Reconfigurable holographic impedance modulation surface antenna based on laminated structure and liquid crystal

Abstract

The invention discloses a reconfigurable holographic impedance modulation surface antenna based on a laminated structure and liquid crystal. The antenna comprises a dielectric frame, and a metal bottom plate is arranged below the dielectric frame; a groove body penetrating through the upper and lower surfaces of the medium frame is formed in the medium frame, a liquid crystal layer is arranged in the groove body, and a dielectric plate is arranged on the liquid crystal layer; and the upper surface and the lower surface of the dielectric plate are each provided with eight laminated structure periodic slot units which are sequentially arranged, and each laminated structure periodic slot unit comprises four metal through holes penetrating through the dielectric plate, seven metal patches and two longitudinal metal strips located on the bottom face of the dielectric plate. According to the invention, a surface impedance extraction method is adopted to obtain the laminated structure periodic slot units, then the liquid crystal layer is loaded in the dielectric frame, and voltage bias regulation and control are carried out on the liquid crystal layer, so that the laminated structure reconfigurable periodic slot units are formed, and the reconfiguration of the directional diagram is realized.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a reconfigurable holographic impedance modulation surface antenna based on laminated structures and liquid crystals. Background technique [0002] Antenna is an important part of wireless communication, perception, detection and identification systems. It mainly realizes the transmission and reception of electromagnetic waves. Its working performance and physical characteristics affect the performance of the entire system. In recent years, holographic technology has been widely used in the field of microwave antennas, and new antennas such as holographic metasurface antennas and holographic impedance modulation antennas have emerged. The holographic antenna has the characteristics of low profile, low profile, and small volume, so it can be installed on the surface of various objects very concealedly to achieve a coplanar structure. Moreover, the holographic antenna has a simple structure...

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Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a reconfigurable holographic impedance modulation surface antenna based on laminated structure and liquid crystal, which solves the problem of lack of adjustability in the pattern of traditional holographic antennas

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