 2, characterized in that: A first installation cavity (24) for installing a first inner conductor (22) is coaxially arranged in the middle of the rotation axis of the first outer conductor (21); the rotation axis of the first outer conductor (21) is coaxially arranged with a cavity for installing a waveguide port (12).

4. A Q-band choke dual-channel waveguide rotary joint according to claim 3, characterized in that: The CH2 channel rotating end comprises a second outer conductor (31) and a second inner conductor (32); the second outer conductor (31) is inserted into the installation waveguide port (12) by rotating the rotation axis position; a second choke slot is formed between the rotation axis of the second outer conductor (31) and the installation waveguide port (12); one end of the second inner conductor (32) penetrates the second outer conductor (31) and extends into the flange outer conductor (11); and the second inner conductor (32) is provided with a second dielectric body (33) for supporting the second outer conductor (31) at a position on the inner surface of the second outer conductor (31).

5. A Q-band choke dual-channel waveguide rotary joint according to claim 4, characterized in that: A second installation cavity (34) for installing a second inner conductor (32) is coaxially arranged in the middle of the rotation axis of the second outer conductor (31); the rotation axis of the second outer conductor (31) is coaxially arranged with the cavity of the installation waveguide port (12).

6. A Q-band choke dual-channel waveguide rotary joint according to claim 1, characterized in that: It also includes a tuning screw, the number of which is one or more, and the tuning screw is installed on the CH1 channel rotating end or the CH2 channel rotating end.

7. A Q-band choke dual-channel waveguide rotary joint according to claim 2, characterized in that: The CH1 channel rotating end or the CH2 channel rotating end is integrally formed, and both the CH1 channel rotating end and the CH2 channel rotating end are made of high-temperature resistant and high-performance materials.

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