Beam-Scanning Reflectarray With Switchable Polarization Based on Liquid Crystal at Millimeter Wave

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-23 DOI:10.1109/TAP.2024.3518696

Peyman Aghabeyki;Yang Cai;Guangsheng Deng;Gert Frølund Pedersen;Shuai Zhang

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引用次数: 0

Abstract

This study presents a design for a millimeter-wave reflectarray (RA) with simultaneous polarization and beam direction control. A dual-polarized unit cell (UC) based on liquid crystal (LC) material is proposed and an RA is designed accordingly. The UC comprises a back-plate reflector, a double slot-loaded ground plane, and two rectangular patches. The LC material is used between the patches and the common slot-loaded ground plane. By illuminating the UC with a slant polarization, the wave decomposes into two components, and by applying a proper voltage to each patch, the polarization and beam direction can be manipulated. A

$10\times 10$

RA has been fabricated and measured. The horn feed illuminates the RA with a fixed linear polarization, and four types of polarization are generated with a 70° and 100° scanning range in the E- and H-planes, respectively. The measured 3-dB gain bandwidth is 6% and the axial ratio (AR) bandwidth is 5% with around 15% aperture efficiency (AE).

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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques