Meta-material microwave antenna using ellipsoid-like shaped meta-material as sub reflection surface

Abstract

The invention discloses a meta-material microwave antenna using an ellipsoid-like shaped meta-material as a sub reflection surface. The meta-material microwave antenna comprises a meta-material panel, a feeder source and a sub reflection surface, wherein a centre hole is formed at the centre of the meta-material panel; the meta-material panel comprises a core layer and a reflection board arranged on one side surface of the core layer; the core layer comprises at least one core layer sheet layer; the core layer sheet layer comprises a sheet-shaped base material and a plurality of manmade micro structures which are arranged on the base material; the feeder source is arranged on the centre hole; the sub reflection surface is the meta-material board including the core layer and the reflection board, and used for converging the electromagnetic wave converged from the meta-material panel to the feeder source. The meta-material microwave antenna uses the meta-material board with an wave beam expansion function similar to that of a rotary elliptical surface as the sub reflection surface, so that the structure of the meta-material microwave antenna is compact, and the effect of the meta-material microwave antenna is equal to the microwave antenna with a long focal length; simultaneously, the energy distribution on the aperture surface is adjusted to improve the aperture efficiency, so as to acquire good far-field radiation field response. Besides, the meta-material microwave antenna is small in processing difficulty and low in cost.

Description

technical field [0001] The invention relates to the communication field, and more specifically, relates to a metamaterial microwave antenna with an ellipsoidal 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 working in the meter wave, decimeter 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] For example, the existing satellite TV receiving antenna is a parabolic antenna, and the parabolic antenna is responsible for reflecting satellite signals into the feed source and tuner. ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a metamaterial microwave antenna with simple processing and low manufacturing cost, which uses an ellipsoidal metamaterial as the secondary reflector for the existing microwave antennas, which are difficult to process and high in cost.

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