CN209860121U - Air plate line inner conductor medium supporting and phase modulation device - Google Patents
Air plate line inner conductor medium supporting and phase modulation device Download PDFInfo
- Publication number
- CN209860121U CN209860121U CN201921147483.2U CN201921147483U CN209860121U CN 209860121 U CN209860121 U CN 209860121U CN 201921147483 U CN201921147483 U CN 201921147483U CN 209860121 U CN209860121 U CN 209860121U
- Authority
- CN
- China
- Prior art keywords
- inner conductor
- support
- plate line
- air plate
- medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses an air plate line inner conductor medium supports and phase modulation device, including inner conductor, outer conductor metal cavity, a pair of medium support, each medium supports including lower medium support and last medium support, and the medium supports the fixed of accomplishing the inner conductor. The position of the medium support is positioned through the mounting hole on the inner conductor, and the inner conductor is accurately positioned in the metal cavity of the outer conductor through the positioning hole of the metal cavity of the outer conductor; meanwhile, the device can obtain good matching characteristics, can realize a certain phase adjusting function, and can effectively improve performance indexes such as standing waves, amplitude-phase characteristics and the like of the air plate line feed network system.
Description
Technical Field
The utility model relates to an air plate line inner conductor medium supports and phase modulation device belongs to radar antenna and presents technique, high power microwave technical field.
Background
The air plate line is also called as an air three-plate line, is a common microwave integrated transmission line, has the advantages of low loss, high power capacity, uniform air medium distribution, good transmission consistency and the like compared with other conventional microwave integrated transmission lines, and is widely applied to systems such as an array antenna feed network, a low-loss high-power microwave synthesis network and the like.
The existing common inner conductor medium supporting structure of the air plate line medium supporting device firstly positions an inner conductor in an inner cavity of an outer conductor by the shape of the inner conductor by using a positioning block so as to position an inner conductor support, and then the inner conductor support is cemented in the inner cavity of the outer conductor so as to keep the position of the inner conductor, and the essence is that the inner conductor is firstly positioned and then the inner conductor support is positioned, because the shape of the inner conductor is extremely complex, the positioning points are many, a large number of positioning blocks are needed, and because a cementing fixing form is adopted, the complexity of assembly is increased, the inner conductor is polluted, and the network loss is increased; and due to the existence of the medium supporting structure, the continuity of the air plate line is damaged, so that the standing wave performance of the system is reduced, particularly in a large-scale microwave network, the medium supporting structures are numerous, a plurality of discontinuous point standing waves are superposed, so that the standing wave characteristic is remarkably deteriorated, and the amplitude-phase characteristic of the network is also rapidly deteriorated.
Patent invention patent of "air plate line inner conductor supporting mechanism of radar antenna" of friend silver of Zhongfeng 38, patent number CN200620127047 proposes a novel inner conductor supporting mechanism of air plate line, the structure thereof solves the cementation problem of medium support, improves the assembly efficiency, but the structure form is more complex, and the standing wave characteristic of the conventional design is not good, the inner conductor needs to be compensated and optimized, and the complexity and the processing difficulty of the inner conductor are further increased.
The phase modulation device of air plate line, the phase deployment is generally to deploy the phase through the exterior microstrip antenna unit or connecting the radio frequency cable system at present, the system deployment is very troublesome. The need for new phase matching means is urgent.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a medium supporting and phase modulation device applied to an air plate line inner conductor in a radar antenna feeder system, through the supporting mechanism, the inner conductor can be accurately fixed in a metal cavity of an outer conductor, the device has simple structural form and simple installation mode, and the assembly efficiency and the assembly precision are greatly improved; meanwhile, the device can obtain good matching characteristics, can realize a certain phase adjusting function, and can effectively improve performance indexes such as standing waves, amplitude-phase characteristics and the like of the air plate line feed network system.
In order to solve the above problem, the utility model adopts the following technical scheme: the dielectric support and phase modulation device comprises an inner conductor, an outer conductor metal cavity and a pair of dielectric supports, wherein the inner conductor and the pair of dielectric supports are located in the outer conductor metal cavity, each dielectric support comprises a lower dielectric support and an upper dielectric support, and the dielectric supports complete the fixation of the inner conductor. A medium support mounting hole is formed in the inner conductor, one end of the lower medium support penetrates through the medium support mounting hole to be connected with the upper medium support, and the positioning of the medium support on the inner conductor is realized through the design of the mounting hole; a positioning hole is arranged in the metal cavity of the outer conductor, and the other end of the lower medium support is inserted into the positioning hole; the inner conductor is accurately positioned and installed in the metal cavity of the outer conductor.
Microwave signals are transmitted along the air plate line, and when the signals are transmitted to the medium supporting position, reflection is inevitably caused due to discontinuous points introduced into the uniform transmission line. By adjusting the distance between the two medium supports (namely adopting 1/4 wavelengths), the reflection phases caused by the two medium support structures are reversed, so that the reflection signals are mutually offset, good matching characteristics are realized, and the microwave signals can be smoothly transmitted.
The middle of the lower medium support is a cylinder, the upper part of the lower medium support is a connecting column, the lower part of the lower medium support is a positioning column, the upper medium support is also a cylinder, and the diameter of the cylinder of the lower medium support is equal to that of the cylinder of the upper medium support. By changing the diameter of the cylinder supported by the medium, the phase adjustment between the air plate lines can be realized by the difference between the dielectric constant of the medium piece and the dielectric constant of the air.
The lower medium support and the upper medium support are made of polytetrafluoroethylene materials, polyethylene materials or polyphenyl ether materials.
Compared with the prior art, the utility model, following beneficial effect has:
1) the assembly precision of the inner conductor is improved;
2) the problem of supporting and matching of conductor media in the air plate line is solved, and the standing wave characteristic of the air plate line is optimized;
3) the cementing form of the medium support is solved, and the system loss is reduced;
4) the problem of phase adjustment of the air plate line is solved;
5) the assembly and the processing efficiency of the air plate line are improved.
The characteristics can effectively improve the production and assembly efficiency of the air plate line, greatly improve the microwave performance of the air plate line transmission system, are particularly suitable for the design of a large low-loss ultralow minor lobe antenna feed network, solve the matching problem of a large network supporting structure, solve the problem of large network phase adjustment, easily realize good amplitude-phase characteristics, and have very special technical benefits.
The utility model discloses the device not only is applicable to the symmetrical air plate line of standard, also is applicable to asymmetric air plate line structure equally.
The utility model discloses not only be applicable to S wave band air plate line system, also be applicable to the air plate line system of other frequency channels equally.
Drawings
FIG. 1 is a schematic three-dimensional structure of an air plate line inner conductor supporting and phase modulating device;
FIG. 2 is a schematic plan view of an air plate line inner conductor supporting and phase modulating apparatus;
FIG. 3 is a schematic diagram of the metal cavity and mounting hole structure of the outer conductor;
FIG. 4 is a schematic view of the inner conductor and the mounting hole;
FIG. 5-1 is a schematic view of a lower media support structure;
FIG. 5-2 is a schematic view of an upper media support structure;
FIG. 6 is a standing wave characteristic curve of the conductor medium supporting and phase modulating device in the air plate line;
fig. 7 is a phase characteristic curve of the conductor medium supporting and phase modulating device in the air plate line.
Wherein 1 is an inner conductor, 2 is an outer conductor metal cavity, 3 is a lower medium support, 4 is an upper medium support, 5 is a mounting hole, 6 is a positioning hole, 7 is a connecting column, 8 is a positioning column, and 9 is a cylinder.
Detailed Description
The present invention will be further explained below.
As shown in fig. 1 to 5-2, the utility model provides an air plate wire inner conductor medium supporting and phase modulation device, which comprises an inner conductor 1, an outer conductor metal cavity 2 and a pair of medium supports, wherein the inner conductor 1 and the pair of medium supports are positioned in the outer conductor metal cavity 2, and each medium support comprises a lower medium support 3 and an upper medium support 4; a medium support mounting hole 5 is formed in the inner conductor 1, and one end of the lower medium support 3 penetrates through the medium support mounting hole 5 and is connected with the upper medium support 4; a positioning hole 6 is arranged in the outer conductor metal cavity 2, and the other end of the lower medium support 3 is inserted into the positioning hole 6.
The distance between the two media supports is 1/4 wavelengths.
The middle of the lower medium support 3 is a cylinder 9, the upper part is a connecting column 7, the lower part is a positioning column 8, the upper medium support 4 is also a cylinder, and the cylinder 9 of the lower medium support 3 and the cylinder of the upper medium support 4 have the same diameter and the same height.
The lower medium support 3 and the upper medium support 4 are made of polytetrafluoroethylene materials, or polyethylene materials, or polyphenyl ether materials
The lower dielectric support 3 is firstly installed in the installation hole of the inner conductor 1, then the lower dielectric support and the inner conductor are installed in the outer conductor metal cavity 2 together, the installation precision of the inner conductor is guaranteed by the positioning hole in the outer conductor metal cavity 2, and then the upper dielectric support 4 is installed, so that the assembly of the air plate line inner conductor and the dielectric support thereof can be completed.
According to the design concept, a set of S-band low-loss ultralow side lobe air plate line feed network is designed, and the specific implementation steps are as follows: the height B of the air plate wire cavity is 8 mm; the thickness T of the inner conductor is 1.5 mm; the inner conductor medium supporting distance is 22 mm; media support diameter is from 4 mm; the diameter of the medium support can be selected from 4 mm-8 mm when phase adjustment is needed. Fig. 6 is a standing wave characteristic curve of the conductor medium supporting and phase modulating device in the air plate line, and fig. 7 is a phase characteristic curve of the conductor medium supporting and phase modulating device in the air plate line. It can be seen that the dielectric support device for the conductor in the air plate line has good standing wave characteristics in a bandwidth of more than 30%, and the proper amount of phase adjustment can be realized by changing the diameter of the dielectric support. Better meets the engineering requirements.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (4)
1. A dielectric support and phase modulation device for an inner conductor of an air plate line is characterized by comprising an inner conductor, an outer conductor metal cavity and a pair of dielectric supports, wherein each dielectric support comprises a lower dielectric support and an upper dielectric support;
a medium support mounting hole is formed in the inner conductor, and one end of the lower medium support penetrates through the medium support mounting hole to be connected with the upper medium support;
a positioning hole is arranged in the metal cavity of the outer conductor, and the other end of the lower medium support is inserted into the positioning hole;
the inner conductor and the pair of dielectric supports are located within the outer conductor metal cavity.
2. The dielectric support and phase modulation apparatus for an air plate line conductor of claim 1 wherein the distance between said dielectric supports is 1/4 wavelengths.
3. The dielectric support and phase modulation device for the inner conductor of an air plate line according to claim 1, wherein the lower dielectric support has a cylindrical middle part, a connection column on the upper part and a positioning column on the lower part, the upper dielectric support is also a cylinder, and the cylinder of the lower dielectric support and the cylinder of the upper dielectric support have the same diameter and the same height.
4. The dielectric support and phase modulation apparatus for an air plate line conductor of claim 1, wherein said lower dielectric support and said upper dielectric support are made of teflon, polyethylene, or polyphenylene oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147483.2U CN209860121U (en) | 2019-07-22 | 2019-07-22 | Air plate line inner conductor medium supporting and phase modulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147483.2U CN209860121U (en) | 2019-07-22 | 2019-07-22 | Air plate line inner conductor medium supporting and phase modulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209860121U true CN209860121U (en) | 2019-12-27 |
Family
ID=68943195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921147483.2U Active CN209860121U (en) | 2019-07-22 | 2019-07-22 | Air plate line inner conductor medium supporting and phase modulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209860121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851822A (en) * | 2021-08-24 | 2021-12-28 | 电子科技大学 | High-power frequency division space selective antenna |
-
2019
- 2019-07-22 CN CN201921147483.2U patent/CN209860121U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851822A (en) * | 2021-08-24 | 2021-12-28 | 电子科技大学 | High-power frequency division space selective antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107732400B (en) | Millimeter wave broadband ridge probe radial waveguide power distribution/synthesizer | |
| EP2195884B1 (en) | Antenna arrangement | |
| CN203300786U (en) | Broadband missile-borne measuring-controlling antenna | |
| CN108598702A (en) | A kind of ultra wide band low profile antenna array structure | |
| CN103268987B (en) | A kind of small size three is unification multifrequency ceramic antenna frequently | |
| CN105990676B (en) | Wide axial ratio bandwidth dual-band dual-circular polarization micro-strip array antenna | |
| CN209860121U (en) | Air plate line inner conductor medium supporting and phase modulation device | |
| CN107046177A (en) | The Bipolarized paraboloid antenna feed of feedback type | |
| CN105244633A (en) | Broadband different-frequency orthogonal dipole antenna | |
| CN206301950U (en) | The Bipolarized paraboloid antenna feed of feedback type | |
| CN106711601B (en) | Broadband millimeter wave waveguide slot antenna adopting double parabolic cylinder feed | |
| CN108134172B (en) | Power synthesis distribution device | |
| CN108346845B (en) | Ultra-wideband high-power miniaturized power divider | |
| CN111224229B (en) | Satellite array antenna based on mirror image subarray | |
| CN106356599A (en) | Quasi-plane wave discretion or acquisition method and device | |
| CN116417786A (en) | Indoor distributed dual-polarized directional wall-mounted antenna with mobile broadband | |
| CN105811109A (en) | High-gain electrically-adjustable antenna with large downward inclination angle | |
| CN202651330U (en) | Air stripline power divider | |
| CN110504547B (en) | Series-fed waveguide slot frequency scanning antenna with large scanning angle in limited bandwidth | |
| CN112713413B (en) | Spiral array antenna | |
| CN210607603U (en) | VHF circular polarization transmitting antenna | |
| CN113488769A (en) | Parallel plate waveguide power divider and CTS antenna | |
| CN105140633A (en) | Microstrip antenna with separate receiving and transmitting antennas | |
| CN113517571B (en) | CTS antenna based on multilayer rectangular waveguide power dividing structure | |
| CN206211023U (en) | A kind of broadband millimeter-wave Waveguide slot antenna of use double-paraboloid cylinder feed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |