CN104319489A - Millimeter wave antenna with flat band-shaped beams in near field - Google Patents
Millimeter wave antenna with flat band-shaped beams in near field Download PDFInfo
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- CN104319489A CN104319489A CN201410605282.8A CN201410605282A CN104319489A CN 104319489 A CN104319489 A CN 104319489A CN 201410605282 A CN201410605282 A CN 201410605282A CN 104319489 A CN104319489 A CN 104319489A
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- reflection surface
- near field
- millimeter wave
- flat belt
- primary reflection
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Abstract
The invention discloses a millimeter wave antenna with flat band-shaped beams in a near field. The antenna comprises a base, a feed source, an auxiliary reflection surface and a main reflection surface, the feed source and the main reflection surface are fixed to one side of the base, the auxiliary reflection surface is fixed to the side, opposite to the main reflection surface, of the base, the outer contour of the main reflection surface is rectangular, the face type of the main reflection surface is a curved surface, the face type of the auxiliary reflection surface is in a quasi-round shape and the surface of the face type of the auxiliary reflection surface is a quasi-paraboloid. Compared with a traditional antenna, the antenna has a special face type structure, can generate special electric field amplitude and phase distribution at an opening surface, further generates the flat band-shaped beams in a given area of the near field and can be widely used for the fields of high-power millimeter-wave wireless energy transmission, millimeter-wave short-distance communication, millimeter-wave imaging and millimeter-wave plasma heating.
Description
Technical field
The present invention relates to millimeter wave transmitting antenna technical field, specifically refer to a kind of millimeter wave antenna near field with flat belt-like wave beam.
Background technology
Along with the development of millimeter wave and Terahertz Technology, obtain increasing application in fields such as high-power millimeter wave wireless energy transfer, millimeter wave short range communication, mm-wave imaging and millimeter wave plasma heatings.Wherein in some application, target is positioned at the near-field region of antenna, and there is unique spatial characteristics, require that the wave beam of antenna transmission has flat ribbon beam near field certain distance annex, to improve the coupling efficiency with target, and at present the flat beam in conventional microwave field generally refers to far-field pattern one direction angular width is wider and wave beam that another orthogonal direction angular width is narrower, the flat belt-like wave beam in this and near field has a great difference, near field flat belt-like wave beam refers in a certain distance of distance of near field antenna, on the cross section of wave beam, the spatial distribution of power is that a directional spreding is wider, another directional spreding is narrower, form banded wave beam.
Summary of the invention
The object of this invention is to provide a kind of millimeter wave antenna near field with flat belt-like wave beam, the pair of novel curved surface face type, interarea is utilized to combine, produce novel actinal surface electric field amplitude and PHASE DISTRIBUTION, thus in the given area near field, form flat ribbon beam, to adapt to the spatial characteristics of near-field target in some application.
The present invention adopts following technical scheme for achieving the above object:
Have a millimeter wave antenna for flat belt-like wave beam near field, comprise base, feed, subreflector, primary reflection surface, described feed and primary reflection surface are fixed on the side on base, and subreflector is fixed on the base opposite side in the opposite direction of primary reflection surface;
The outer contour shape of described primary reflection surface is rectangle, and the face type of primary reflection surface is curved surface;
The face type of described subreflector is as the criterion circular contour, and face type surface type is as the criterion parabola.
In technique scheme, the face type of described primary reflection surface is lower concave curved surface.
In technique scheme, the lower concave curved surface both sides of described primary reflection surface are provided with the lower dimpled grain of two strips.
In technique scheme, described lower dimpled grain is distributed in lower concave curved surface both sides along the long axis direction of primary reflection surface.
In technique scheme, the accurate parabola of described subreflector is provided with convex epirelief.
In technique scheme, described convex epirelief has two, and convex epirelief is strip.
In technique scheme, described strip convex epirelief is arranged along the long axis direction of subreflector.
A kind of millimeter wave antenna near field with flat belt-like wave beam, the wave beam actinal surface edge that described antenna transmission goes out is rectangle, the long axis normal of rectangle major axis and flat beam, actinal surface amplitude distribution is in major axis left and right specular, and the upper and lower specular of minor axis, rearranged by three long ellipses, transverse and actinal surface rectangle longer axis parallel.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
Compared with traditional antenna, the present invention has special surface structure, special electric field amplitude and PHASE DISTRIBUTION can be produced at actinal surface place, and then flat ribbon beam is produced in given area, near field, the fields such as high-power millimeter wave wireless energy transfer, millimeter wave short range communication, mm-wave imaging and millimeter wave plasma heating can be widely used in.
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 the schematic shapes of the wave beam that the present invention produces;
Fig. 3 is the schematic diagram of primary reflection surface of the present invention;
Fig. 4 is the schematic diagram of subreflector of the present invention;
The beam amplitude distribution map that Fig. 5 is operating frequency of the present invention when being 95GHz;
The beam phase distribution map that Fig. 6 is operating frequency of the present invention when being 95GHz;
Wherein: 1 is base, 2 is Gaussian feed, and 3 is subreflectors, and 4 is primary reflection surfaces, and 5 is Antenna apertures, and 6 is near field flat belt-like millimeter wave wave beams.
Embodiment
It is structural representation of the present invention as shown in Fig. 1, the present invention is the same with conventional antenna all has base, Gaussian feed, subreflector and primary reflection surface, mounting structure is also the same with traditional antenna, and the present invention is on the surface structure of primary reflection surface and subreflector different from the difference of traditional antenna.
As shown in Figure 3, the type surface, face of primary reflection surface of the present invention is not smooth, the outer contour shape of whole primary reflection surface is rectangle, and the surface of primary reflection surface is recessed curved surface, and what at lower concave curved surface, the long axis direction of primary reflection surface is provided with two strips descends dimpled grain more deeply.
As shown in Figure 4, the curved surface face type quasi-circular profile of subreflector of the present invention, its face type is as the criterion paraboloid surface type, and face type has the convex epirelief of two strips, and convex epirelief is arranged along long axis direction, realizes Gaussian beam to be split into three lobes.
As shown in Figure 2, utilize the antenna of structure of the present invention, the wave beam actinal surface amplitude distribution that antenna transmission goes out is that actinal surface edge is rectangle, the long axis normal of rectangle major axis and the desired flat beam obtained, actinal surface amplitude distribution is about major axis left and right specular, and about the upper and lower specular of minor axis, rearranged by three long ellipses, transverse and actinal surface rectangle longer axis parallel, a middle oval field intensity is comparatively strong, and the oval field intensity being positioned at both sides is more weak.
First its operation principle is described in conjunction with the embodiments.
Design a operating frequency 95GHz by the solution of the present invention, the near field of bore 1m × 2m has the millimeter wave antenna of flat belt-like wave beam.Feed Horn gives off the millimeter wave Gaussian beam that cross section is gaussian shaped profile, waist radius is 34mm, phase only pupil filter back reflection is carried out by the subreflector with special type being positioned at wave beam front, form the wave beam of electric field magnitude distribution similar square-section as shown in Figure 5 and be irradiated on the primary reflection surface of rectangular profile, the primary reflection surface phasing back reflection of design is passed through to actinal surface again by curved surface face type, actinal surface is formed electric field magnitude distribution electric field phase distribution as shown in Figure 6 as shown in Figure 5, actinal surface electric field amplitude as shown in Figure 2 and PHASE DISTRIBUTION just (being near distance 120m in this example) can produce the millimeter wave ribbon beam of flat cross section near a distance near field, ribbon beam major cross-sectional axis is 2m, minor axis is 0.26m, long, the ratio of minor axis reaches 7.7 times.
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 (9)
1. one kind has the millimeter wave antenna of flat belt-like wave beam near field, comprise base, feed, subreflector, primary reflection surface, described feed and primary reflection surface are fixed on the side on base, and subreflector is fixed on the base opposite side in the opposite direction of primary reflection surface; It is characterized in that:
The outer contour shape of described primary reflection surface is rectangle, and the face type of primary reflection surface is curved surface;
The face type of described subreflector is as the criterion circular contour, and face type surface type is as the criterion parabola.
2. a kind of millimeter wave antenna near field with flat belt-like wave beam according to claim 1, is characterized in that the face type of described primary reflection surface is lower concave curved surface.
3. a kind of millimeter wave antenna near field with flat belt-like wave beam according to claim 2, is characterized in that the lower concave curved surface both sides of described primary reflection surface are provided with the lower dimpled grain of two strips.
4. a kind of millimeter wave antenna near field with flat belt-like wave beam according to claim 3, is characterized in that described lower dimpled grain is distributed in lower concave curved surface both sides along the long axis direction of primary reflection surface.
5. a kind of millimeter wave antenna near field with flat belt-like wave beam according to claim 1, the accurate parabola that it is characterized in that described subreflector is provided with convex epirelief.
6. a kind of millimeter wave antenna near field with flat belt-like wave beam according to claim 5, is characterized in that described convex epirelief has two, and convex epirelief is strip.
7. a kind of millimeter wave antenna near field with flat belt-like wave beam according to claim 6, is characterized in that described strip convex epirelief is arranged along the long axis direction of subreflector.
8. one kind has the millimeter wave antenna of flat belt-like wave beam near field, it is characterized in that the wave beam actinal surface edge that described antenna transmission goes out is rectangle, the long axis normal of rectangle major axis and flat beam, actinal surface amplitude distribution is in major axis left and right specular, and the upper and lower specular of minor axis, rearranged by three long ellipses, transverse and actinal surface rectangle longer axis parallel.
9. a kind of millimeter wave antenna near field with flat belt-like wave beam according to claim 8, is characterized in that the major axis dimension of described beam cross-section is greater than 2 with the ratio of minor axis dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605282.8A CN104319489B (en) | 2014-11-03 | 2014-11-03 | Millimeter wave antenna with flat band-shaped beams in near field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605282.8A CN104319489B (en) | 2014-11-03 | 2014-11-03 | Millimeter wave antenna with flat band-shaped beams in near field |
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| Publication Number | Publication Date |
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| CN104319489A true CN104319489A (en) | 2015-01-28 |
| CN104319489B CN104319489B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410605282.8A Active CN104319489B (en) | 2014-11-03 | 2014-11-03 | Millimeter wave antenna with flat band-shaped beams in near field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193969A (en) * | 2018-07-18 | 2019-01-11 | 中国电子科技集团公司第七研究所 | A kind of microwave power transmission system and emulation mode suitable for mobile target |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998049750A1 (en) * | 1997-04-29 | 1998-11-05 | Era Patents Limited | Twist reflector antenna |
| US6172650B1 (en) * | 1998-07-02 | 2001-01-09 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Antenna system |
| EP2264833A2 (en) * | 2009-06-04 | 2010-12-22 | Alcatel Lucent | Secondary reflector of a parabolic antenna |
| CN103730735A (en) * | 2014-01-06 | 2014-04-16 | 中国工程物理研究院应用电子学研究所 | Millimeter wave double-reflecting-face antenna with near-field uniform wave beams |
| CN204156098U (en) * | 2014-11-03 | 2015-02-11 | 中国工程物理研究院应用电子学研究所 | A kind of millimeter wave antenna near field with flat belt-like wave beam |
-
2014
- 2014-11-03 CN CN201410605282.8A patent/CN104319489B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998049750A1 (en) * | 1997-04-29 | 1998-11-05 | Era Patents Limited | Twist reflector antenna |
| US6172650B1 (en) * | 1998-07-02 | 2001-01-09 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Antenna system |
| EP2264833A2 (en) * | 2009-06-04 | 2010-12-22 | Alcatel Lucent | Secondary reflector of a parabolic antenna |
| CN103730735A (en) * | 2014-01-06 | 2014-04-16 | 中国工程物理研究院应用电子学研究所 | Millimeter wave double-reflecting-face antenna with near-field uniform wave beams |
| CN204156098U (en) * | 2014-11-03 | 2015-02-11 | 中国工程物理研究院应用电子学研究所 | A kind of millimeter wave antenna near field with flat belt-like wave beam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193969A (en) * | 2018-07-18 | 2019-01-11 | 中国电子科技集团公司第七研究所 | A kind of microwave power transmission system and emulation mode suitable for mobile target |
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| CN104319489B (en) | 2017-02-22 |
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