CN109830811A - A kind of large caliber wide angle sweep multibeam antenna - Google Patents
A kind of large caliber wide angle sweep multibeam antenna Download PDFInfo
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- CN109830811A CN109830811A CN201910097696.7A CN201910097696A CN109830811A CN 109830811 A CN109830811 A CN 109830811A CN 201910097696 A CN201910097696 A CN 201910097696A CN 109830811 A CN109830811 A CN 109830811A
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Abstract
The present invention relates to one of field of antenna large caliber wide angle sweep multibeam antenna, the large caliber wide angle sweep multibeam antenna includes sphere lens, difference correction lens and feed group.Sphere lens converge in a Spherical Surface S concentric with the sphere lens centre of sphere for collecting/plane of departure electromagnetic wave through difference correction lens.The phase center of each feed of feed group is located in Spherical Surface S, and the axial direction of each feed is consistent with the radial direction of spherical lens always, by changing position and the direction of each feed, realizes the scanning of different beams.The present invention provides a kind of high-gain, multi-beam, large-angle scanning antennas to be realized with a low cost mode.
Description
Technical field
The present invention relates to one of field of antenna large caliber wide angle sweep multibeam antenna, provide a kind of high-gain,
Multi-beam, large-angle scanning antenna are realized with a low cost mode.
Background technique
Multibeam antenna is due to that can be communicated or be monitored to multiple targets simultaneously, in satellite communication, navigation, radio day
The various fields such as text, radar, radio monitoring have a wide range of applications.
For implementation, multibeam antenna can be divided into phased array antenna, reflector antenna and dielectric lens antenna three
Kind.
Multi-beam phased array antenna is made in a different direction using the phase of beam forming network control antenna element
Electromagnetic wave meets " space quadrature " and " phase difference in battle array " identical condition, to form the transient wave of multiple and different directions
Beam.The advantages of direct-injection type multibeam antenna, is that it, can be by analog or digital side there is no aperture blockage and scanning leakage
Formula forms wide-angle scanning beam in radio frequency, intermediate frequency or base band.Due to phased array antenna higher cost, when needing to realize
Price can not often receive when high-gain.
Multi-beam reflection surface antenna irradiates reflecting surface using focal plane arrays (FPA), forms multiple and different directions using offset prime focus feed
Wave beam, but since defocusing can bring gain loss, the spacing of each wave beam of the multibeam antenna of reflecting surface formula extremely has
Limit.
Similar with multi-beam reflection surface antenna, multibeam lens antenna is using di-lens as the directed radiation of electromagnetic wave
Device.The maximum advantage of lens antenna is that its optical system is the sphere of a rotational symmetry, only passes through the movement of feed network
The direction of i.e. changeable wave beam, without rotating heavy reflecting system as such as reflector antenna.By the way that multiple feeds are put
Set the track in different radii, so that it may form multiple wave beams that can arbitrarily change direction, and feed defocusing and leakage is not present
Lose the decline of wave beam performance caused by increasing.Therefore multibeam lens antenna is compared with reflector antenna between more flexible wave beam
Every, wider array of scanning range, and more consistent wave beam performance.But when realizing high-gain, need very huge medium
Lens cause loss in efficiency caused by weight and insertion loss that can not receive.
Summary of the invention
It is an object of the invention to solve the large-angle scanning performance of high-gain multibeam antenna and cost work problem, provide
A kind of large caliber wide angle sweep multibeam antenna.
The technical solution used in the present invention are as follows:
A kind of large caliber wide angle sweep multibeam antenna, including sphere lens, spherical aberration correction lens and feed group, ball
Shape lens are hollow, and the feed group is located at reverse side sphere centre, and feed group carries multiple feeds, and multiple feeds are radial
It is directed toward reverse side spherical surface inner cavity described in reverse side spherical surface inner wall complete scan, spherical aberration correction is set at the mouth face of each feed
Lens, the phase center for multiple feeds that feed group has constitute a concentric circles, and spherical surface where concentric circles is that signal receives spherical surface,
The reception spherical surface and sphere lens is concentric, and the axial direction of the feed and the radial direction of spherical lens are consistent, spherical aberration
Correct lens axial direction and feed it is axially coincident, spherical aberration correction lens focus be located on the central axes of place feed,
Sphere lens receive spherical wave through difference correction lens compensation phase difference pass through to the central axes of feed by feed absorb and it is inverse
Xiang Yuanlu is spread through difference correction lens conversion plane wave direction external radiation.
Wherein, the intersection point that any direction injects the electromagnetic wave of sphere lens and transmission is formed by radioparent forms one and ball
The concentric reverse side spherical surface of shape lens.
Wherein, the feed group is located in reverse side spherical surface.
Wherein, sphere lens 1 are made of anisotropic medium.
Wherein, the feed 4 is helped to distribution, and the scanning area of each feed 4 covers sphere lens inner wall.
It has the advantages that compared with the background technology, the present invention
1. high-gain large-angle scanning can be realized, and performance is almost unchanged with scanning angle.
2. the position that needs change feed on a small spherical surface can realize that required mechanical movement is very
It is small.
3. cost is substantially reduced compared with phased array antenna since receiving-transmitting chain is seldom.
4. performance caused by medium insertion loss is substantially reduced compared with lens antenna since dielectric thickness is relatively thin.
5. there is no blocking for feed and subreflector.
Detailed description of the invention
Fig. 1 is the technical solution schematic illustration that the present invention takes.
Fig. 2 is the refraction of electromagnetic wave path profile of invention.
Specific embodiment
Referring to Fig.1, a kind of large caliber wide angle sweep multibeam antenna, including sphere lens, spherical aberration correction lens and
Feed group, sphere lens are hollow, and any direction injects the electromagnetic wave of sphere lens and transmission is formed by the intersection point group of radioparent
The concentric reverse side spherical surface 7 of Cheng Yiyu sphere lens, the feed group are located at reverse side sphere centre, and sphere lens 1 are using each
Anisotropy medium is made.The feed group is located in reverse side spherical surface.
Feed group carries multiple feeds 4, reverse side described in multiple radial direction reverse side spherical surface inner wall complete scans of feed
Spherical aberration correction lens, the phase for multiple feeds that feed group 3 has are arranged at the mouth face of each feed for spherical surface inner cavity
Center constitutes a concentric circles, and spherical surface where concentric circles is that signal receives spherical surface 5, and the reception spherical surface 5 and sphere lens are concentric,
The axial direction of the feed 4 and the radial direction of spherical lens 1 are consistent, and spherical aberration corrects the axial direction of lens and the axial direction of feed 4
It is overlapped, the focus of spherical aberration correction lens is located on the central axes of place feed 4, and sphere lens receive spherical wave through differing
Lens compensation phase difference is corrected to spread by absorbing simultaneously reverse former road by feed 4 to the central axes of feed 4 through difference correction lens
Conversion plane wave direction external radiation.
Wherein, sphere lens 1 are made of anisotropic material, and sphere lens 1 are spherical shell structure, received can will be put down
Surface wave is converted to the spherical wave converged near the sphere lens centre of sphere, by phase correction lens 2 compensate spherical aberration after by feed 4
It receives, or the spherical wave that feed 4 is emitted, is converted to plain wave emissions after phase correction lens 2 compensate spherical aberration and goes out.
Wherein, feed group 3 can have the identical or different feed 4 of multiple frequency ranges, by the position for changing each feed 4
And direction, realize the scanning of different beams, the feed 4 is distributed at radial omnidirectional, the scanning field area phase of each feed 4
Mutually border on or be overlapped, scanning area covers sphere lens inner wall.
In use because electromagnetic wave can only inevitably occur when process sphere lens along straightline propagation
More or less deviation, deviation line crosspoint will form a concentric reverse side spherical surface 7, and reverse side spherical surface 7 is set on reverse side spherical surface
Plane wave can be converted to by spherical wave electromagnetic wave and then be received by electromagnetic horn by setting lens.
Claims (5)
1. a kind of large caliber wide angle sweep multibeam antenna, it is characterised in that: including sphere lens, spherical aberration correction lens and
Feed group, sphere lens are hollow, and the feed group is located at reverse side sphere centre, and feed group carries multiple feeds (4), multiple
One is arranged at the mouth face of each feed for reverse side spherical surface inner cavity described in the radial direction reverse side spherical surface inner wall complete scan of feed
Spherical aberration corrects lens, and the phase center for multiple feeds that feed group (3) has constitutes a concentric circles, spherical surface where concentric circles
Spherical surface (5) are received for signal, the reception spherical surface (5) and sphere lens are concentric, the axial direction and spherical lens of the feed (4)
(1) radial direction is consistent, and spherical aberration corrects the axial direction of lens and axially coincident, the spherical aberration correction lens of feed (4)
Focus be located on the central axes of place feed (4), sphere lens receive spherical wave through difference correction lens compensation phase difference
It is spread outside through difference correction lens conversion plane wave direction by absorbing simultaneously reverse former road by feed (4) to the central axes of feed (4)
Radiation.
2. a kind of large caliber wide angle sweep multibeam antenna according to claim 1, it is characterised in that: any direction is injected
The intersection point that the electromagnetic waves of sphere lens and transmission are formed by radioparent forms a reverse side spherical surface concentric with sphere lens.
3. a kind of large caliber wide angle sweep multibeam antenna according to claim 1, it is characterised in that: the feed group
In reverse side spherical surface.
4. a kind of large caliber wide angle sweep multibeam antenna according to claims 1 and 2, it is characterised in that: sphere lens
(1) it is made of anisotropic medium.
5. a kind of large caliber wide angle sweep multibeam antenna according to claim 1 or 2, it is characterised in that: the feedback
Source (4) is helped to distribution, and the scanning area of each feed (4) covers sphere lens inner wall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910097696.7A CN109830811B (en) | 2019-01-31 | 2019-01-31 | Large-caliber wide-angle scanning multi-beam antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910097696.7A CN109830811B (en) | 2019-01-31 | 2019-01-31 | Large-caliber wide-angle scanning multi-beam antenna |
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| Publication Number | Publication Date |
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| CN109830811A true CN109830811A (en) | 2019-05-31 |
| CN109830811B CN109830811B (en) | 2024-04-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755815A (en) * | 1971-12-20 | 1973-08-28 | Sperry Rand Corp | Phased array fed lens antenna |
| US4333082A (en) * | 1980-03-31 | 1982-06-01 | Sperry Corporation | Inhomogeneous dielectric dome antenna |
| WO2002073739A1 (en) * | 2001-03-13 | 2002-09-19 | Souren Guerouni | Multibeam spherical antenna system for fixed microwave wireless network |
| CN108110435A (en) * | 2017-12-05 | 2018-06-01 | 上海无线电设备研究所 | The millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading |
| CN108808260A (en) * | 2018-06-06 | 2018-11-13 | 电子科技大学 | A kind of modification cylinder/spherical surface Luneberg lens antenna based on phased array feed |
| CN209730182U (en) * | 2019-01-31 | 2019-12-03 | 中国电子科技集团公司第五十四研究所 | A kind of large caliber wide angle sweep multibeam antenna |
-
2019
- 2019-01-31 CN CN201910097696.7A patent/CN109830811B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755815A (en) * | 1971-12-20 | 1973-08-28 | Sperry Rand Corp | Phased array fed lens antenna |
| US4333082A (en) * | 1980-03-31 | 1982-06-01 | Sperry Corporation | Inhomogeneous dielectric dome antenna |
| WO2002073739A1 (en) * | 2001-03-13 | 2002-09-19 | Souren Guerouni | Multibeam spherical antenna system for fixed microwave wireless network |
| CN108110435A (en) * | 2017-12-05 | 2018-06-01 | 上海无线电设备研究所 | The millimeter wave high-gain circularly-polarizedhorn horn antenna of single medium plane lens loading |
| CN108808260A (en) * | 2018-06-06 | 2018-11-13 | 电子科技大学 | A kind of modification cylinder/spherical surface Luneberg lens antenna based on phased array feed |
| CN209730182U (en) * | 2019-01-31 | 2019-12-03 | 中国电子科技集团公司第五十四研究所 | A kind of large caliber wide angle sweep multibeam antenna |
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| CN109830811B (en) | 2024-04-16 |
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