CN107039714B - Inclined plane coupling broadband rotary joint - Google Patents
Inclined plane coupling broadband rotary joint Download PDFInfo
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- CN107039714B CN107039714B CN201710315014.6A CN201710315014A CN107039714B CN 107039714 B CN107039714 B CN 107039714B CN 201710315014 A CN201710315014 A CN 201710315014A CN 107039714 B CN107039714 B CN 107039714B
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- Prior art keywords
- inclined plane
- rotary joint
- coupling
- feed
- radio frequency
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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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- Near-Field Transmission Systems (AREA)
- Waveguide Connection Structure (AREA)
Abstract
The invention discloses an inclined plane coupling broadband rotary joint, which comprises a radio frequency connector, a feed network, an inclined plane coupler, a coupling cavity, a choke groove, a feed metal rod, a medium support, a bearing and the like, wherein the inclined plane coupling broadband rotary joint is of a symmetrical structure, and each side of the inclined plane coupling broadband rotary joint is respectively composed of the radio frequency connector, the feed network, the medium support and the like; the feed network is arranged in the radio frequency connector, a pair of feed metal rods is connected with the radio frequency connector, the medium support is arranged between the coupling cavity and the inclined plane coupler, and the feed metal rods penetrate through the inside of the choke groove. The inclined plane coupling broadband rotary joint has the advantages that radio-frequency signals at one end pass through the feed network, the feed metal rod uniformly feeds electromagnetic signals to one coupling ring in the inclined plane coupler, the other coupling ring coupled with the coupling ring synthesizes the coupled electromagnetic signals through the feed network and then sends the coupled electromagnetic signals to the signal output port, and the inner conductor and the outer conductor realize non-contact of two vertically symmetrical structures through the gap choke groove structure, so that the functional requirements that the rotary joint can rotate structurally and electric signals are kept continuous are met.
Description
Technical Field
The invention relates to the technical field of communication engineering, in particular to an inclined plane coupling broadband rotary joint.
Background
Although the contact type rotary joint which is frequently used at the present stage has the characteristics of wide bandwidth, small volume and the like, when the contact type rotary joint is worn and operated for a long time, the phenomenon that the rotation moment is increased and the rotation is not flexible due to abrasion and deformation can occur. The elastic connection waveguide is used as a self-friction rotation and axial clearance elimination element, and the electrical property is reduced due to easy abrasion of a contact part in long-term transmission. The rotary joint has high precision requirement, and certain difficulty exists in the processing and production process.
In the structural design of the rotary joint, not only the structural motion requirements are required to be met, but also more importantly, the electrical performance requirements are met and the stability of microwave transmission signals is further improved.
Disclosure of Invention
The invention provides an inclined plane coupling broadband rotary joint which has the advantages of small volume, light weight, working relative bandwidth of 38.1 percent and higher power bearing, adopts an inclined plane coupling ring structure for coupling, can reduce the radial dimension of the rotary joint, and has relative working frequency band exceeding 38.1 percent.
An inclined plane coupling broadband rotary joint comprises a radio frequency connector, a feed network, an inclined plane coupler, a coupling cavity, a choke groove, a feed metal rod, a medium support, a bearing and the like, wherein the inclined plane coupling broadband rotary joint is of a symmetrical structure, and each side of the inclined plane coupling broadband rotary joint is respectively composed of the radio frequency connector, the feed network, the medium support and the like; the feed network is arranged in the radio frequency connector, a pair of feed metal rods is connected with the radio frequency connector, the medium support is arranged between the coupling cavity and the inclined plane coupler, and the feed metal rods penetrate through the inside of the choke groove.
The inclined plane coupler is composed of a pair of coupling rings, is fixedly installed in the middle of the feed metal rod and is installed at an acute angle with the feed metal rod, and the feed metal rod is respectively connected with the feed network.
Preferably, coaxial lines, circular waveguides and axisymmetric 0dB couplers are used. The electromagnetic field mode of the transmission line of the rotary joint is generally required to have axial symmetry, and a coaxial line, a circular waveguide and an axisymmetric 0dB coupler are generally selected. The invention is based on the axisymmetric 0dB coupler, and has the advantages of small volume and large power capacity compared with the rotary joints of the same type.
Preferably, the center of the rotary joint is provided with a round hole with the diameter of 25mm, so that the rotary joint can be conveniently stacked in multiple ways to form a rotary combination.
Preferably, the feed network adopts an air plate line structure, and has larger power capacity and smaller loss; the beveled coupling ring is also reduced in size compared to the coupling sleeve.
The inclined plane coupling broadband rotary joint has the advantages that radio-frequency signals at one end pass through the feed network, the feed metal rod uniformly feeds electromagnetic signals to one coupling ring in the inclined plane coupler, the other coupling ring coupled with the coupling ring synthesizes the coupled electromagnetic signals through the feed network and then sends the coupled electromagnetic signals to the signal output port, and the inner conductor and the outer conductor realize non-contact of two vertically symmetrical structures through the gap choke groove structure, so that the functional requirements that the rotary joint can rotate structurally and electric signals are kept continuous are met.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
FIG. 2 is a front view of the present invention
Wherein: the feed network is 1, the medium support is 2, the coupling cavity is 3, the inclined plane coupler is 4, the choke groove is 5, the bearing is 6, the radio frequency connector is 7, and the feed metal rod is 8.
Detailed Description
The invention is further illustrated by the following specific examples:
an inclined plane coupling broadband rotary joint comprises a radio frequency connector 7, a feed network 1, an inclined plane coupler 4, a coupling cavity 3, a choke groove 5, a feed metal rod 8, a medium support 2, a bearing 6 and the like, wherein the inclined plane coupling broadband rotary joint is of a symmetrical structure, and each side of the inclined plane coupling broadband rotary joint is respectively composed of the radio frequency connector 7, the feed network 1, the medium support 2 and the like; the feed network 1 is arranged in a radio frequency connector 7 and is connected with the radio frequency connector 7 by a pair of feed metal rods 8, the medium support 2 is arranged between the coupling cavity 3 and the inclined plane coupler 4, and the feed metal rods 8 penetrate through the interior of the choke groove 5.
The inclined plane coupling broadband rotary joint, the radio frequency signal passes through the feed network 1, is fed to a coupling ring in the inclined plane coupler 4 by the feed metal rod 8 evenly, the coupling ring coupled with the coupling ring synthesizes the coupling electromagnetic signal by the feed network and then sends the coupling electromagnetic signal to the signal output port, and simultaneously, the inner conductor and the outer conductor realize that two vertical symmetrical structures are not contacted through the structure of the gap choke groove 5, thereby meeting the functional requirements that the rotary joint can rotate structurally and the electric signal keeps continuous.
Claims (3)
1. An inclined plane coupling broadband rotary joint is characterized in that: the feed circuit comprises a radio frequency connector, a feed network, an inclined plane coupler, a coupling cavity, a choke groove, a feed metal rod and a medium support; the inclined plane coupling broadband rotary joint is of a symmetrical structure, and each side of the inclined plane coupling broadband rotary joint is formed by a radio frequency connector, a feed network and a medium support; the feed network is arranged in the radio frequency connector; the medium support is arranged between the coupling cavity and the inclined plane coupler, and the feed metal rod penetrates through the interior of the choke groove;
the inclined plane coupler is composed of a pair of coupling rings, the pair of coupling rings are respectively and fixedly installed on the pair of feed metal rods and form an acute angle with the feed metal rods, and the pair of feed metal rods are respectively connected with the pair of feed networks;
the transmission line of the rotary joint adopts a coaxial line, a circular waveguide or an axisymmetric 0dB coupler.
2. The bevel-coupled wideband rotary joint of claim 1, wherein the center of the rotary joint has a circular hole with a diameter of 25 mm.
3. The bevel-coupled wideband rotary joint of claim 1, wherein the feed network employs an air plate-line structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315014.6A CN107039714B (en) | 2017-05-07 | 2017-05-07 | Inclined plane coupling broadband rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315014.6A CN107039714B (en) | 2017-05-07 | 2017-05-07 | Inclined plane coupling broadband rotary joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107039714A CN107039714A (en) | 2017-08-11 |
| CN107039714B true CN107039714B (en) | 2020-09-18 |
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ID=59536987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710315014.6A Active CN107039714B (en) | 2017-05-07 | 2017-05-07 | Inclined plane coupling broadband rotary joint |
Country Status (1)
| Country | Link |
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| CN (1) | CN107039714B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023146A (en) * | 2017-11-30 | 2018-05-11 | 北京无线电测量研究所 | A kind of disk rotary joint |
| CN112290173B (en) * | 2020-10-12 | 2021-07-20 | 盐城市星地通信设备有限公司 | Contact type gapless waveguide rotary joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988963A (en) * | 1989-02-23 | 1991-01-29 | Dx Antenna Company, Limited | High frequency coaxial line coupling device |
| JPH08181503A (en) * | 1994-12-21 | 1996-07-12 | Nec Eng Ltd | Control signal transmission system for rotary antenna system |
| CN1441976A (en) * | 2000-05-10 | 2003-09-10 | 传感技术有限公司 | Improve rotary signal coupler |
| CN106129541A (en) * | 2016-07-19 | 2016-11-16 | 中国电子科技集团公司第三十八研究所 | A kind of U-shaped broadband coaxial rotary joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006079B (en) * | 2014-05-07 | 2016-04-20 | 西安理工大学 | The Halbach taper Permanent-magnet bearing that triangular-section permanent-magnetic clamp is formed |
-
2017
- 2017-05-07 CN CN201710315014.6A patent/CN107039714B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988963A (en) * | 1989-02-23 | 1991-01-29 | Dx Antenna Company, Limited | High frequency coaxial line coupling device |
| JPH08181503A (en) * | 1994-12-21 | 1996-07-12 | Nec Eng Ltd | Control signal transmission system for rotary antenna system |
| CN1441976A (en) * | 2000-05-10 | 2003-09-10 | 传感技术有限公司 | Improve rotary signal coupler |
| CN106129541A (en) * | 2016-07-19 | 2016-11-16 | 中国电子科技集团公司第三十八研究所 | A kind of U-shaped broadband coaxial rotary joint |
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| Publication number | Publication date |
|---|---|
| CN107039714A (en) | 2017-08-11 |
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