CN208820033U - A kind of waveguide junction for low section beam scanning antennas - Google Patents
A kind of waveguide junction for low section beam scanning antennas Download PDFInfo
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- CN208820033U CN208820033U CN201821759850.XU CN201821759850U CN208820033U CN 208820033 U CN208820033 U CN 208820033U CN 201821759850 U CN201821759850 U CN 201821759850U CN 208820033 U CN208820033 U CN 208820033U
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Abstract
The utility model relates to microwave component technical fields, and in particular to a kind of waveguide junction for low section beam scanning antennas, including upper rotating mechanism, non-rotating mechanism and bearing, the upper rotating mechanism and non-rotating mechanism carry out relative rotation by bearing；The upper rotating mechanism includes upper waveguide, coaxial waveguide, interior pressing ring and upper built-up shaft, the upper waveguide is fixedly connected with upper built-up shaft, the lower section of upper built-up shaft and bearing inner ring is arranged in the interior pressing ring, and be fixedly connected with upper built-up shaft, the coaxial waveguide close-fitting is between upper waveguide, interior pressing ring and upper built-up shaft；The non-rotating mechanism includes lower waveguide, outer pressing ring, shell and low bottom-disc, the shell is fixedly connected with the lower waveguide being located at below shell, the lower waveguide is fixedly connected with the low bottom-disc being located at below lower waveguide, the lower section of shell and outer race is arranged in the outer pressing ring, and is fixedly connected with shell.The waveguide junction small, superior performance of longitudinal height and have a wide range of application.
Description
Technical field
The utility model relates to microwave component technical fields, and in particular to a kind of wave for low section beam scanning antennas
Lead rotary joint.
Background technique
Mobile satellite communication (SATCOM) is more and more widely used in a communications system existing, low section, Gao Zeng
Beneficial beam scanning antennas plays key player in mobile satellite communication, and these antenna system can be good at being suitable for vehicle
It carries, carrier-borne and airborne etc. fields.Variable incidence continuous cross-section section array (VICTS) antenna is exactly wherein most representative novel
One of antenna, it is a kind of electromechanical integration antenna based on completely new electromagnetic theory and design method, passes through CTS layers and functional layer
Two-dimensional surface rotation, realize the adjustment at beam positional angle, pitch angle and polarizing angle, to realize beam scanning, it has low
The advantages that section and high-gain.It therefore, is the characteristic for meeting antenna system low section, the waveguide rotation that structure is simple, small in size
The important component that joint becomes as the antenna system is of great significance to the tracking performance for guaranteeing antenna.
Currently, existing waveguide junction design scheme and its structure type exist, longitudinal height is big, application conditions are severe
The defects of quarter, is unable to satisfy the demand applied to novel low section beam scanning antennas system.
Summary of the invention
The purpose of the utility model is to overcome defects in the prior art, provide a kind of for low section beam scanning day
The waveguide junction of line, the waveguide junction small, superior performance of longitudinal height and has a wide range of application, and is suitable for Ku wave band
Antenna system, especially have the characteristics that the antenna that complete machine section is low, small in size, such as relatively advanced at present VICTS days
Linear system system.The longitudinal height of the waveguide junction is less than 3.5cm, is fully applicable to such low section on the premise of ensuring performance
Antenna for satellite communication in motion system.
In order to achieve the above object, the technical solution adopted in the utility model is:
A kind of waveguide junction for low section beam scanning antennas of the utility model, including upper rotating mechanism,
Non-rotating mechanism and bearing, the upper rotating mechanism and non-rotating mechanism carry out relative rotation by bearing；The upper whirler
Structure includes upper waveguide, coaxial waveguide, interior pressing ring and upper built-up shaft, and the upper waveguide is fixedly connected with upper built-up shaft, the internal pressure
The lower section of upper built-up shaft and bearing inner ring is arranged in circle, and is fixedly connected with upper built-up shaft, and the coaxial waveguide close-fitting is in upper ripple
It leads, between interior pressing ring and upper built-up shaft；The non-rotating mechanism includes lower waveguide, outer pressing ring, shell and low bottom-disc, the shell
It is fixedly connected with the lower waveguide being located at below shell, the lower waveguide is fixedly connected with the low bottom-disc being located at below lower waveguide, institute
The lower section that shell and outer race is arranged in outer pressing ring is stated, and is fixedly connected with shell.
Further, the coaxial waveguide includes coaxial probe, dielectric ring and copper ring, and the coaxial probe is fixedly attached to
The inside of dielectric ring, the dielectric ring are fixedly attached to the inside of copper ring.
Further, the material of the dielectric ring uses polytetrafluoroethylene material, dielectric constant 2.2.
Further, the copper ring includes upper copper ring and lower copper ring, and the upper copper ring and lower copper ring are threadably secured company
It connects.
Further, there are gaps between the lower waveguide and lower copper ring, interior pressing ring.
Further, choke groove is offered at the top of the lower waveguide.
Further, described be fixedly connected is connected using screw.
Compared with prior art, the positive beneficial effect of the utility model is:
1, a kind of waveguide junction for low section beam scanning antennas of the utility model, applicable band is wider,
Functional and stable working performance, as shown in Fig. 2, curve 1 indicates that frequency-insertion loss simulation result, curve 2 indicate frequency
Rate-standing-wave ratio simulation result, 16% relative bandwidth standing internal wave ratio less than 1.2, the insertion loss in 18.5% relative bandwidth
Less than 0.2dB.
2, the waveguide junction whole height of the utility model is lower, about 3.5cm, can be adapted for a variety of Ku frequency ranges
It needs to track, the ultralow section antenna for satellite communication in motion system of alignment, such as VICTS antenna system.
3, the traveling wave part (upper rectangular waveguide, lower rectangular waveguide and coaxial waveguide) of the waveguide junction of the utility model
Simple and reasonable, waveguide-coax transition is using the form for separating coaxial probe with rectangular wave guide wall, by coaxial probe
It is directly protruding into upper and lower rectangular wave guide cavity, by changing the size of coaxial probe and the position realization on-axis wave of waveguide short wall
The impedance matching with rectangular waveguide is led, not only ensure that the stability in rotary course, but also eliminates the choke groove on coaxial probe
Design, it is ensured that stable working performance and working band.
4, the utility model is designed reasonably, each section use modularized design, are assembled integrally by screw or close-fitting,
Fixation ensure that the stabilization of structure in the case where not influencing and normally rotating.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural representation of waveguide junction for low section beam scanning antennas of the utility model
Figure；
Fig. 2 is a kind of standing-wave ratio of waveguide junction for low section beam scanning antennas of the utility model and inserts
Enter the simulation result diagram of loss.
Meaning representated by serial number in figure are as follows: waveguide on 1., 2. lower waveguides, pressing ring in 3., 4. outer pressing rings, 5. dielectric rings,
6. copper ring, copper ring on 601., 602. lower copper rings, 7. coaxial probes, built-up shaft on 8., 9. bearings, 10. shells, 11. low bottom-discs,
12. choke groove.
Specific embodiment
Embodiment one, as shown in Figure 1, a kind of waveguide for low section beam scanning antennas provided in this embodiment rotates
Joint, including upper rotating mechanism, non-rotating mechanism and bearing 9, the bearing 9 are industrial standard bearing, the upper rotating mechanism
Relative rotation is carried out by bearing 9 with non-rotating mechanism.
The upper rotating mechanism includes upper waveguide 1, coaxial waveguide, interior pressing ring 4 and upper built-up shaft 8, the upper waveguide 1 with it is upper
Built-up shaft 8 is fixedly connected by screw, and the interior pressing ring 4 is arranged in the lower section of upper built-up shaft 8 and bearing inner ring, and with upper combination
Axis 8 is fixedly connected by screw, wherein the interior pressing ring 4 is used to bearing inner ring being pressed on upper built-up shaft 8；It is described coaxial
Waveguide close-fitting is between upper waveguide 1, interior pressing ring 3 and upper built-up shaft 8.
Further, the coaxial waveguide includes coaxial probe 7, dielectric ring 5 and copper ring 6,7 fixing sleeve of coaxial probe
It connects in the inside of dielectric ring 5, the dielectric ring 5 is fixedly attached to the inside of copper ring 6.The copper ring 6 includes upper copper ring 601 under
Copper ring 602, the upper copper ring 601 is threadably secured with lower copper ring 602 to be connect.Preferably, the material of the dielectric ring 5
Using polytetrafluoroethylene material, dielectric constant 2.2.
The non-rotating mechanism includes lower waveguide 2, outer pressing ring 4, shell 10 and low bottom-disc 11, the shell 10 be located at it is outer
The lower waveguide 2 of 10 lower section of shell is fixedly connected by screw, and the lower waveguide 2 passes through with the low bottom-disc 11 for being located at lower 2 lower section of waveguide
Screw is fixedly connected, and the lower section of shell 10 and outer race is arranged in the outer pressing ring 4, and connects with shell 10 by the way that screw is fixed
It connects, wherein the outer pressing ring 4 is used to outer race being pressed on shell 10.
There are the gaps 0.1mm between the lower waveguide 2 and lower copper ring 602, interior pressing ring 3, when relative rotation occurring to reduce
Frictional force.
The top of the lower waveguide 2 offers choke groove 12, avoids the leaky wave phenomenon generated by gap.
Preferably, the upper waveguide 1 and lower waveguide 2 are rectangular waveguide, are all made of flat (standard) waveguide design of BJ120, by
Rectangular waveguide and coaxial waveguide realize the transmission of electromagnetic wave jointly.The upper waveguide 1 and the coaxial conversion portion of lower waveguide 2 are by changing
Realize the impedance matching of coaxial waveguide and rectangular waveguide in the position of the size and waveguide short wall that become coaxial probe 7.
The course of work is as follows:
Upper waveguide 1 is close-fitting assembly with coaxial waveguide, and lower waveguide 2 is the assembly of non-close-fitting with coaxial waveguide, mechanical in generation
When rotation, upper waveguide 1 is rotated jointly with coaxial waveguide, and lower waveguide 2 does not rotate, to carry out steady operation.
The above-mentioned description to embodiment is for that can understand and apply this practical convenient for those skilled in the art
It is novel.Person skilled in the art obviously easily can make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiments without having to go through creative labor.Therefore, those skilled in the art are according to this
The announcement of utility model, does not depart from improvement that the utility model scope is made and modification all should be in the protection of the utility model
Within the scope of.
Claims (7)
1. a kind of waveguide junction for low section beam scanning antennas, which is characterized in that including upper rotating mechanism, non-rotation
Rotation mechanism and bearing, the upper rotating mechanism and non-rotating mechanism carry out relative rotation by bearing；The upper rotating mechanism packet
Waveguide, coaxial waveguide, interior pressing ring and upper built-up shaft are included, the upper waveguide is fixedly connected with upper built-up shaft, and the interior pressing ring is set
The lower section in upper built-up shaft and bearing inner ring is set, and is fixedly connected with upper built-up shaft, the coaxial waveguide close-fitting is in upper waveguide, interior
Between pressing ring and upper built-up shaft；The non-rotating mechanism includes lower waveguide, outer pressing ring, shell and low bottom-disc, the shell and position
Lower waveguide below shell is fixedly connected, and the lower waveguide is fixedly connected with the low bottom-disc being located at below lower waveguide, described outer
The lower section of shell and outer race is arranged in pressing ring, and is fixedly connected with shell.
2. the waveguide junction according to claim 1 for low section beam scanning antennas, which is characterized in that described
Coaxial waveguide includes coaxial probe, dielectric ring and copper ring, and the coaxial probe is fixedly attached to the inside of dielectric ring, the medium
Ring is fixedly attached to the inside of copper ring.
3. the waveguide junction according to claim 2 for low section beam scanning antennas, which is characterized in that described
The material of dielectric ring uses polytetrafluoroethylene material, dielectric constant 2.2.
4. the waveguide junction according to claim 2 for low section beam scanning antennas, which is characterized in that described
Copper ring includes upper copper ring and lower copper ring, and the upper copper ring is threadably secured with lower copper ring and connect.
5. the waveguide junction according to claim 4 for low section beam scanning antennas, which is characterized in that described
There are gaps between lower waveguide and lower copper ring, interior pressing ring.
6. the waveguide junction according to claim 1 for low section beam scanning antennas, which is characterized in that described
Choke groove is offered at the top of lower waveguide.
7. the waveguide junction according to claim 1 for low section beam scanning antennas, which is characterized in that described
It is fixedly connected and is connected using screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821759850.XU CN208820033U (en) | 2018-10-29 | 2018-10-29 | A kind of waveguide junction for low section beam scanning antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821759850.XU CN208820033U (en) | 2018-10-29 | 2018-10-29 | A kind of waveguide junction for low section beam scanning antennas |
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| CN208820033U true CN208820033U (en) | 2019-05-03 |
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| CN201821759850.XU Active CN208820033U (en) | 2018-10-29 | 2018-10-29 | A kind of waveguide junction for low section beam scanning antennas |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311191A (en) * | 2019-08-09 | 2019-10-08 | 成都国恒空间技术工程有限公司 | A kind of low-loss, wide band high reliability rotary joint |
| CN111934061A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | Ultra-wideband waveguide rotary joint, control system, method and application |
| CN111934064A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | L-shaped ultra-wideband waveguide rotary joint, control system, control method and application |
| CN111934063A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | Non-contact ultra-wideband waveguide rotary joint, control system, method and application |
| CN111934062A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | U-shaped ultra-wideband non-contact waveguide rotary joint, control system, method and application |
| CN111954452A (en) * | 2020-06-29 | 2020-11-17 | 西安电子科技大学 | Wear-resistant rotatable broadband electromagnetic shielding structure, design method and application |
| CN113809489A (en) * | 2021-08-13 | 2021-12-17 | 电子科技大学长三角研究院(湖州) | Terahertz full-duplex waveguide rotary joint based on diaphragm polarizer |
-
2018
- 2018-10-29 CN CN201821759850.XU patent/CN208820033U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311191A (en) * | 2019-08-09 | 2019-10-08 | 成都国恒空间技术工程有限公司 | A kind of low-loss, wide band high reliability rotary joint |
| CN111934061A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | Ultra-wideband waveguide rotary joint, control system, method and application |
| CN111934064A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | L-shaped ultra-wideband waveguide rotary joint, control system, control method and application |
| CN111934063A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | Non-contact ultra-wideband waveguide rotary joint, control system, method and application |
| CN111934062A (en) * | 2020-06-29 | 2020-11-13 | 西安电子科技大学 | U-shaped ultra-wideband non-contact waveguide rotary joint, control system, method and application |
| CN111954452A (en) * | 2020-06-29 | 2020-11-17 | 西安电子科技大学 | Wear-resistant rotatable broadband electromagnetic shielding structure, design method and application |
| CN113809489A (en) * | 2021-08-13 | 2021-12-17 | 电子科技大学长三角研究院(湖州) | Terahertz full-duplex waveguide rotary joint based on diaphragm polarizer |
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