Millimeter wave multi-beam antenna for positioning

Abstract

The invention discloses a millimeter wave multi-beam antenna for positioning. The millimeter wave multi-beam antenna comprises a main reflection surface and an auxiliary reflection surface which are parallel and coaxial with each other. The auxiliary reflection surface is connected to the main reflection surface via an assembling device. The assembling device can make the auxiliary reflection surface fixed relative to the main reflection surface, and can make the auxiliary reflection surface move coaxially relative to the main reflection surface in a direction perpendicular to the main reflection surface. The millimeter wave multi-beam antenna further comprises a feed source array and a feed network. The aperture surface of the feed source array and the virtual focus of the auxiliary reflection surface are on the same plane in parallel to the main reflection surface. A compact high-gain multi-beam antenna is achieved through a double-reflection structure and the feed source array, effectively increases the field of view coverage and improves positioning sensitivity.

Description

technical field [0001] The invention relates to antenna technology, in particular to a millimeter-wave multi-beam antenna for positioning. Background technique [0002] Compared with single-beam antennas, multi-beam antennas have the characteristics of increasing beam coverage. With the development of millimeter-wave technology and people's requirements for multi-beam antennas are getting higher and higher, millimeter-wave multi-beam antennas for positioning have great potential. Value. [0003] Multi-beam antennas are generally divided into phased array multi-beam antennas, lens multi-beam antennas, and reflector multi-beam antennas. There are many types of reflector-type multi-beam antennas. Beams The simplest, cheapest, and most reliable form of antenna, one is the single-dish multi-beam antenna, but its performance degrades severely when the feed is off focus, limiting the number of beams and therefore the small field of view. In the application of radar positioning, t...

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Problems solved by technology

[0003] Multi-beam antennas are generally divided into phased array multi-beam antennas, lens multi-beam antennas, and reflector multi-beam antennas. There are many types of reflector-type multi-beam antennas. Beam The simplest, cheapest, and most reliable form of antenna, one of which is a single-dish multi-beam antenna, but its performance degrades severely when the feed is off focus, limiting the number of beams and therefore a small field of view

In the application of radar positioning, the currently commonly used Cassegrain antenna is limited to single or several beam positioning, and the coverage of the field of view is very small.

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