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

A lens antenna, circularly polarized technology, applied to antennas, individually powered antenna arrays, antenna grounding switch structures, etc., can solve the problems of large beam gain fluctuation, large lens volume, narrow bandwidth, etc. High beam gain flatness and the effect of reducing gain difference

Active Publication Date: 2019-05-10
SOUTHEAST UNIV
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  • Abstract
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  • Application Information

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

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Embodiment Construction

[0030] The multi-port broadband circularly polarized planar feed antenna array is located near the focal plane of the planar lens, and the vertical distance between the planar feed antenna array and the planar lens is F, and the diameter of the planar lens is D, where 0.3≤F / D≤ 0.6.

[0031] The multi-port broadband circularly polarized planar feed antenna array is composed of a plurality of broadband circularly polarized planar feed antenna units, and each broadband circularly polarized planar feed antenna unit is surrounded by a metal isolation through-hole array.

[0032] The broadband circularly polarized planar feed antenna unit includes an anisotropic impedance surface antenna cladding on the top layer, a planar angle-cut patch antenna on the middle layer and a substrate integrated waveguide on the bottom layer.

[0033] The planar angle-cutting patch antenna located in the middle layer of the feed antenna unit is connected to the substrate integrated waveguide by a metal...

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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...

Claims

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Application Information

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IPC IPC(8): H01Q19/06H01Q21/08H01Q25/00H01Q1/38H01Q1/50H01Q15/02H01Q15/24
CPCH01Q1/38H01Q1/50H01Q15/02H01Q15/24H01Q19/06H01Q21/08H01Q25/00
Inventor 蒋之浩张彦洪伟
Owner SOUTHEAST UNIV
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