CN102610927B - A kind of dual-band dual-circular polarization feed for paraboloidal-reflector antenna - Google Patents
A kind of dual-band dual-circular polarization feed for paraboloidal-reflector antenna Download PDFInfo
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- CN102610927B CN102610927B CN201210089498.4A CN201210089498A CN102610927B CN 102610927 B CN102610927 B CN 102610927B CN 201210089498 A CN201210089498 A CN 201210089498A CN 102610927 B CN102610927 B CN 102610927B
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Abstract
The invention discloses a kind of simple type, double frequency, double-circle polarization feed for paraboloidal-reflector antenna, comprising: the circular radiation patch of eight L-type probe feeds. It is characterized in that: eight L-type probes are arranged around circumference equal angles, the feed probes of frequency 1 and 2 is interspersed, wherein four distances from radiation disc centre change with frequency, be that frequency is when high, the center line of probe vertical component is near the center of radiation disk, and the area of radiation areas is corresponding to diminish. The low center line of frequency is away from the center of radiation disk, and the area phase strain of radiation areas is large. Thereby ensure to have approximate consistent directional diagram in two frequency ranges; Two frequency ranges have approximate consistent phase center and all have wider working band in two frequency bands. The double-circle polarization work in two frequency ranges simultaneously of this feed, and section is low, simple in structure, with low cost, can make paraboloidal-reflector antenna have high antenna efficiency, low sidelobe level in two frequency ranges, also can make two frequency ranges there is the advantages such as good frequency range isolation and polarization isolation simultaneously.
Description
Technical field
The present invention relates to a kind of feed. Be specifically a kind of simple type, the reflection of double frequency, double-circle polarization parabolicSurface antenna feed.
Background technology
Feed is the heart of reflector antenna, and the quality of feed directly determines the performance of paraboloidal-reflector antenna.For double frequency paraboloidal-reflector antenna, need undoubtedly the feed of two frequency ranges all to have in identical phase placeThe heart, having approximate consistent directional diagram just can be in two frequency range, and paraboloidal-reflector antenna could obtain goodGood performance. As features such as high efficiency, high-gain, low secondary lobes. Although some double-frequency micro-strip antenna or broadbandAntenna has double frequency or broadband (can cover double frequency) feature, can treat as parabolic reflector sky through improvingThe feed of line, but the feed of a lot of double-frequency micro-strip antenna or broad-band antenna composition does not have unified phase center,Can be around axially or along Axial changes with change of frequency phase center. Directional diagram is with change of frequency comparison simultaneouslyObviously, be difficult in two frequency bands, obtain approximate consistent directional diagram simultaneously, thereby cause antenna efficiency low.Some two-band feeds that adopt two feed nesting methods to realize are general in the situation that frequency ratio is smallerBe difficult to obtain approximate consistent directional diagram. These adopt the two-band feed of nesting method realization to two frequency rangesFrequency ratio have certain requirement. Work out a kind of in two-band, have approximate consistent directional diagram, toolThe feed for paraboloidal-reflector antenna that has unified phase center is one that in paraboloidal-reflector antenna field, facesTechnical barrier.
Summary of the invention
Problem to be solved by this invention, is to overcome the defect that prior art exists, and has proposed a kind of simple and easyType dual-band dual-circular polarization feed for paraboloidal-reflector antenna, this feed can be worked simultaneously in two frequency ranges, canLow, simple in structure, with low cost with double-circle polarization work and section, in two frequency ranges, have approximate oneThe directional diagram causing, can make paraboloidal-reflector antenna in two frequency ranges, have high antenna efficiency, low sideLobe level, also can make two frequency ranges have the advantages such as good frequency range and polarization isolation simultaneously.
A kind of simple type dual-band dual-circular polarization feed for paraboloidal-reflector antenna of the present invention (being called for short this feed), bagDraw together: the circular radiation patch of eight L-type probe feeds. It is characterized in that: the form of described radiator is circularMetal patch, adopts eight L-type probes to arrange around circumference equal angles, and the feed probes of frequency 1 and 2 is handed overWrong distribution, gives respectively four probe feeds by printing-type circular polarisation network. Wherein four probe vertical componentsCenter line change with frequency from the distance of radiation disc centre, when frequency is high, center line is closeThe center of radiation disk, this also means when frequency is high, the area of radiation areas is corresponding to diminish. Frequency is lowCenter line is away from the center of radiation disk. The area phase strain of radiation areas is large. Thereby ensure two frequency rangesInside there is approximate consistent directional diagram. While is due to two public radiation patch of frequency range, and radiation patchPhase center be positioned at the surface of radiation patch, ensure that like this two frequency ranges have approximate consistent phase center.Be L-type probe feed due to what adopt simultaneously, can in two frequency bands, all can there is wider work frequentlyBe with, ensured the reliability of system.
The present invention has approximate consistent directional diagram and unified phase center, each frequency range in two frequency bandsCan select different circular polarisation modes to work. With respect to public one Double frequency feed source inputing or outputing mouthful andSpeech, this feed can have good polarization isolation or frequency range isolation. Owing to adopting L-type probe coupling feed,Can in two frequency ranges, all there is wide frequency band. The height of feed only has 0.117 wavelength of low-limit frequency,There is low cross-section structure. The diameter of this feed only has 0.86 wavelength of low-limit frequency simultaneously, has screeningThe little feature of gear effect. These advantages all can improve the performance of paraboloidal-reflector antenna.
Brief description of the drawings
Fig. 1 is the overall structure figure of array antenna of the present invention, and in figure, 1 is L shaped feed probes, the 2nd, circularRadiation patch, the 3rd, metal ground plane.
Fig. 2 (a) is that antenna pattern, Fig. 2 (b) of feed different azimuth face in the time of low-frequency range of calculating isThe feed calculating axial ratio figure, Fig. 3 (a) in the time of low-frequency range is feed different azimuth in the time of high band of calculatingThe antenna pattern of face, Fig. 3 (b) are the axial ratio figure of feed in the time of high band calculating.
Detailed description of the invention
Below by accompanying drawing 1, the present invention and advantage thereof are described further.
Contrast Fig. 1, the frequency ratio of the two-band feed of design is 1.13, circular radiation patch is from reflecting plateThe diameter that is highly 0.118 lowest operating frequency wavelength, circular radiation patch is 0.5 lowest operating frequencyWavelength, L shaped probe are the L shaped probe of 0.0745 lowest operating frequency, low-frequency range from the height of reflecting plateThe center line of vertical component and radiation disk border are tangent, the center line of the L shaped probe vertical component of high bandBe 0.0378 lowest operating frequency wavelength, L shaped probe horizontal component from the air line distance of radiation disk borderLength is 0.1677 wavelength of corresponding frequency band. The diameter of reflecting plate is 0.86 wavelength of low-limit frequency. OnState the validity that test result has illustrated array antenna design. By each frequency range printing-type circular polarisation separatelyFeeding network is given respectively 4 feed probes feeds of each frequency range, if according to the each probe of clockwise directionDriving voltage amplitude equate, phase place differ successively 90 or-90 degree, can realize respectively dextrorotation orLeft-hand circular polarization. Can find out this feedback in two frequency ranges from Fig. 2 (a), 2 (b), 3 (a), 3 (b)Source almost has approximate consistent directional diagram, simultaneously at axial and near zone, has good axial ratio characteristic.The diameter of feed is smaller simultaneously, and the occlusion effect that paraboloidal-reflector antenna is caused also will be smaller. ThisA little characteristics all can improve the antenna performance of parabolic reflector.
Claims (1)
1. a dual-band dual-circular polarization feed for paraboloidal-reflector antenna, comprising: the circular radiation by eight L-type probe feeds is pastedSheet, these eight probes are divided into two groups, and every group comprises four probes, and wherein one group of probe is operated in high band, other one group of workIn low-frequency range, four probes of every group are evenly distributed on circumference separately, the center that the center of circumference is circular radiation patch,One group of probe that circle diameter is little is operated in high band, and one group of probe that circle diameter is large is operated in low-frequency range, high band and low frequencyThe feed probes of section is interspersed, and it is characterized in that: eight L-type probes are arranged around circumference equal angles in high band fourProbe changes with frequency from the distance of radiation disc centre, and the center line of four probe vertical components in high band is closeThe center of radiation disk, corresponding the diminishing of area of radiation areas, frequency gets higher; Four probe core lines in high band are away from spokePenetrate the center of disk, the area phase strain of radiation areas is large, frequencies go lower, thus ensure to have in two frequency ranges approximate consistentAntenna pattern, two frequency ranges share circular radiation patch, have ensured that two frequency ranges have approximate consistent phase centerAnd realized compact feed structure, approximate consistent phase center has ensured the aperture efficiency of antenna, and compact feed structure subtractsThe little occlusion effect to antenna adopts L-type probe feed to widen working band simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210089498.4A CN102610927B (en) | 2012-03-30 | 2012-03-30 | A kind of dual-band dual-circular polarization feed for paraboloidal-reflector antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210089498.4A CN102610927B (en) | 2012-03-30 | 2012-03-30 | A kind of dual-band dual-circular polarization feed for paraboloidal-reflector antenna |
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| CN102610927A CN102610927A (en) | 2012-07-25 |
| CN102610927B true CN102610927B (en) | 2016-05-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3007215B1 (en) * | 2013-06-17 | 2015-06-05 | Zodiac Data Systems | SOURCE FOR PARABOLIC ANTENNA |
| CN205385105U (en) * | 2015-04-30 | 2016-07-13 | 滕崴 | Satellite navigation system terminal broadband microstrip antenna |
| CN105428816A (en) * | 2015-11-16 | 2016-03-23 | 中国电子科技集团公司第十研究所 | Left-handed and right-handed double circular polarized wide beam antenna |
| US10096906B2 (en) | 2016-03-02 | 2018-10-09 | Viasat, Inc. | Multi-band, dual-polarization reflector antenna |
| US10594042B2 (en) | 2016-03-02 | 2020-03-17 | Viasat, Inc. | Dual-polarization rippled reflector antenna |
| CN108963449B (en) * | 2018-07-20 | 2023-09-15 | 厦门大学 | Multi-line polarization reconfigurable antenna integrated with artificial magnetic conductor and design method thereof |
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| CN101051707A (en) * | 2007-05-10 | 2007-10-10 | 北京航空航天大学 | Method for designing double frequency round polarized laminated micro band antenna |
| CN102013551A (en) * | 2010-09-15 | 2011-04-13 | 华南理工大学 | Circularly polarized ceramic antenna based on coupling and feeding of strip line via multiple slots |
| US7986279B2 (en) * | 2007-02-14 | 2011-07-26 | Northrop Grumman Systems Corporation | Ring-slot radiator for broad-band operation |
| CN202662818U (en) * | 2012-03-30 | 2013-01-09 | 星动通讯科技（苏州）有限公司 | Dual circularly polarized double-frequency parabolic reflector antenna feed source |
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2012
- 2012-03-30 CN CN201210089498.4A patent/CN102610927B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7986279B2 (en) * | 2007-02-14 | 2011-07-26 | Northrop Grumman Systems Corporation | Ring-slot radiator for broad-band operation |
| CN101051707A (en) * | 2007-05-10 | 2007-10-10 | 北京航空航天大学 | Method for designing double frequency round polarized laminated micro band antenna |
| CN102013551A (en) * | 2010-09-15 | 2011-04-13 | 华南理工大学 | Circularly polarized ceramic antenna based on coupling and feeding of strip line via multiple slots |
| CN202662818U (en) * | 2012-03-30 | 2013-01-09 | 星动通讯科技（苏州）有限公司 | Dual circularly polarized double-frequency parabolic reflector antenna feed source |
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Address after: 215537 Room 601, 1 Chuang Chuang garden, 9 Sihai Road, Changshu economic and Technological Development Zone, Jiangsu. Co-patentee after: Peng Wenfeng Patentee after: Tian Tong Sheng Bang communication technology (Suzhou) Co., Ltd. Address before: 215500 Fuhua Road 15, Changshou City economic and Technological Development Zone, Jiangsu Co-patentee before: Peng Wenfeng Patentee before: Xingdong Communication Technology (Suzhou) Co., Ltd. |
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