CN201364960Y - Submillimeter-wave quasi-optical feeding conical-scanning tracking antenna - Google Patents
Submillimeter-wave quasi-optical feeding conical-scanning tracking antenna Download PDFInfo
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- CN201364960Y CN201364960Y CNU2009200363014U CN200920036301U CN201364960Y CN 201364960 Y CN201364960 Y CN 201364960Y CN U2009200363014 U CNU2009200363014 U CN U2009200363014U CN 200920036301 U CN200920036301 U CN 200920036301U CN 201364960 Y CN201364960 Y CN 201364960Y
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- lens
- wiregrating
- dielectric waveguide
- waveguide transducer
- plane polarization
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Abstract
A submillimeter-wave quasi-optical feeding conical-scanning tracking antenna comprises a Gaussian-beam transforming dielectric lens, a scanning device and a reverse Cassegrain antenna which are in serial arrangement along a central axis. The reverse Cassegrain antenna comprises a parabolic-reflecting wire grid and a plane-polarization reversing wire grid, wherein the grid bars of the parabolic-reflecting wire grid are horizontally arranged, and the grid bars of the plane-polarization reversing wire grid are arranged at an angle of 45 DEG with those of the parabolic-reflecting wire grid. The scanning device comprises an extended hemispherical lens, a lens/medium waveguide converter and a mechanical rotary device driving the extended hemispherical lens and the lens/medium waveguide converter to rotate. The Gaussian-beam transforming dielectric lens, the extended hemispherical lens and the reverse Cassegrain antenna are coaxial, and the axis coincides with the central axis; and the tip of the lens/medium waveguide converter is positioned outside the central axis, and at least reaches the plane-polarization reversing wire grid.
Description
One, technical field
The utility model relates to a kind of conical scan antenna, especially relates to a kind of submillimeter wave quasi-optical feeding conical scanning tracking antenna of submillimeter wave frequency range.
Two, background technology
In modern locating and tracking system,, use conical scan antenna usually in order to realize accurate location.Conical scan antenna at microwave, millimeter wave frequency band is lower owing to frequency, wavelength is longer, makes whole system can adopt coaxial line, waveguide, feed microstrip line, and makes the design of scanning tracking system and process more or less freely.And in the submillimeter wave frequency range, because frequency is higher, all there are very big loss in traditional coaxial line, waveguide, microstrip-fed system, have a strong impact on the electrical property of whole system, and because wavelength has reached the submillimeter magnitude, make the small-sized of whole system, existing scanning tracking system has been proposed quite high machining accuracy, also have bigger risk aspect stability and the reliability.
Three, utility model content
Technical problem: technical problem to be solved in the utility model is the deficiency of using in submillimeter region in the prior art of microwave, millimeter wave frequency band at above-mentioned, and a kind of submillimeter wave quasi-optical feeding conical scanning tracking antenna that is easy to manufacture and design and have good electrical properties is provided.
Technical scheme: a kind of submillimeter wave quasi-optical feeding conical scanning tracking antenna, comprise Gaussian beam conversion medium lens, scanning means and contrary Cassegrain antenna, Gaussian beam conversion medium lens, scanning means and contrary Cassegrain antenna are along the central axis sequence arrangement, contrary Cassegrain antenna comprises parabolic reflector wiregrating and plane polarization torsion line grid, the grizzly bar of described parabolic reflector wiregrating is horizontal, the grizzly bar of wiregrating is reversed in plane polarization and the grizzly bar of parabolic reflector wiregrating is 450, the central authorities of reversing wiregrating in plane polarization are provided with circular hole, scanning means comprises the expansion packaged lens, lens/dielectric waveguide transducer and the mechanical rotation device that is used to drive expansion packaged lens and lens/dielectric waveguide transducer rotation, described Gaussian beam conversion medium lens, expansion packaged lens and contrary Cassegrain antenna coaxial and axis and central axes, lens/dielectric waveguide transducer is total to the bottom surface with the expansion packaged lens, the cross section parallel with the bottom surface of lens/dielectric waveguide transducer be similar figures and diminish gradually and the end of lens/dielectric waveguide transducer is positioned at outside the central axis along the area in the tactic cross section of terminad, bottom surface each other, the movement locus that the end of lens/dielectric waveguide transducer is driven by mechanical rotation device, along the reversing projection on the wiregrating in plane polarization and fall into plane polarization and reverse in the circular hole of wiregrating and the centre of gyration of described movement locus is positioned on the focus of parabolic reflector wiregrating of central axial direction, the end of lens/dielectric waveguide transducer arrives at plane polarization at least and reverses wiregrating.
Beneficial effect: in the submillimeter wave frequency range, the very big loss of existence on feed of the conical scan antenna system schema of original microwave, millimeter wave frequency band, and design, processing to the scanning tracking system all need quite high precision, scheme implementation to become quite difficult.Adopt quasi-optical feed conical scanning tracking antenna of the present utility model, owing to adopt quasi-optical feed system, electromagnetic wave is directed propagating in areas of dielectric, make the loss of submillimeter wave in feeder equipment very little, owing to adopt terminal burnt partially lens/dielectric waveguide transducer to realize conical scanning, make scanning system only need a rotary electric machine to drive and get final product simultaneously, mechanical complexity reduces greatly, and adopted contrary Cassegrain antenna system, make tracking be easy to realize in the spatial domain.
Four, description of drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is a perspective view of the present utility model.
Fig. 3 is the perspective view of contrary Cassegrain antenna in the utility model.
Fig. 4 is that the utility model lens/dielectric waveguide transducer end arrives at the schematic diagram that wiregrating is reversed in plane polarization.
Cross-sectional view when Fig. 5 follows the tracks of for the utility model.
Perspective view when Fig. 6 follows the tracks of for the utility model.
Five, specific embodiments
Below in conjunction with accompanying drawing, the utility model is elaborated.
A kind of submillimeter wave quasi-optical feeding conical scanning tracking antenna, comprise Gaussian beam conversion medium lens 1, scanning means 2 and contrary Cassegrain antenna 3, Gaussian beam conversion medium lens 1, scanning means 2 and contrary Cassegrain antenna 3 are along central axis 4 sequence arrangement, contrary Cassegrain antenna 3 comprises parabolic reflector wiregrating 31 and plane polarization torsion line grid 32, the grizzly bar of described parabolic reflector wiregrating 31 is horizontal, the grizzly bar of wiregrating 32 is reversed in plane polarization and the grizzly bar of parabolic reflector wiregrating 31 is 450, the central authorities of reversing wiregrating 32 in plane polarization are provided with circular hole 321, scanning means 2 comprises expansion packaged lens 21, lens/dielectric waveguide transducer 22 and the mechanical rotation device 23 that is used to drive expansion packaged lens 21 and lens/dielectric waveguide transducer 22 rotations, described Gaussian beam conversion medium lens 1, coaxial and the axis of expansion packaged lens 21 and contrary Cassegrain antenna 3 overlaps with central axis 4, lens/dielectric waveguide transducer 22 is total to the bottom surface with expansion packaged lens 21, the cross section parallel with the bottom surface of lens/dielectric waveguide transducer 22 be similar figures and diminish gradually and the end 221 of lens/dielectric waveguide transducer 22 is positioned at outside the central axis 4 along the area in bottom surface terminad 221 tactic cross sections each other, the movement locus that the end 221 of lens/dielectric waveguide transducer 22 is driven by mechanical rotation device 23, reversing projection on the wiregrating 32 in plane polarization and fall into plane polarization and reverse in the circular hole 321 of wiregrating 32 and the centre of gyration of described movement locus is positioned on the focus of parabolic reflector wiregrating 31 along central axis 4 directions, the end 221 of lens/dielectric waveguide transducer 22 arrives at plane polarization at least and reverses wiregrating 32, in the present embodiment, the end 221 of described lens/dielectric waveguide transducer 22 passes from the circular hole 321 of wiregrating 32 is reversed in plane polarization, as Fig. 1, the end 221 of perhaps described lens/dielectric waveguide transducer 22 arrives at plane polarization and reverses wiregrating 32, as Fig. 4.
Described Gaussian beam transform lens 1 is with the conversion of incident Gaussian beam, again through expansion packaged lens 21 and lens/dielectric waveguide transducer 22 guiding, from end 221 outputs of lens/dielectric waveguide transducer 22.Because lens/dielectric waveguide transducer 22 is an off-axis structure, the end 221 off-center axis 4 of lens/dielectric waveguide transducer 22.When expansion packaged lens 21 and lens/dielectric waveguide transducer 22 rotated under the drive of mechanical rotation device 23, the end of lens/dielectric waveguide transducer 22 221 became circular motion around axle, realizes the inclined to one side focal circle week scanning feed to contrary Cassegrain antenna 3.The horizontally-polarized electromagnetic wave bundle of 221 radiation of end that is the lens/dielectric waveguide transducer 22 of circular motion, when inciding on the parabolic reflector wiregrating 31 of horizontal positioned of contrary Cassegrain antenna 3, because electromagnetic direction of an electric field is parallel with grizzly bar, electromagnetic wave is all reflected.When reflection electromagnetic wave incided the plane polarization that becomes miter angle to place with horizontal plane and reverses on the wiregrating 32, electromagnetic wave was broken down into perpendicular to the component of wiregrating and is parallel to the component of wiregrating.Component perpendicular to wiregrating is directly reflected, and the component that is parallel to wiregrating is reflected after through 180 degree phase shifts, and the vertical component after the reflection makes up with parallel component, obtains the perpendicular polarization electromagnetic wave.When the perpendicular polarization electromagnetic wave that reflects reenters on the parabolic reflector wiregrating 31 that is mapped to horizontal positioned, because electromagnetic direction of an electric field is vertical with grizzly bar, electromagnetic wave is all through parabolic reflector wiregrating 31, and to anterior space radiation, forwardly the space forms main beam 5.Because the offset prime focus feed of the end 221 of lens/dielectric waveguide transducer 22, main beam 5 greatest irradiation deviation in driction antenna axis, and be circular motion around antenna axis along with the rotation of mechanical rotation device 23, realize conical scanning.Reverse wiregrating 32 around its center during at horizontal plane or pitching deflecting facet when plane polarization, the central axis that main beam 5 conical scannings are centered on is realized the tracking of conical scanning also in spatial deflection.In Fig. 5, when plane polarization reverse wiregrating 32 at the pitching deflecting facet in figure during the position, the main beam 5 conical scannings central axis of wanting of doing also deflects into position among the figure, realizes the tracking of conical scanning.
Claims (3)
1, a kind of submillimeter wave quasi-optical feeding conical scanning tracking antenna, it is characterized in that comprising Gaussian beam conversion medium lens (1), scanning means (2) and contrary Cassegrain antenna (3), Gaussian beam conversion medium lens (1), scanning means (2) and contrary Cassegrain antenna (3) are along central axis (4) sequence arrangement, contrary Cassegrain antenna (3) comprises parabolic reflector wiregrating (31) and plane polarization torsion line grid (32), the grizzly bar of described parabolic reflector wiregrating (31) is horizontal, the grizzly bar of wiregrating (32) is reversed in plane polarization and the grizzly bar of parabolic reflector wiregrating (31) is 45 °, the central authorities of reversing wiregrating (32) in plane polarization are provided with circular hole (321), scanning means (2) comprises expansion packaged lens (21), lens/dielectric waveguide transducer (22) and be used for driving the mechanical rotation device (23) of expansion packaged lens (21) and lens/dielectric waveguide transducer (22) rotation, described Gaussian beam conversion medium lens (1), coaxial and the axis of expansion packaged lens (21) and contrary Cassegrain antenna (3) overlaps with central axis (4), lens/dielectric waveguide transducer (22) is total to the bottom surface with expansion packaged lens (21), the cross section parallel with the bottom surface of lens/dielectric waveguide transducer (22) be similar figures and diminish gradually and the end (221) of lens/dielectric waveguide transducer (22) is positioned at outside the central axis (4) along the area in the tactic cross section of bottom surface terminad (221) each other, the movement locus that the end (221) of lens/dielectric waveguide transducer (22) is driven by mechanical rotation device (23), along the reversing projection on the wiregrating (32) in plane polarization and fall into plane polarization and reverse in the circular hole of wiregrating (32) (321) and the centre of gyration of described movement locus is positioned on the focus of parabolic reflector wiregrating (31) of central axis (4) direction, the end (221) of lens/dielectric waveguide transducer (22) arrives at plane polarization at least and reverses wiregrating (32).
2, submillimeter wave quasi-optical feeding conical scanning tracking antenna according to claim 1, the end (221) that it is characterized in that described lens/dielectric waveguide transducer (22) arrives at plane polarization and reverses wiregrating (32).
3, submillimeter wave quasi-optical feeding conical scanning tracking antenna according to claim 1, the end (221) that it is characterized in that described lens/dielectric waveguide transducer (22) passes from the circular hole (321) of wiregrating (32) is reversed in plane polarization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200363014U CN201364960Y (en) | 2009-02-27 | 2009-02-27 | Submillimeter-wave quasi-optical feeding conical-scanning tracking antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200363014U CN201364960Y (en) | 2009-02-27 | 2009-02-27 | Submillimeter-wave quasi-optical feeding conical-scanning tracking antenna |
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| Publication Number | Publication Date |
|---|---|
| CN201364960Y true CN201364960Y (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200363014U Expired - Lifetime CN201364960Y (en) | 2009-02-27 | 2009-02-27 | Submillimeter-wave quasi-optical feeding conical-scanning tracking antenna |
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| CN (1) | CN201364960Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777372A (en) * | 2018-04-27 | 2018-11-09 | 中国科学院微电子研究所 | High-gain phased array microstrip antenna |
| CN110611170A (en) * | 2019-09-09 | 2019-12-24 | 安徽师范大学 | New method for designing remote sensing scanning antenna |
| CN112701481A (en) * | 2020-12-23 | 2021-04-23 | 上海无线电设备研究所 | Double-frequency transmitting-receiving shared antenna |
-
2009
- 2009-02-27 CN CNU2009200363014U patent/CN201364960Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777372A (en) * | 2018-04-27 | 2018-11-09 | 中国科学院微电子研究所 | High-gain phased array microstrip antenna |
| CN108777372B (en) * | 2018-04-27 | 2021-01-12 | 中国科学院微电子研究所 | High-gain phased array microstrip antenna |
| CN110611170A (en) * | 2019-09-09 | 2019-12-24 | 安徽师范大学 | New method for designing remote sensing scanning antenna |
| CN110611170B (en) * | 2019-09-09 | 2021-06-29 | 安徽师范大学 | New method for designing remote sensing scanning antenna |
| CN112701481A (en) * | 2020-12-23 | 2021-04-23 | 上海无线电设备研究所 | Double-frequency transmitting-receiving shared antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091216 Effective date of abandoning: 20090227 |
|
| RGAV | Abandon patent right to avoid regrant |