CN110994080B - Gap waveguide rotary joint combination - Google Patents
Gap waveguide rotary joint combination Download PDFInfo
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- CN110994080B CN110994080B CN201911334735.7A CN201911334735A CN110994080B CN 110994080 B CN110994080 B CN 110994080B CN 201911334735 A CN201911334735 A CN 201911334735A CN 110994080 B CN110994080 B CN 110994080B
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- slot waveguide
- cover plate
- rotary joint
- transmission line
- metal
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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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Abstract
The invention discloses a slot waveguide rotary joint which comprises slot waveguide transmission lines, metal columns, coaxial waveguide converters and metal cover plates, wherein the metal cover plates are arranged corresponding to a plurality of slot waveguide transmission lines, the slot waveguide transmission lines are arc-shaped waveguide transmission lines, two rows of metal columns which are equal in size and are distributed periodically are arranged on two sides of the wide side of each slot waveguide transmission line at equal intervals, the coaxial waveguide converters are arranged on the metal cover plates and the slot waveguide transmission lines, and the metal cover plates can movably rotate relative to the slot waveguide transmission lines; the slot waveguide rotary joint is used as a structural component, the multi-channel arrangement of the rotary joint can be realized, and the slot waveguide rotary joint is simple in structure, small in occupied volume and small in overall weight, and is beneficial to the use of a satellite platform.
Description
Technical Field
The invention relates to the technical field of rotary joint combinations, in particular to a slot waveguide rotary joint combination.
Background
In all mechanically scanned radars, the rotary joint is an essential key component thereof. When the radar antenna is searched in azimuth and pitching rotation, the rotary joint can continuously output electromagnetic wave signals with stable amplitude and phase so as to ensure the normal work of the radar. With the development of radar technology, the requirements for the rotary joint are higher and higher, and the requirements for small loss, low standing wave and high power are met, and the fluctuation of the amplitude, the phase and the standing wave of the rotary joint in the rotating process is required to be small enough.
In satellite communication systems, the communication antenna beam pointing direction is suitably adjusted with the satellite attitude or user position. For a single-beam antenna, the antenna can be realized by using a common rotary joint. However, when multiple beams are simultaneously adjusted, a multi-channel rotary joint is required.
In the prior art, a multi-channel rotary joint is realized, and a rotary joint combination is adopted. The rotary joint combination is formed by concentrically stacking a plurality of rotary joints, namely, one rotary joint is stacked on the upper edge of the other rotary joint; or the rotary joint is formed by concentrically nesting a plurality of rotary joints, namely one rotary joint is sleeved outside the other rotary joint; or a combination of both. The structure requires that each rotary joint is coaxial and sealed, has high requirement on machining precision, and becomes one of the design difficulties of the rotary joint. At present, the common domestic rotary joints are two-way and three-way, and the maximum is five-way. The multi-channel rotary joint has large volume and weight and is not beneficial to the use of a satellite platform.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the technical scheme adopted by the invention is that the slot waveguide rotary joint comprises a slot waveguide transmission line, metal columns, a coaxial waveguide converter and a metal cover plate, wherein the metal cover plate is arranged corresponding to a plurality of slot waveguide transmission lines, the slot waveguide transmission lines are arc-shaped waveguide transmission lines, two rows of metal columns which are equal in size and are distributed periodically are arranged on two sides of the wide side of each slot waveguide transmission line at equal intervals, the coaxial waveguide converter is arranged on the metal cover plate and the slot waveguide transmission lines, and the metal cover plate can movably rotate relative to the slot waveguide transmission lines.
Preferably, a matching block is arranged below a coaxial converter probe of the coaxial waveguide converter, the matching block is arranged to be a cylinder, and the radius of the matching block is larger than that of the coaxial converter probe.
Preferably, the coaxial waveguide converter is arranged on a central line of the slot waveguide transmission line; the coaxial waveguide converter comprises a transmission line converter and a cover plate converter, the transmission line converter is arranged on the slot waveguide transmission line, and the cover plate converter is arranged on the cover plate.
Preferably, the interface of the transmission line converter is arranged in a direction away from the metal cover plate, the short-circuit surface of the transmission line converter is a first metal surface which is lambda/4 away from the transmission line converter, the first metal surface is two rows of short-circuit metal posts which are equally spaced and equally sized, and the short-circuit metal posts are connected with the slot waveguide transmission line.
Preferably, the interface of the cover plate converter is arranged in a direction away from the slot waveguide transmission line, the short circuit surface of the cover plate converter is a second metal surface which is lambda/4 away from the cover plate converter, the second metal surface is provided with two rows of short circuit metal columns which are equally spaced and equally sized, and the short circuit metal columns are connected with the metal cover plate.
Preferably, the short-circuit metal column is set as a waveguide narrow edge with the side length of 1mm and the height of 0.85 times.
Preferably, the metal column is set as a waveguide narrow edge with the side length of 1mm and the height of 0.85 times.
Preferably, a sliding track of the transmission line converter rotating along with the metal cover plate is an arc line, and the sliding track and the curvature of the slot waveguide transmission line are the same.
Compared with the prior art, the invention has the beneficial effects that: the slot waveguide rotary joint is used as a structural component, the multi-channel arrangement of the rotary joint can be realized, and the slot waveguide rotary joint is simple in structure, small in occupied volume and small in overall weight, and is beneficial to the use of a satellite platform.
Drawings
FIG. 1 is a perspective view of the slot waveguide rotary joint;
FIG. 2 is a structural top view of the slot waveguide rotary joint;
FIG. 3 is a structural side view of the slot waveguide rotary joint;
FIG. 4 is a structural view of the slot waveguide rotary joint in the second embodiment;
FIG. 5 is a structural view of the metal cover plate in the second embodiment;
FIG. 6 is a structural view of the slot waveguide transmission line in a second embodiment;
FIG. 7 is a structural view of the slot waveguide rotary joint in the third embodiment;
FIG. 8 is a structural view of the metal cover plate in the third embodiment;
fig. 9 is a structural view of the slot waveguide transmission line in the third embodiment.
The figures in the drawings represent:
1-a slot waveguide transmission line; 2-a metal post; 3-a coaxial waveguide transformer; 4-a metal cover plate; 31-a transmission line transformer; 32-cover plate transducer; 51-a first metal face; 52-second metal face.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1, 2 and 3, fig. 1 is a perspective structural view of the slot waveguide rotary joint; FIG. 2 is a structural top view of the slot waveguide rotary joint; FIG. 3 is a structural side view of the slot waveguide rotary joint; the slot waveguide rotary joint comprises a slot waveguide transmission line 1, a metal column 2, a coaxial waveguide converter 3 and a metal cover plate 4.
The slot waveguide transmission line 1 is an arc waveguide transmission line, two rows of metal posts 2 which are equal in size and are distributed periodically are arranged on two sides of the wide side of the slot waveguide transmission line 1 at equal intervals respectively, and a slot waveguide structure capable of transmitting quasi-TEM waves is formed; wherein, the side length of the metal column 2 is 1mm, the height is about 0.85 times of the waveguide narrow edge, even if a gap is formed between the metal column 2 and the metal cover plate 4, no mechanical contact exists, so as to form the gap waveguide structure. The slot waveguide structure can transmit quasi-TEM waves, can inhibit the transmission of surface waves, and has low requirements on machining precision.
The metal cover plate 4 is located above the slot waveguide transmission line 1, the thickness of the metal cover plate 4 is set to be 1mm, and the metal cover plate can movably rotate. The metal cover plate 4 realizes mechanical rotation by an external bearing, and the electrical property of the rotary joint is not influenced.
A matching block is arranged below the coaxial converter probe of the coaxial waveguide converter 3, the matching block is arranged into a cylinder, and the radius of the matching block is larger than that of the coaxial converter probe.
Preferably, the coaxial waveguide converter 3 is arranged on the central line of the slot waveguide transmission line 1, and the distance from the short-circuit surface is set to be lambda/4; the coaxial waveguide transformer 3 includes a transmission line transformer 31 and a cover plate transformer 32.
Specifically, the transmission line converter 31 is located on the slot waveguide transmission line 1, the interface is set to be away from the metal cover plate 4, the short-circuit surface of the transmission line converter 31 is a first metal surface 51 on the slot waveguide transmission line 1 with a distance λ/4 from the transmission line converter 31, the first metal surface is two rows of short-circuit metal posts with equal spacing and equal size, and the short-circuit metal posts are connected with the slot waveguide transmission line.
The cover plate converter 32 is located on the metal cover plate 4, the interface is set to the direction far away from the slot waveguide transmission line 1, the short-circuit surface of the cover plate converter 32 is a second metal surface 52 which is lambda/4 away from the cover plate converter 32, the second metal surface 52 is set as two rows of short-circuit metal columns which are equal in distance and size, 1mm in side length and 0.85 times in height, the short-circuit metal columns are connected with the metal cover plate 4, so that a slot exists between the short-circuit metal columns and the bottom surface of the slot waveguide transmission line 1, and the cover plate converter 32 and the second metal surface 52 rotate together with the rotation of the metal cover plate 4.
The slot waveguide rotary joint is used as a structural component, the multi-channel arrangement of the rotary joint can be realized, and the slot waveguide rotary joint is simple in structure, small in occupied volume and small in overall weight, and is beneficial to the use of a satellite platform.
Example two
As shown in fig. 4, 5 and 6, (a) in fig. 4 is a structural plan view of the slot waveguide rotary joint in this embodiment; (b) the structural front view of the slot waveguide rotary joint in the embodiment is shown; fig. 5 (a) is a top view of the structure of the metal cover plate; (b) the structural front view of the metal cover plate is shown; fig. 6 (a) is a top view of the structure of the slot waveguide transmission line; (b) the structure front view of the slot waveguide transmission line is shown.
In this embodiment, the slot waveguide rotary joint is configured as nine channels, the slot waveguide transmission line 1 is an arc transmission line, the cover plate converter 32 and the corresponding second metal surface 52 are located on the metal cover plate 4 and can rotate together with the rotation of the metal cover plate 4, and the rotation track of the cover plate converter 32 can be from a to B.
In the embodiment, the number of the channels is nine, the number of the inner ring is three, the number of the outer ring is six, the sliding track of each channel is an arc line, the curvatures of the sliding track and the curvature of the slot waveguide transmission line are the same, and the sliding angle of each channel is 35 degrees.
EXAMPLE III
As shown in fig. 7, 8 and 9, (a) in fig. 7 is a structural plan view of the slot waveguide rotary joint in this embodiment; (b) the structural front view of the slot waveguide rotary joint in the embodiment is shown; fig. 8 (a) is a top view of the structure of the metal cover plate; (b) the structural front view of the metal cover plate is shown; fig. 9 (a) is a top view of the structure of the slot waveguide transmission line; (b) the structure front view of the slot waveguide transmission line is shown.
In this embodiment, the slot waveguide rotary joint is provided with two channels of an inner ring and an outer ring. The slot waveguide transmission line 1 is approximately circular, two rows of the metal posts 2 with equal space and equal size are distributed on two sides of a wide side, the two cover plate converters 32 and the second metal surface 52 are positioned on the metal cover plate 4 and can rotate along with the rotation of the metal cover plate 4, the rotation track can rotate from A to B at a large angle, and the rotation track can rotate at a maximum angle of 320 degrees.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A slot waveguide rotary joint is characterized by comprising slot waveguide transmission lines, metal columns, coaxial waveguide converters and a metal cover plate, wherein the metal cover plate is arranged corresponding to a plurality of the slot waveguide transmission lines, the slot waveguide transmission lines are arc-shaped waveguide transmission lines, two rows of the metal columns which are equal in size and are distributed periodically are arranged on two sides of the wide side of each slot waveguide transmission line at equal intervals, the coaxial waveguide converters are arranged on the metal cover plate and the slot waveguide transmission lines, and the metal cover plate can movably rotate relative to the slot waveguide transmission lines;
the coaxial waveguide converter is arranged on the central line of the slot waveguide transmission line; the coaxial waveguide converter comprises a transmission line converter and a cover plate converter, the transmission line converter is arranged on the slot waveguide transmission line, and the cover plate converter is arranged on the cover plate.
2. A slot waveguide rotary joint according to claim 1, wherein a matching block is arranged below a coaxial transducer probe of the coaxial waveguide transducer, the matching block is arranged as a cylinder, and the radius of the matching block is larger than that of the coaxial transducer probe.
3. The slot waveguide rotary joint of claim 1, wherein the interface of the transmission line transformer is disposed in a direction away from the metal cover plate, and the short-circuited face of the transmission line transformer is a first metal face λ/4 from the transmission line transformer.
4. The slot waveguide rotary joint according to claim 3, wherein an interface of the cover plate converter is disposed in a direction away from the slot waveguide transmission line, and the short-circuited surface of the cover plate converter is a second metal surface λ/4 from the cover plate converter.
5. A slot waveguide rotary joint as claimed in claim 1 wherein the metal posts are arranged to have a side length of 1mm and a height of 0.85 times the length of the narrow side of the waveguide.
6. The slot waveguide rotary joint of claim 1, wherein a sliding track of the transmission line transformer rotating with the metal cover plate is an arc line, and the sliding track and the slot waveguide transmission line have the same curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911334735.7A CN110994080B (en) | 2019-12-19 | 2019-12-19 | Gap waveguide rotary joint combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911334735.7A CN110994080B (en) | 2019-12-19 | 2019-12-19 | Gap waveguide rotary joint combination |
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| Publication Number | Publication Date |
|---|---|
| CN110994080A CN110994080A (en) | 2020-04-10 |
| CN110994080B true CN110994080B (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911334735.7A Active CN110994080B (en) | 2019-12-19 | 2019-12-19 | Gap waveguide rotary joint combination |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2023551774A (en) | 2020-12-08 | 2023-12-13 | フーバー ＋ スーナー アーゲー | antenna device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2453518A1 (en) * | 2010-11-12 | 2012-05-16 | Powerwave Finland Oy | Adaptable resonator filter |
| CN205069817U (en) * | 2015-10-12 | 2016-03-02 | 九江精达检测技术有限公司 | Microminiature microwave rotary joint |
| CN108923103A (en) * | 2018-08-23 | 2018-11-30 | 中国电子科技集团公司第五十四研究所 | A kind of Coaxial rotary joint |
| CN109687057A (en) * | 2019-01-24 | 2019-04-26 | 中国人民解放军国防科技大学 | Rectangular waveguide H-surface rotary joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9413049B2 (en) * | 2014-03-24 | 2016-08-09 | Raytheon Company | Rotary joint including first and second annular parts defining annular waveguides configured to rotate about an axis of rotation |
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2019
- 2019-12-19 CN CN201911334735.7A patent/CN110994080B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2453518A1 (en) * | 2010-11-12 | 2012-05-16 | Powerwave Finland Oy | Adaptable resonator filter |
| CN205069817U (en) * | 2015-10-12 | 2016-03-02 | 九江精达检测技术有限公司 | Microminiature microwave rotary joint |
| CN108923103A (en) * | 2018-08-23 | 2018-11-30 | 中国电子科技集团公司第五十四研究所 | A kind of Coaxial rotary joint |
| CN109687057A (en) * | 2019-01-24 | 2019-04-26 | 中国人民解放军国防科技大学 | Rectangular waveguide H-surface rotary joint |
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| Publication number | Publication date |
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| CN110994080A (en) | 2020-04-10 |
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