LENS ANTENNA WITH ELECTRONIC BEAM STEERING CAPABILITIES
First Claim
1. A lens antenna providing electronic beam scanning, the antenna comprising:
- a) a homogeneous dielectric lens having a collimating surface from one side and a plane surface from another side, b) antenna elements, and c) a switching circuit applying a signal to at least one of the antenna elements, characterized in that the antenna elements are hollow horn antenna elements made or covered by metal, and the antenna elements are mounted on the plane surface of the dielectric lens such that said antenna elements radiate into the dielectric lens.
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Abstract
The invention discloses a lens antenna with high directivity intended for use in radio-relay communication systems, said antenna providing the capability of electronic steering of the main radiation pattern beam by switching between horn antenna elements placed on a plane focal surface of the lens. Electronic beam steering allows antenna to automatically adjust the beam direction during initial alignment of transmitting and receiving antennas and in case of small antenna orientation changes observed due to the influence of different reasons (wind, vibrations, compression and/or extension of portions of the supporting structures with the temperature changes, etc.). The technical result of the invention is the increase of the antenna directivity with simultaneously provided capability of scanning the beam in a continuous angle range and also the increase of the antenna radiation efficiency and, consequently, the increase of the lens antenna gain. This result is achieved by the implementation of horn antenna elements with optimized geometry.
247 Citations
20 Claims
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1. A lens antenna providing electronic beam scanning, the antenna comprising:
- a) a homogeneous dielectric lens having a collimating surface from one side and a plane surface from another side, b) antenna elements, and c) a switching circuit applying a signal to at least one of the antenna elements, characterized in that the antenna elements are hollow horn antenna elements made or covered by metal, and the antenna elements are mounted on the plane surface of the dielectric lens such that said antenna elements radiate into the dielectric lens.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20)
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15. The antenna according to claim 15, wherein the cylindrical extension of the lens is truncated by a cone with a vertex lying outside the lens on its axis.
Specification