Broadband circularly polarized millimeter wave multi-feed multi-beam lens antenna

Abstract

The invention discloses a broadband circularly polarized millimeter wave multi-feed multi-beam lens antenna. The antenna comprises a multi-port broadband circularly polarized planar feed antenna array(1) and a planar lens (2); a plane of the multi-port broadband circularly polarized planar feed antenna array (1) and a plane of the planar lens (2) are arranged in parallel; and a signal of the multi-port broadband circularly polarized planar feed antenna array (1) is output or received through the planar lens (2). A plurality of focal points are distributed on the planar lens (2) in a phase-shifting mode, and the planar lens is formed by arranging completely identical anisotropic unit structures (5) in a periodic mode. Each anisotropic unit structure (5) is composed of an upper-layer metalpatch (5a), a middle-layer metal patch (5b) and a lower-layer metal patch (5c). The antenna can realize a multi-feed multi-beam characteristic and has a wide application prospect in the aspects of wireless communication and satellite communication.

Description

technical field [0001] The invention belongs to the field of wireless communication system electronic devices, and in particular relates to a broadband circularly polarized millimeter-wave multi-feed multi-beam lens antenna, which has a plurality of input ports, and when each input port is excited, it can generate an independent pointing different Directional circularly polarized high-gain beams, therefore, this antenna can achieve circularly polarized multi-beams in a frequency band close to 20% of the bandwidth to cover a certain area, and can be applied to fifth-generation mobile communications, satellite communications, and millimeter-wave point For multipoint communication and other fields. Background technique [0002] A multi-beam antenna is an electromagnetic wave radiation device that can generate multiple independent beams, and it is widely used in various wireless communication systems. Among them, the passive multi-beam antenna is low in cost and light, and is a...

AI Technical Summary

Problems solved by technology

Although the traditional lens-based multi-beam antenna has good performance, the lens is bulky and heavy, while the planar lens multi-beam antenna based on the planar printing structure can basically only work in a single-line polarization, and the bandwidth is narrow and the beam gain fluctuates. Large, still can not meet the needs of many applications

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