CN103730735B - A kind of millimeter wave dual reflector antenna with near-field uniform wave beam - Google Patents
A kind of millimeter wave dual reflector antenna with near-field uniform wave beam Download PDFInfo
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- CN103730735B CN103730735B CN201410003859.8A CN201410003859A CN103730735B CN 103730735 B CN103730735 B CN 103730735B CN 201410003859 A CN201410003859 A CN 201410003859A CN 103730735 B CN103730735 B CN 103730735B
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Abstract
The invention discloses a kind of millimeter wave dual reflector antenna with near-field uniform wave beam, comprise pedestal, primary reflection surface, subreflector and corrugation loudspeaker feed source, described corrugation loudspeaker feed source is fixed on pedestal, at the front fixed joint reflecting surface of corrugation loudspeaker feed source, fix primary reflection surface at the rear of corrugation loudspeaker feed source; The central area that it is characterized by described primary reflection surface is the ellipsoid type of approximate focus, and primary reflection surface is the ripple underlying surface type of ring-type convex-concave composition near outer edge region; By improving the primary reflection surface face type of dual reflector antenna, the millimeter wave wave beam given off from Feed Horn is after subreflector and primary reflection surface two secondary reflection, special actinal surface PHASE DISTRIBUTION described in formation, power density and all very uniform pencil type beam of wave beam radius is created in the distance range of near field 1.2m ~ 4.0m, shake is less than 10%, can be widely used in the fields such as millimeter wave short-haul connections, mm-wave imaging and millimeter wave power wireless transmission.
Description
Technical field
The present invention relates to millimeter wave antenna technical field, specifically refer to a kind of millimeter wave dual reflector antenna with near-field uniform wave beam.
Background technology
Based on the Active denial system (ADS of high-power millimeter wave, ActiveDenialSystem) be that the U.S. disperses equipment in the novel non-lethal crowd of one that early 1990s proposes, its general principle is the high-power millimeter wave beam by being about 3mm to target group's radiated wave, within the several seconds, make human body skin produce insufferable scorching hot pain and flee from this region by the light of nature, reach the object prevented and disperse a crowd.
The high-power millimeter wave antenna abroad developed at present all adopts focused radiation mode, make the EFFECTIVE RANGE wider range in near-field region, but the power density change of wave beam in the zone of action that this mode produces is very violent, exist higher than the even higher position of effective power density twice, if target group is positioned at the too high position of these power densities and can not flees from time, third-degree burn probably will be caused; If crowd is positioned at the too low position of power density, the effective utilization of ADS system will reduce greatly, cannot play the effective defence effect to target.Therefore a kind of high-power millimeter wave transmitting antenna near field with even wave beam is badly in need of, power density and the basically identical millimeter wave wave beam of wave beam radius is produced in the distance range expected, so both can expand the effective range of high-power millimeter-wave radiation system, the personal safety of target can have been guaranteed again.
Summary of the invention
The object of the invention is to invent a kind of millimeter wave antenna that can produce even pencil type beam within the scope of the certain distance of antenna near-field, by carrying out Shape design to the curved surface of major and minor reflecting surface, produce special Antenna aperture amplitude and PHASE DISTRIBUTION, thus obtaining beam power density and the uniform pencil type beam of wave beam radius within the scope of certain distance in near-field region, when the Active denial system in the world that solves at present adopts focusing millimeter wave antenna, near field wave beam is with the violent deficiency of distance change.
The technical solution used in the present invention is: a kind of millimeter wave dual reflector antenna with near-field uniform wave beam, comprise pedestal, primary reflection surface, subreflector and corrugation loudspeaker feed source, described corrugation loudspeaker feed source is fixed on pedestal, at the front fixed joint reflecting surface of corrugation loudspeaker feed source, fix primary reflection surface at the rear of corrugation loudspeaker feed source; The central area of described primary reflection surface is the ellipsoid type of approximate focus, and primary reflection surface is the ripple underlying surface type of ring-type convex-concave composition near outer edge region.
In technique scheme, described corrugation loudspeaker feed source through subreflector, primary reflection surface reflect to form actinal surface electric field for twice, the amplitude of described actinal surface electric field is symmetrical parabola shaped distribution, and edge illumination is 0.
In technique scheme, the phase center region of described actinal surface electric field is parabola shaped distribution, and edge is symmetrical hunting.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: by improving the primary reflection surface of dual reflector antenna, the millimeter wave wave beam given off from Feed Horn is after subreflector and primary reflection surface two secondary reflection, special actinal surface PHASE DISTRIBUTION described in formation, power density and all very uniform pencil type beam of wave beam radius is created in the distance range of near field 1.2m ~ 4.0m, shake is less than 10%, can be widely used in the fields such as millimeter wave short-haul connections, mm-wave imaging and millimeter wave power wireless transmission.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is operation principle schematic diagram of the present invention;
Fig. 3 is the actinal surface electric field magnitude radial distribution of antenna in the present invention;
Fig. 4 is the actinal surface electric field phase radial distribution of antenna in the present invention;
Fig. 5 is the power density distribution of inventive antenna on the axis of near field.
Wherein: 1 is corrugation loudspeaker feed source; 2 is subreflectors; 3 is primary reflection surfaces; 4 is Antenna apertures; 5 is the even wave beams produced.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
As shown in Figure 1, the dual reflector antenna in the present invention, the central area of primary reflection surface described in its primary reflection surface is the ellipsoid type of approximate focus, and primary reflection surface is the ripple underlying surface type of ring-type convex-concave composition near outer edge region.
As shown in Figure 2, the millimeter wave wave beam that corrugation loudspeaker feed source 1 gives off reflexes on primary reflection surface 3 through subreflector 2, primary reflection surface 3 reflects wave beam again, Antenna aperture distribution 4 described in being formed before primary reflection surface 3, finally forms beam power density and all very uniform pencil type beam of wave beam radius near field.
As shown in Figure 3, the wave beam that interarea reflects is in the electric field magnitude radial distribution of Antenna aperture 4, and amplitude is rotational symmetric parabola shaped distribution, and edge illumination is 0.
As shown in Figure 4, the wave beam that interarea reflects is in the electric field phase radial distribution of Antenna aperture 4, and phase center region is rotational symmetric parabola shaped distribution, and outward flange position is rotational symmetric irregular ripple vibration.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (3)
1. one kind has the millimeter wave dual reflector antenna of near-field uniform wave beam, comprise pedestal, primary reflection surface, subreflector and corrugation loudspeaker feed source, described corrugation loudspeaker feed source is fixed on pedestal, at the front fixed joint reflecting surface of corrugation loudspeaker feed source, fix primary reflection surface at the rear of corrugation loudspeaker feed source; The central area that it is characterized by described primary reflection surface is the ellipsoid type of approximate focus, primary reflection surface is the ripple underlying surface type of ring-type convex-concave composition near outer edge region, and the millimeter wave wave beam that corrugation loudspeaker feed source gives off finally forms beam power density and all very uniform pencil type beam of wave beam radius near field.
2. a kind of millimeter wave dual reflector antenna with near-field uniform wave beam according to claim 1, described corrugation loudspeaker feed source through subreflector, primary reflection surface reflect to form special actinal surface Electric Field Distribution for twice, the amplitude that it is characterized by described actinal surface electric field is rotational symmetric parabola shaped distribution, and edge illumination is 0.
3. a kind of millimeter wave dual reflector antenna with near-field uniform wave beam according to claim 2, it is characterized by described actinal surface electric field phase, to be distributed in central area be rotational symmetric parabola shaped, and edge is rotational symmetric irregular ripple vibration.
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| CN201410003859.8A CN103730735B (en) | 2014-01-06 | 2014-01-06 | A kind of millimeter wave dual reflector antenna with near-field uniform wave beam |
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| CN201410003859.8A CN103730735B (en) | 2014-01-06 | 2014-01-06 | A kind of millimeter wave dual reflector antenna with near-field uniform wave beam |
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| CN103730735B true CN103730735B (en) | 2016-03-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3020505B1 (en) * | 2014-04-25 | 2016-05-13 | Thales Sa | ASSEMBLY OF TWO DOUBLE-REFLECTING ANTENNAS MOUNTED ON A COMMON SUPPORT AND A SATELLITE COMPRISING THIS ASSEMBLY |
| CN104319489B (en) * | 2014-11-03 | 2017-02-22 | 中国工程物理研究院应用电子学研究所 | Millimeter wave antenna with flat band-shaped beams in near field |
| CN104319490A (en) * | 2014-11-03 | 2015-01-28 | 中国工程物理研究院应用电子学研究所 | Variable-focus millimeter wave reflector antenna |
| CN104377457B (en) * | 2014-12-01 | 2017-03-22 | 中久安特装备有限公司 | Method for designing near-field uniform-wave-beam millimeter wave antenna |
| CN106482581A (en) * | 2015-08-26 | 2017-03-08 | 上海机电工程研究所 | A kind of Compact Range millimeter wave/infrared complex target device |
| WO2018120197A1 (en) * | 2016-12-30 | 2018-07-05 | 华为技术有限公司 | Antenna and communication device |
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| WO2013150996A1 (en) * | 2012-04-02 | 2013-10-10 | 古野電気株式会社 | Antenna |
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| DE3728976A1 (en) * | 1987-08-29 | 1989-03-09 | Licentia Gmbh | Cassegrain antenna for the microwave band |
| US5512913A (en) * | 1992-07-15 | 1996-04-30 | Staney; Michael W. | Flat plate antenna, scaler collector and supporting structure |
| CN2634666Y (en) * | 2003-05-21 | 2004-08-18 | 李贞德 | Satellite TV receiving antenna with gain compensation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013150996A1 (en) * | 2012-04-02 | 2013-10-10 | 古野電気株式会社 | Antenna |
| CN202633513U (en) * | 2012-04-27 | 2012-12-26 | 西安空间无线电技术研究所 | Ka band transmitting-receiving shared shaped antenna with multiple feed sources and double reflection surfaces |
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| 椭球反射面聚焦天线的设计和仿真;肖辰飞等;《电子测量技术》;20061031;第29卷(第5期);全文 * |
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Effective date of registration: 20160803 Address after: Mianyang City, Sichuan Province, 621054 Mountain Road No. 64 Patentee after: Sichuan Science City Jiuli Technology Industrial Co., Ltd. Address before: 621000 Mianyang, Sichuan, box 1013, box of 919 Patentee before: Applied Electronics Inst., Chinese Engineering Physics Inst. |
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Effective date of registration: 20160907 Address after: 610000, No. 1609, 2039 / F, Tianfu Haitang center, Tianfu Road, Tianfu New District, Sichuan, Chengdu Province, No. 16, building No. Patentee after: Sino long ante Equipment Co., Ltd. Address before: Mianyang City, Sichuan Province, 621054 Mountain Road No. 64 Patentee before: Sichuan Science City Jiuli Technology Industrial Co., Ltd. |