Metamaterial microwave antenna by taking ellipsoid-like metamaterial as auxiliary reflecting surface

Abstract

The invention discloses a metamaterial microwave antenna taking an ellipsoid-like metamaterial as an auxiliary reflecting surface. The antenna comprises a fixed upright post, a rotating post and an arc-shaped shell. The invention relates to the technical field of communication equipment. According to the metamaterial microwave antenna taking an ellipsoid-like metamaterial as an auxiliary reflecting surface, the auxiliary reflecting surface comprises an arc-shaped connecting ring, a first insulating coating layer, a second insulating coating layer, a first reflecting layer, a second reflectinglayer, a dielectric layer, a phase change material layer and a metamaterial layer. The peripheral surfaces of the first insulating coating layer, the second insulating coating layer, the first reflecting layer, the second reflecting layer, the dielectric layer, the phase change material layer and the metamaterial layer are fixedly connected with the inner wall of the arc-shaped connecting ring, the ellipsoidal auxiliary reflecting surface is utilized, and the phase change material layer and the metamaterial layer are arranged in the auxiliary reflecting surface, so that the directivity of themicrowave antenna can be effectively enhanced, the absorption amplitude of the microwave antenna to electromagnetic waves can be harmonized, and the use effect of the microwave antenna is improved.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to a metamaterial microwave antenna with an ellipsoid-like metamaterial as a secondary reflection surface. Background technique [0002] Microwave is a band between ultrashort wave and infrared in the electromagnetic spectrum. It belongs to the band with the shortest wavelength (highest frequency) in radio, and its frequency ranges from 300MHz (wavelength 1m) to 300GHz (wavelength 0.1m). Transmitting or receiving antennas in the meter wave, centimeter wave, millimeter wave and other bands are collectively referred to as microwave antennas. Among microwave antennas, parabolic antennas, horn parabolic antennas, horn antennas and lens antennas are widely used. [0003] Existing microwave antennas usually use a horn antenna as a feed source, and the horn antenna is formed into a parabolic shape. The electromagnetic waves emitted by the horn antenna are radiated outward a...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a metamaterial microwave antenna with an ellipsoid-like metamaterial as a secondary reflector, which solves the problem of weak directivity of the microwave antenna when the microwave antenna radiates the feed signal. , leading to poor effect on signal radiation. In addition, the existing microwave antenna has a fixed absorption range for electromagnetic waves, and the reflection effect on electromagnetic waves is poor, and the use effect of microwave antennas is poor.

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