CN205723956U - A kind of high-power feed of multiband dual polarization - Google Patents
A kind of high-power feed of multiband dual polarization Download PDFInfo
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- CN205723956U CN205723956U CN201620619957.9U CN201620619957U CN205723956U CN 205723956 U CN205723956 U CN 205723956U CN 201620619957 U CN201620619957 U CN 201620619957U CN 205723956 U CN205723956 U CN 205723956U
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Abstract
This utility model relates to a kind of high-power feed of multiband multipolarization.Can be as the feed of reflector antenna, again can be as the stand-alone antenna of multiband multipolarization.Be made up of metal main cavity high band waveguide, low-frequency range waveguide and radiating guide, wherein high band waveguide and low-frequency range waveguide constitute feed section, and radiating guide becomes electromagnetic radiation part；High band horizontal polarization feed mouth and high band vertical polarization feed mouth it is respectively equipped with in high band waveguide；Low-frequency range horizontal polarization feed mouth and low-frequency range vertical polarization feed mouth it is respectively equipped with in low-frequency range waveguide.This utility model is the integrated design, it is achieved that two or more wave band antenna Shared aperture identical with beam position (wave beam coupling)；This utility model antenna can be that n frequency range provides multiple polarized signal, i.e. antenna can be operated in multiple frequency range, realizes horizontal polarization and vertical polarization in multiple working frequency range respectively；Or adapted circular polarizer realizes multi-frequency polarized, become high-power circular polarized antenna.
Description
Technical field
This utility model belongs to radar system and the technical field such as microwave communication, satellite communication system, is specifically related to one
Two or more frequency range, dual polarization, high-power feed.
Background technology
In high powered radar system, some radar requires that antenna can have two-band, dual polarization or multiband multipole
Change ability to work, and each band beam points to identical (wave beam coupling).Such as certain C/X band microwave over the horizon environment and propagation experimentation
Platform is actually sea return and the measurement of Ship Target and location, it is desirable to antenna has: many waveforms two-band, dual polarization,
And according to test request by being manually controlled；Multiband aerial Shared aperture identical with beam position (wave beam coupling)；Tool at present
Double (many) frequency ranges, dual polarization, high powered antenna is had mostly to use reflecting surface to add the form of feed group battle array.Such as NASA company of the U.S.
PR-2 Dual-band dual-polarization array feed parabolic cylinder reflector antenna, a kind of Novel double-frequency section dual polarization spaceborne Rainfall estimation radar
Antenna, all be use feed group battle array form realize two-band, dual polarization work.
Utility model content
In order to solve to share a reflecting surface, it is achieved dual polarization or the coaxial work of multipolarization wave beam, this utility model provides one
Plant the high-power feed of multiband dual polarization.
A kind of high-power feed of multiband dual polarization includes the metal main cavity of tubulose, and one end of metal main cavity is high frequency
Section waveguide, middle part is low-frequency range waveguide, and the other end is radiating guide；Described high band waveguide and low-frequency range waveguide constitute current feed department
Point, radiating guide constitutes electromagnetic radiation part；
High band horizontal polarization feed mouth and high band vertical polarization feed mouth it is respectively equipped with in described high band waveguide, high
Frequency range horizontal polarization feed mouth and the high band vertical polarization feed orthogonal thereto layout of mouth；
Low-frequency range horizontal polarization feed mouth and low-frequency range vertical polarization feed mouth it is respectively equipped with in described low-frequency range waveguide, low
Frequency range horizontal polarization feed mouth and the low-frequency range vertical polarization feed orthogonal thereto layout of mouth；
It is provided with dielectric cap at the radiation port of radiating guide；
Described feed section realizes the dual-polarized feed of two or more frequency range, and described electromagnetic radiation part realizes two or more
Frequency range multiple polarization Shared aperture.
The technical scheme limited further is as follows:
Described high band waveguide is circular tube shaped waveguide or square tube type waveguide.
The described low-frequency range waveguide low-frequency transmission waveguide by circular tube shaped and the transforming section waveguide axially connection group of circular cone shape
Become, or the transforming section waveguide of the low-frequency transmission waveguide of square tube type and side's frustum axially connects composition；Transforming section waveguide big straight
Footpath end is connected to one end of low-frequency transmission waveguide, and the smaller diameter end of transforming section waveguide is connected to one end of high frequency waveguide.
Described electromagnetic radiation part is openings waveguide or circular waveguide or multi-step loudspeaker or ridged horn, electromagnetic radiation portion
The smaller diameter end divided is connected to the other end of transmission waveguide, and the larger diameter end of electromagnetic radiation part is connected to dielectric cap.
Described high band horizontal polarization feed mouth is that rectangle feeds mouth, and rectangle feed mouth is faded to circle or side by rectangle
Shape.
Described high band vertical polarization feed mouth is that rectangle feeds mouth.
Described low-frequency range horizontal polarization feed mouth is that rectangle feeds mouth.
Described low-frequency range vertical polarization feed mouth is that rectangle feeds mouth.
Described high band waveguide is provided with more than one coaxial port, for transmitting the signal of different frequency range.
Described low-frequency transmission waveguide is provided with more than one coaxial port, for transmitting the signal of different frequency range.
It is laid with two on the inwall of the radiation port of described radiating guide and adds ladder block with upper ridge or more than two pieces.
Advantageous Effects of the present utility model is embodied in following aspect:
1. this utility model uses multiple frequency range Shared aperture feed, shares a reflecting surface, it is achieved dual polarization or multipole
Change the coaxial work of wave beam；Its great advantage is so that the design of feed is the simplest, feeds more convenient.
2. this utility model simplifies the structure of radar feed, reduces the loss of feeder system, alleviates radar feed system
Weight, reduce feed device, save radar manufacturing cost.
3. this utility model improves integrated level and the reliability of radar system；Can be widely applied to two or more frequency range,
Dual polarization reflecting surface feed or separately as double (many) frequency ranges, dual polarized antenna；Versatility, practicality are stronger.
4. can to cover multiple working frequency range, each frequency band signals mutually orthogonal for this utility model middle width strip antenna.Two orthogonal
Main mould independent signal is supplied to the basic mode of single signal port, makes all feed port coupling and between independent signal
There is high cross polarization resolving ability.
Accompanying drawing explanation
Fig. 1 is this utility model Dual-band dual-polarization structural representation；
Fig. 2 is multiband dual polarization structural representation；
Fig. 3 is low-frequency range lobe pattern；
Fig. 4 is high band lobe pattern；
Fig. 5 is low-frequency range cross polarization diagram；
Fig. 6 is high band cross polarization diagram.
Sequence number in upper figure: high band horizontal polarization feed mouth 1, high band vertical polarization feed mouth 2, low-frequency range horizontal polarization
Feed mouth 3, low-frequency range vertical polarization feed mouth 4, high-frequency transmission waveguide 5, aperture transform section waveguide 6, low-frequency transmission waveguide 7, spoke
Injection device 8, dielectric cap the 9, first coaxial connector 10-1, the second coaxial connector 10-2.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by embodiment, this utility model is further described.
Embodiment 1
Utility model works is at C-band and X-band；Polarization mode is HH, VV polarization；High-gain；Peak power capacity can
Reach tens kilowatts；Wave beam coupling i.e. beam position is identical.High-gain aerial high-power for Dual-band dual-polarization, is not having wave beam
Pointing in the case of requiring, simplest implementation method is to use feed band reflecting surface form.X-band feed and C-band are presented
On source, the bottom is on focal line, and feed input port adds orthomode coupler respectively and connects the feeder system of respective frequency range again and (to reach is
Gain and beam angle that system requires use this scheme two band beam to point to difference 2.2 °), it is unsatisfactory for the requirement of wave beam coupling；
Wave beam to be made mates, and the feed phase center of two frequency ranges all must necessarily be placed in focus, intends using vertical direction group battle array, places C
Wave band feed source, middle placement X-band feed.Allowing two frequency range phase centers overlap with focus, C-band two feed input port respectively connects one
Orthomode coupler, then to C-band feeder line after being synthesized by two-way, X-band directly connects orthomode coupler to feeder line (this side
Case reach beam position identical in the case of, C-band secondary lobe occurs that separating phenomenon, C-band gain and wave beam do not reach
Overall index request)；Should meet wave beam coupling makes beam phase center all be placed in focus to make each frequency range secondary again
Lobe occurs without rip-panel, it is necessary to develop a X/C frequency range dual polarization Shared aperture feed so that the gain of antenna, beam angle, ripple
Shu Zhixiang, secondary lobe, polarization mode all meet the index request that radar system proposes.
A kind of high-power feed of dual polarization two-band is divided into feed part and electromagnetic radiation part, below with C/X frequency range pair
Fig. 1 is described in detail.
Seeing Fig. 1, including the metal main cavity of tubulose, the lower end of metal main cavity is high band waveguide, and middle part is low frequency
Section waveguide, upper end is radiating guide 8；Wherein high band waveguide and low-frequency range waveguide constitute feed section, and radiating guide constitutes electricity
Magnetic radiation part.
High band waveguide is the high-frequency transmission waveguide 5 of tubulose, and high-frequency transmission waveguide 5 is respectively equipped with X frequency range horizontal polarization
Feed mouth 1 and X frequency range vertical polarization feed mouth 2, X frequency range horizontal polarization feed mouth 1 and X frequency range vertical polarization feed mouth 2 is mutual
Vertically form X-band orthogonal signalling, respectively transmission X-band horizontal polarization and vertical polarization signal；X frequency range horizontal polarization feeds
Mouth 1 is rectangular opening, converts through one section of square circular aperture, is positioned at the external port of high-frequency transmission waveguide 5；X frequency range vertical polarization feeds
Mouth 2 is rectangular opening, is positioned on the sidewall of high-frequency transmission waveguide 5；
Low-frequency range waveguide is made up of the aperture transform section waveguide 6 of X frequency range to C frequency range and the low-frequency transmission waveguide 7 of C-band, C
C frequency range horizontal polarization feed mouth 3 and C frequency range vertical polarization feed mouth it is respectively equipped with on the sidewall of the low-frequency transmission waveguide 7 of wave band
4, C frequency range horizontal polarization feed the mouth 3 and C frequency range vertical polarization feed orthogonal thereto layouts of mouth 4；Feed mouth can be standard waveguide also
Can be ridge waveguide, meet frequency range index demand.
Dielectric cap 9 is installed at the radiation port of radiating guide 8.
In view of system each band operation narrow bandwidth, originally executing example and select C-band standard square waveguide, X frequency range is to C frequency range
Aperture transform section waveguide 6 is equivalence short circuit face for two signals of C-band.Its input port shared of X and C is circular waveguide and loudspeaker
The docking of waveguide mouth, loudspeaker in the present embodiment are selected multi-step circular horn, can be operated in X and C frequency range, when as feed
Used time, can be that reflector antenna offer phase center is identical, wave beam mates, the primary lobe directions figure of relatively large illuminating angle degree.By
Gain in reflector antenna is to determine so when two frequency band signals differences are compared with big or time working frequency range is relatively low by face, according to just
The irradiation principle of level lobe, use as far as possible opening loudspeaker, ridged horn maybe can realize wide band multi-step loudspeaker make feed-
The angle that 10dB lobe is irradiated is big, and the lobe secondary lobe that so frequency range is high under the conditions of high-gain does not haves a rip-panel, but such as
Fruit selects the antenna of positive subreflector or the higher W-waveband of frequency range or higher frequency section often to select due to the primary lobe that gain is higher
The corrugated horn of rule more preferably mates, and once has foreign literature to report, not at the row of this utility model discussion.
Feed antenna to be guaranteed can be in optimal irradiating state, and feed 1/10th power width should approximate parabola sky
The subtended angle of line.In real work, sometimes antenna sidelobe level is proposed high requirement, at this moment needs to provide actinal surface cell-edge
More lower irradiation, while requiring low sidelobe, also proposes certain requirement, then should suitably increase actinal surface antenna gain
Diameter；For obtaining equiphase actinal surface field, feed should have the phase center determined；In working band, have between feed and feeder line
Good coupling；Blocking of feed structure opposite surface radiation should be the least；There are enough power capacities；Be resistant to rain, mist with
The corrosion of steam.
Fig. 3-6 sets forth the design result of C/X wave band feed source.Feed X-band-the 10dB using the present embodiment irradiates
Angle is up to ± 41 degree, and C-band-10dB illumination angle is up to ± 58 degree.This feed uses offset-fed form, antenna aperture about 2m, Jiao Jing
Ratio 0.5, parabola focal distance f=1 meter, parabola EQUATION x2+y2=4fz, with circle towards z direction intercepting parabola.Feeder line power up to
Thirty or forty kilowatt, two coaxial work of frequency range of X and C can be realized, two kinds of polarization (horizontally or vertically polarization), the highest antennas increase
Benefit (X-band 43 is at dB, C-band 38dB).Beam shape can need to select suitable reflecting surface (this programme form of a stroke or a combination of strokes ripple according to index
Bundle selects the paraboloid of revolution to realize).
Embodiment 2
The present embodiment, on the basis of embodiment 1, can increase feed mouth or receiving port realize multiple frequency range signal pass
Defeated, press high frequency between multiple frequency ranges to low frequency order rational deployment main feeder.Each frequency range is rationally selected according to its cut-off frequency
Bore and feed waveguide size.In high-frequency transmission waveguide 5, symmetry has additional a pair first coaxial connector 10-as shown in Figure 2
1, the second coaxial connector 10-2, the waveguide cause for gossip with upper and lower two frequency ranges shows three frequency ranges two kinds polarization timesharing or works simultaneously.
Embodiment 1 uses at Dual-band dual-polarization, and in multiband multipolarization, this utility model is the most feasible, as shown in Figure 2
Version just can be operated in three frequency range dual polarizations.Multiband it be also possible to use duplexer and is combined, or does and strain mutually
Change and carry out in rational position mating layout.
This utility model maximum feature is to realize double (many) frequency ranges, the coaxial work of dual polarization.Radar feed can be simplified
Structure, reduces the loss of feeder system, alleviates the weight of radar feed system, reduces feed device, saves radar manufacturing cost；
Realize the optimization design of radar feed system；Improve integrated level and the reliability of radar system.This utility model can extensively be applied
In double (many) frequency ranges, dual polarization reflecting surface feed or use separately as high-gain, double (many) frequency ranges, dual polarized antenna.Versatility,
Practicality is stronger.Broadband horn and multi-band signal Integrated design, have double (many) frequency ranges, dual polarization ability to work, have greatly
Power capability, the coaxial work of multiband can be realized.Also double (many) frequency ranges, dual polarization sky can be individually done as the feed of reflecting surface
Line is used.
Claims (6)
1. the high-power feed of multiband dual polarization, it is characterised in that: include the metal main cavity of tubulose, metal main cavity
One end is high band waveguide, and middle part is low-frequency range waveguide, and the other end is radiating guide；Described high band waveguide and low-frequency range waveguide
Constituting feed section, radiating guide constitutes electromagnetic radiation part；
High band horizontal polarization feed mouth and high band vertical polarization feed mouth, high band it is respectively equipped with in described high band waveguide
Horizontal polarization feed mouth and the high band vertical polarization feed orthogonal thereto layout of mouth；
Low-frequency range horizontal polarization feed mouth and low-frequency range vertical polarization feed mouth, low-frequency range it is respectively equipped with in described low-frequency range waveguide
Horizontal polarization feed mouth and the low-frequency range vertical polarization feed orthogonal thereto layout of mouth；
It is provided with dielectric cap at the radiation port of radiating guide；
Described feed section realizes the dual-polarized feed of two or more frequency range, and described electromagnetic radiation part realizes two or more frequency range
Multiple polarization Shared aperture.
A kind of high-power feed of multiband dual polarization the most according to claim 1, it is characterised in that:
Described high band waveguide is circular tube shaped waveguide or square tube type waveguide；
Described low-frequency range waveguide is axially connected by the low-frequency transmission waveguide of circular tube shaped and the transforming section waveguide of circular cone shape and forms, or
The transforming section waveguide of the low-frequency transmission waveguide of square tube type and side's frustum axially connects composition, and the larger diameter end of transforming section waveguide is even
Then one end of low-frequency transmission waveguide, the smaller diameter end of transforming section waveguide is connected to one end of high band waveguide；
Described electromagnetic radiation part is openings tube waveguide or pipe waveguide or square horn shape waveguide or ridged horn shape waveguide, electricity
The smaller diameter end of magnetic radiation part is connected to the other end of low-frequency transmission waveguide, and the larger diameter end of electromagnetic radiation part is connected to be situated between
Matter cover.
A kind of high-power feed of multiband dual polarization the most according to claim 1, it is characterised in that:
Described high band horizontal polarization feed mouth is that rectangle feeds mouth, and rectangle feed mouth is faded to circular or square by rectangle；
Described high band vertical polarization feed mouth is that rectangle feeds mouth；
Described low-frequency range horizontal polarization feed mouth is that rectangle feeds mouth；
Described low-frequency range vertical polarization feed mouth is that rectangle feeds mouth.
A kind of high-power feed of multiband dual polarization the most according to claim 1, it is characterised in that: described high band waveguide
It is provided with more than one coaxial port, for transmitting the signal of different frequency range.
A kind of high-power feed of multiband dual polarization the most according to claim 1, it is characterised in that: described low-frequency transmission ripple
Lead and be provided with more than one coaxial port, for transmitting the signal of different frequency range.
A kind of high-power feed of multiband dual polarization the most according to claim 1, it is characterised in that: described radiating guide
It is laid with two on the inwall of radiation port and adds ladder block with upper ridge or more than two pieces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620619957.9U CN205723956U (en) | 2016-06-20 | 2016-06-20 | A kind of high-power feed of multiband dual polarization |
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| CN201620619957.9U CN205723956U (en) | 2016-06-20 | 2016-06-20 | A kind of high-power feed of multiband dual polarization |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958205A (en) * | 2016-06-20 | 2016-09-21 | 中国电子科技集团公司第三十八研究所 | Multiband dual-polarized high-power feed source |
| CN108701900A (en) * | 2017-01-22 | 2018-10-23 | 华为技术有限公司 | A dual frequency antenna |
| CN109755767A (en) * | 2018-10-19 | 2019-05-14 | 上海航天测控通信研究所 | Eight frequency range Dual-polarized single pulse dual reflector antennas |
| CN110429365A (en) * | 2019-07-19 | 2019-11-08 | 北京无线电计量测试研究所 | A kind of nonmetallic waveguide and manufacturing method |
-
2016
- 2016-06-20 CN CN201620619957.9U patent/CN205723956U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958205A (en) * | 2016-06-20 | 2016-09-21 | 中国电子科技集团公司第三十八研究所 | Multiband dual-polarized high-power feed source |
| CN108701900A (en) * | 2017-01-22 | 2018-10-23 | 华为技术有限公司 | A dual frequency antenna |
| CN109755767A (en) * | 2018-10-19 | 2019-05-14 | 上海航天测控通信研究所 | Eight frequency range Dual-polarized single pulse dual reflector antennas |
| CN110429365A (en) * | 2019-07-19 | 2019-11-08 | 北京无线电计量测试研究所 | A kind of nonmetallic waveguide and manufacturing method |
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