CN117477189A - Satellite-borne V-band broadband waveguide rotary joint - Google Patents
Satellite-borne V-band broadband waveguide rotary joint Download PDFInfo
- Publication number
- CN117477189A CN117477189A CN202311577533.1A CN202311577533A CN117477189A CN 117477189 A CN117477189 A CN 117477189A CN 202311577533 A CN202311577533 A CN 202311577533A CN 117477189 A CN117477189 A CN 117477189A
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- Prior art keywords
- waveguide
- rotor
- stator
- circular
- coaxial
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- 239000004020 conductor Substances 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/06—Movable joints, e.g. rotating joints
- H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/06—Coaxial lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/082—Transitions between hollow waveguides of different shape, e.g. between a rectangular and a circular waveguide
Landscapes
- Waveguide Connection Structure (AREA)
Abstract
The invention relates to a satellite-borne V-band broadband waveguide rotary joint, which comprises a stator straight waveguide, a rotor bent waveguide and a middle fixed connecting part, wherein the stator straight waveguide is connected with the rotor bent waveguide; the stator straight waveguide is connected with the rotor bent waveguide through the middle fixed connecting part, and the stator straight waveguide and the rotor bent waveguide are both provided with compact round platform step structures for converting a TEM mode into a TM01 mode. The choke groove is designed in the rotor circular waveguide, and a specific transmission channel is a mode conversion structure of rotor rectangular waveguide TE10 mode, rotor coaxial medium sleeve section TEM mode, rotor circular waveguide TMO1 mode, stator coaxial medium sleeve section TEM mode and stator rectangular waveguide TE10 mode, so that the problem that the bandwidth of the axial circular waveguide serving as a rotating part is narrow is solved, and the electric performance is excellent; meanwhile, the ridge waveguide structure is used for optimizing the electrical performance, and the broadband requirement of the array surface can be met by adopting the effective combination of the mode.
Description
Technical Field
The invention relates to the technical field of microwave communication, in particular to a satellite-borne V-band broadband waveguide rotary joint.
Background
Along with the improvement and widening of the frequency of the radar antenna, the application frequency band of the radar antenna gradually extends from the Ku frequency band, the K frequency band and the Ka frequency band to the higher frequency band, the application of the frequency band above the millimeter wave is more and more extensive at present, the corresponding parts are required to have the characteristics of compact size and high precision requirement, the function of the rotary joint is to ensure the normal transmission of electromagnetic energy in a feeder system under the condition that the antenna rotates, and the rotary joint is used as a feed mechanism of a mechanical scanning radar, and provides the requirements of miniaturization, high frequency and broadband to meet the use requirements of the radar antenna system. The existing L-shaped rotary joint has the defects that the coaxial inner conductor and the coaxial outer conductor are provided with choke grooves, the inner conductor and the outer conductor are mechanically separated and disconnected at the choke grooves, and relative rotation is realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a space-borne V-band broadband waveguide rotary joint, wherein a choke groove is designed in a rotor circular waveguide, a specific transmission channel is a rotor rectangular waveguide TE10 mode, a rotor coaxial medium sleeve section TEM mode, a rotor circular waveguide TMO1 mode, a stator coaxial medium sleeve section TEM mode and a stator rectangular waveguide TE10 mode conversion structure, so that the problem that the bandwidth of the circular waveguide as a rotary part is narrow is solved, and the electrical property is excellent; meanwhile, the ridge waveguide structure is used for optimizing the electrical performance, and the broadband requirement of the array surface can be met by adopting the effective combination of the mode.
In order to solve the problems in the background art, the invention is realized by the following technical scheme:
a satellite-borne V-band broadband waveguide rotary joint comprises a stator straight waveguide, a rotor bent waveguide and a middle fixed connecting part; the stator straight waveguide is connected with the rotor bent waveguide through the middle fixed connecting part, and the stator straight waveguide and the rotor bent waveguide are both provided with compact round platform step structures for converting a TEM mode into a TM01 mode.
Preferably, the stator straight waveguide comprises a stator circular waveguide, a stator rectangular waveguide and a stator coaxial section, one end of the stator coaxial section is connected with the stator rectangular waveguide, and the other end of the stator coaxial section is connected with the middle fixed connecting part through the stator circular waveguide; a stator inner conductor is arranged in the stator rectangular waveguide; one end of the middle fixed connecting part is provided with an opening, the other end of the middle fixed connecting part is provided with a connecting port, and the stator circular waveguide extends into the connecting port, is connected with the middle fixed connecting part and is fixed through a fixing nut; the rotor bent waveguide comprises a rotor circular waveguide, a rotor rectangular waveguide and a rotor coaxial section, wherein one end of the rotor circular waveguide extends into the middle fixed connection part from the opening, is fixed through a locking nut and is abutted against the stator inner conductor; the rotor coaxial section is arranged at the other end of the rotor circular waveguide; the fixed nut is sleeved with a protective washer.
Preferably, one end of the stator inner conductor is provided with a stator coaxial medium sleeve, and the stator coaxial medium sleeve is positioned at the stator coaxial section; the other end of the stator inner conductor is provided with a compact round bench structure, the stator inner conductor is axially positioned with the stator straight waveguide through the stator coaxial medium sleeve, and the stator coaxial medium sleeve is fixed with the stator straight waveguide in a threaded or welded mode and is abutted to the rotor round waveguide.
Preferably, a ridge waveguide structure is further arranged in the stator rectangular waveguide, and the ridge waveguide structure is arranged at the compact truncated cone-shaped step structure.
Preferably, an inner bearing and an outer bearing are arranged in the middle fixed connection part, an inner gasket is arranged between the inner bearing and the outer bearing, an outer gasket is sleeved on the inner gasket, and the rotor circular waveguide sequentially passes through the lock nut, the outer bearing, the inner gasket, the inner bearing and the fixing nut to be in butt joint with the stator coaxial medium sleeve.
Preferably, one end of the rotor rectangular waveguide is connected and fastened with the rotor circular waveguide through a nut, and the other end of the rotor rectangular waveguide is provided with a fixed pin; one end of the rotor circular waveguide is connected with the rotor rectangular waveguide, a choke groove is arranged at the other end of the rotor circular waveguide, and the rotor circular waveguide passes through the middle fixed connection part and is abutted to the stator coaxial medium sleeve.
Preferably, a rotor inner conductor is arranged in the rotor circular waveguide, a rotor coaxial medium sleeve is sleeved at one end of the rotor inner conductor, the rotor coaxial medium sleeve is positioned at the rotor coaxial section, and a compact circular truncated cone step structure is arranged at the other end of the rotor inner conductor.
Preferably, a ridge waveguide structure is further arranged in the rotor rectangular waveguide, and the ridge waveguide structure is arranged at the joint of the rotor rectangular waveguide and the rotor circular waveguide.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the choke groove is designed in the rotor circular waveguide, and a specific transmission channel is a mode conversion structure of rotor rectangular waveguide TE10 mode, rotor coaxial medium sleeve section TEM mode, rotor circular waveguide TMO1 mode, stator coaxial medium sleeve section TEM mode and stator rectangular waveguide TE10 mode, so that the problem that the coaxial circular waveguide is used as a rotating part to be narrow in bandwidth is solved, and the electric performance is excellent; meanwhile, the ridge waveguide structure is used for optimizing the electrical performance, and the broadband requirement of the array surface can be met by adopting the effective combination of the modes;
2. an inner conductor is arranged in the stator rectangular waveguide and the rotor circular waveguide, and a coaxial medium sleeve is added to the inner conductor for supporting and positioning, so that concentricity and assembly precision are improved, and the power capacity of a coaxial section is effectively improved;
3. the rotary joint has good electrical index, can be applied to a high-frequency microwave transmission system of 40GHz-80Ghz, has 15% relative bandwidth, and has the return loss of the product better than 20dB and the loss better than 0.2dB in the use bandwidth.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic exploded view of a stator straight waveguide of the present invention;
FIG. 3 is a schematic view of the structure of a rotor curved waveguide of the present invention;
FIG. 4 is a simulation graph of inventive product 1;
fig. 5 is a simulation graph of inventive product 2.
The drawings are marked with the following description:
1. a stator straight waveguide; 2. a stator inner conductor; 3. a stator coaxial medium sleeve; 4. a fixing nut; 5. a protective gasket; 6. an outer gasket; 7. an inner gasket; 8. an inner bearing; 81. an outer bearing; 9. a lock nut; 10. a rotor curved waveguide; 11. a rotor circular waveguide; 12. a rotor inner conductor; 121. a rotor coaxial medium sleeve; 13. fixing pins; 14. a nut; 15. compact round bench structure; 16. a middle fixed connection part; 17. a stator rectangular waveguide; 18. a rotor rectangular waveguide; 19. a choke groove; 20. a stator circular waveguide; 30. a stator coaxial section; 50. and a rotor coaxial section.
Detailed Description
As shown in fig. 1-3, a satellite-borne V-band broadband waveguide rotary joint comprises a stator straight waveguide 1, a rotor curved waveguide 10 and a middle fixed connection part 16; the stator straight waveguide 1 is connected with the rotor curved waveguide 10 through the middle fixed connection part 16, and the stator straight waveguide 1 and the rotor curved waveguide 10 are both provided with a compact circular step structure 15 for converting a TEM mode into a TM01 mode.
The stator straight waveguide 1 comprises a stator circular waveguide 20, a stator rectangular waveguide 17 and a stator coaxial section 30, one end of the stator coaxial section 30 is connected with the stator rectangular waveguide 17, and the other end of the stator coaxial section 30 is connected with the middle fixed connecting part 16 through the stator circular waveguide 20; a stator inner conductor 2 is arranged in the stator rectangular waveguide 17; one end of the middle fixed connecting part 16 is provided with an opening, the other end of the middle fixed connecting part 16 is provided with a connecting port, and the stator circular waveguide 20 extends into the connecting port, is connected with the middle fixed connecting part 16 and is fixed through the fixing nut 4; the rotor curved waveguide 10 comprises a rotor circular waveguide 11, a rotor rectangular waveguide 18 and a rotor coaxial section 50, wherein one end of the rotor circular waveguide 11 extends into the middle fixed connecting part 16 from the opening, is fixed through the locking nut 9 and is abutted against the stator inner conductor 2; the other end of the rotor circular waveguide 11 is provided with a rotor coaxial section 50; the fixed nut 4 is sleeved with a protective washer 5.
One end of the stator inner conductor 2 is provided with a stator coaxial medium sleeve 3, and the stator coaxial medium sleeve 3 is positioned at the stator coaxial section 30; the other end of the stator inner conductor 2 is provided with a compact round bench structure 15, the stator inner conductor 2 is axially positioned with the stator straight waveguide 1 through a stator coaxial medium sleeve 3, and the stator coaxial medium sleeve 3 is fixed with the stator straight waveguide 1 in a threaded or welded mode and is abutted against the rotor round waveguide 11.
A ridge waveguide structure is further arranged in the stator rectangular waveguide 17, and the ridge waveguide structure is arranged at the compact round bench structure 15.
An inner bearing 8 and an outer bearing 81 are arranged in the middle fixed connecting part 16, an inner gasket 7 is arranged between the inner bearing 8 and the outer bearing 81, an outer gasket 6 is sleeved on the inner gasket 7, and the rotor circular waveguide 11 sequentially passes through the lock nut 9, the outer bearing 81, the inner gasket 7, the inner bearing 8 and the fixing nut 4 to be abutted against the stator coaxial medium sleeve 3.
One end of the rotor rectangular waveguide 18 is fixedly connected with the rotor circular waveguide 11 through a nut 14, and the other end of the rotor rectangular waveguide 18 is provided with a fixed pin 13; one end of the rotor circular waveguide 11 is connected with the rotor rectangular waveguide 18, the other end of the rotor circular waveguide 11 is provided with a choke groove 19, and the rotor circular waveguide 11 passes through the middle fixed connecting part 16 to be abutted with the stator coaxial medium sleeve 3.
The rotor circular waveguide 11 is internally provided with a rotor inner conductor 12, one end of the rotor inner conductor 12 is sleeved with a rotor coaxial medium sleeve 121, the rotor coaxial medium sleeve 121 is positioned at the rotor coaxial section 50, and the other end of the rotor inner conductor 12 is provided with a compact circular step structure 15.
A ridge waveguide structure is further arranged in the rotor rectangular waveguide 18, and the ridge waveguide structure is arranged at the joint of the rotor rectangular waveguide 18 and the rotor circular waveguide 11.
As shown in fig. 4-5, through electrical simulation experiments, it can be seen that the reflection of the product 1 and the product 2 produced by the invention is better than 1.25 in the use frequency band.
Claims (8)
1. The satellite-borne V-band broadband waveguide rotary joint is characterized by comprising a stator straight waveguide (1), a rotor bent waveguide (10) and a middle fixed connecting part (16); the stator straight waveguide (1) is connected with the rotor bent waveguide (10) through the middle fixed connecting part (16), and the stator straight waveguide (1) and the rotor bent waveguide (10) are both provided with compact circular step structures (15) for converting a TEM mode into a TM01 mode.
2. The satellite-borne V-band broadband waveguide rotary joint according to claim 1, wherein the stator straight waveguide (1) comprises a stator circular waveguide (20), a stator rectangular waveguide (17) and a stator coaxial section (30), one end of the stator coaxial section (30) is connected with the stator rectangular waveguide (17), and the other end of the stator coaxial section (30) is connected with the middle fixed connection part (16) through the stator circular waveguide (20); a stator inner conductor (2) is arranged in the stator rectangular waveguide (17); one end of the middle fixed connecting part (16) is provided with an opening, the other end of the middle fixed connecting part (16) is provided with a connecting port, and the stator circular waveguide (20) stretches into the connecting port, is connected with the middle fixed connecting part (16) and is fixed through a fixing nut (4); the rotor bent waveguide (10) comprises a rotor circular waveguide (11), a rotor rectangular waveguide (18) and a rotor coaxial section (50), wherein one end of the rotor circular waveguide (11) extends into the middle fixed connection part (16) from the opening, is fixed through a locking nut (9) and is abutted with the stator inner conductor (2); the other end of the rotor circular waveguide (11) is provided with the rotor coaxial section (50); the fixing nut (4) is sleeved with a protection washer (5).
3. The spaceborne V-band broadband waveguide rotary joint according to claim 2, wherein one end of the stator inner conductor (2) is provided with a stator coaxial medium sleeve (3), and the stator coaxial medium sleeve (3) is positioned at the stator coaxial section (30); the stator inner conductor (2) is provided with a compact circular step structure (15) at the other end, the stator inner conductor (2) is axially positioned with the stator straight waveguide (1) through the stator coaxial medium sleeve (3), and the stator coaxial medium sleeve (3) is fixed with the stator straight waveguide (1) in a threaded or welded mode and is abutted to the rotor circular waveguide (11).
4. The spaceborne V-band broadband waveguide rotary joint according to claim 3, wherein a ridge waveguide structure is further arranged in the stator rectangular waveguide (17), and the ridge waveguide structure is arranged at a compact circular step structure (15).
5. The spaceborne V-band broadband waveguide rotary joint according to claim 2, wherein an inner bearing (8) and an outer bearing (81) are arranged in the middle fixed connection part (16), an inner gasket (7) is arranged between the inner bearing (8) and the outer bearing (81), an outer gasket (6) is sleeved on the inner gasket (7), and the rotor circular waveguide (11) sequentially passes through the lock nut (9), the outer bearing (81), the inner gasket (7), the inner bearing (8) and the fixing nut (4) to be abutted with the stator coaxial medium sleeve (3).
6. The satellite-borne V-band broadband waveguide rotary joint according to claim 2, wherein one end of the rotor rectangular waveguide (18) is fixedly connected with the rotor circular waveguide (11) through a nut (14), and a fixed pin (13) is arranged at the other end of the rotor rectangular waveguide (18); one end of the rotor circular waveguide (11) is connected with the rotor rectangular waveguide (18), a choke groove (19) is formed in the other end of the rotor circular waveguide (11), and the rotor circular waveguide (11) passes through the middle fixed connecting part (16) to be abutted to the stator coaxial medium sleeve (3).
7. The satellite-borne V-band broadband waveguide rotary joint according to claim 6, wherein a rotor inner conductor (12) is arranged in the rotor circular waveguide (11), a rotor coaxial medium sleeve (121) is sleeved at one end of the rotor inner conductor (12), the rotor coaxial medium sleeve (121) is positioned at the rotor coaxial section (50), and a compact circular step structure (15) is arranged at the other end of the rotor inner conductor (12).
8. The spaceborne V-band broadband waveguide rotary joint according to claim 7, wherein a ridge waveguide structure is further arranged in the rotor rectangular waveguide (18), and the ridge waveguide structure is arranged at the joint of the rotor rectangular waveguide (18) and the rotor circular waveguide (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311577533.1A CN117477189A (en) | 2023-11-23 | 2023-11-23 | Satellite-borne V-band broadband waveguide rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311577533.1A CN117477189A (en) | 2023-11-23 | 2023-11-23 | Satellite-borne V-band broadband waveguide rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117477189A true CN117477189A (en) | 2024-01-30 |
Family
ID=89625556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311577533.1A Pending CN117477189A (en) | 2023-11-23 | 2023-11-23 | Satellite-borne V-band broadband waveguide rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117477189A (en) |
-
2023
- 2023-11-23 CN CN202311577533.1A patent/CN117477189A/en active Pending
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