A millimeter-wave fan-beam cylindrical Lunberg lens antenna based on metal perturbation structure

Abstract

The invention discloses a millimeter wave fan-shaped beam cylindrical Lumberg lens antenna based on a metal perturbation structure, the beam width of the elevation plane reaches 104°, and the scanning of the azimuth plane ±60° is realized. Its structure includes: a cylindrical Lumberg lens located between the upper metal plate (1) and the lower metal plate (2); an arc-shaped feed array (3) located on the focal line of the cylindrical Lumberg lens; located in the radiation aperture of the lens Metal perturbation structures (5) arranged in a circle on the top. The cylindrical Lumberg lens includes a cylindrical filled dielectric sheet (4), and the filled dielectric sheet uses a low-loss microwave substrate as a base material, and is divided into five layers according to a concentric circle structure from the inside to the outside, and each layer has different densities. Through holes, the through hole filling medium is air. The invention is not only lightweight and simple to process, but also greatly improves the beam width of the elevation plane, and simultaneously realizes a wide beam scanning range in the horizontal plane, so that it can be better applied to multi-beam directional communication and beam scanning antennas, especially in the high frequency band of millimeter waves. And applications that require axial arrays.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a lens antenna system for wide-angle scanning, in particular to a millimeter-wave fan-shaped beam cylindrical Lunberg lens antenna based on a metal perturbation structure, which can be used for electronic platforms requiring wide-angle scanning. Background technique [0002] As an important branch of modern antennas, multi-beam antenna (MBA) has been widely used in radar systems, electronic countermeasures and Satellite communications and other technical fields. [0003] At present, the most common multi-beam antennas mainly fall into three categories: multi-beam reflector antennas, multi-beam phased array antennas, and multi-beam lens antennas. With the rapid development of millimeter wave communication systems, the requirements for antenna scanning and beam coverage capabilities in shipboard, airborne and base station systems are getting higher and higher. In the millimeter-...

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Problems solved by technology

[0008] The purpose of the present invention is to propose a fan-shaped beam cylindrical dragon based on a metal perturbation structure in view of the problem of poor coverage of the pitch beam of the cylindrical Lunberg lens and the urgent need to improve the coverage of the pitch beam of the cylindrical Lunberg lens. Berger Lens Antenna

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