A Wideband Circularly Polarized Transmitarray Using Parallel Dielectric Plate-Based Unit Cells With Negative Anisotropy Slop

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-08-02 DOI:10.1109/LAWP.2024.3437664

Wu-Guang Zhao;Fan Wu;Geng-bo Wu;Jingxue Wang;Zhi Hao Jiang;Ronan Sauleau;Wei Hong

引用次数: 0

Abstract

A solution to enhance the axial ratio (AR) bandwidth of a circularly polarized (CP) planar transmitarray using 3-D printed parallel dielectric plate unit cells is presented here. Unlike the conventional anisotropic structure with positive anisotropic slope property, a structure with negative anisotropic slope property is proposed, which exhibits a wider polarization conversion bandwidth. By further incorporating element rotation and geometrical variation, a six-state phase adjustment scheme is adopted to design a 540-element circular-aperture CP transmitarray. Promising results are demonstrated experimentally, showing an aperture efficiency of 41%, a wide 1 dB gain bandwidth of 25% and an overlapped 3 dB gain and AR bandwidth of 42.4%. With these substantial advancements, the proposed approach opens exciting avenues for designing wideband polarizers and discrete lenses based on 3-D-printed anisotropic structures.

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使用具有负各向异性斜度的平行介质板单元的宽带圆极化透射阵列

本文提出了一种利用三维打印平行介质板单元电池提高圆极化平面发射阵列轴比带宽的解决方案。与具有正各向异性斜率特性的传统各向异性结构不同，提出了具有负各向异性斜率特性的结构，该结构具有更宽的极化转换带宽。在进一步考虑元件旋转和几何变化的基础上，采用六态相位调整方案设计了540元圆孔径CP发射阵列。实验结果表明，孔径效率为41%，宽1db增益带宽为25%，重叠3db增益和AR带宽为42.4%。随着这些实质性的进步，所提出的方法为设计基于3d打印各向异性结构的宽带偏振片和离散透镜开辟了令人兴奋的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.