A double-reflection and single-transmission metasurface antenna with three beam angles

Abstract

The invention provides a double-reflection single-transmission three-wave-beam included angle metasurface antenna, and aims to simplify an antenna structure while realize three-wave-beam radiation inan all-region space. The antenna comprises a transmission metasurface unit and a feed source clamped between flat plate waveguides; the transmission metasurface unit comprises four V-shaped transmission metasurface structures nested in sequence; the tail ends of two arms of the V-shaped transmission metasurface structure closest to the feed source are connected one reflection metasurface unit to form an included angle metasurface structure; the feed source is fixed on the outer side of the caliber surface of the included angle metasurface structure and positioned on the central axis of the structure; each V-shaped transmission metasurface structure comprises a V-shaped substrate plate, wherein the side surfaces, towards the feed source, of the two arms are equipped with metal patches withgap rings etched in the centers in a printing manner; the patches are positioned on the same plane in the normal direction of the arms; the reflection metasurface structure comprises a rectangular substrate plate; the side surface, towards the feed source, of the substrate plate is equipped with a resonant ring in a printing manner, while a metal bottom plate is printed on the other side surface.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a multi-beam antenna, in particular to a double-reflection and single-transmission three-beam angle metasurface antenna, which can be used in the fields of wireless communication, radar and the like. [0002] technical background [0003] Multi-beam antenna technology can cover a wide range of transmission areas with high gain. The demand for satellite communications, radar reconnaissance, electronic countermeasures, and microwave transmission continues to expand. It has become the next-generation satellite antenna, multi-target tracking radar and global electronic countermeasures. important direction of development. [0004] In the existing research, there are generally three forms of multi-beam antennas with high directional properties: array type, lens type, and reflective type. Due to the advantages of simple structure, mature processing technology, and high gain, lens and ref...

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Problems solved by technology

[0005] Although the above existing studies have realized multi-beam antennas, they all use multi-feed sources to feed in parallel. The antenna feed network is relatively complicated, and it only works in the half-space area.

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