基于双层超表面的广角宽带圆偏振器

IF 6.7 1区计算机科学 Q1 Physics and Astronomy

Progress in Electromagnetics Research-Pier Pub Date : 2018-01-01 DOI:10.2528/PIER18010922

B. Lin, Jianxin Guo, Yan-wen Wang, Zuliang Wang, Bai-gang Huang, Xiangwen Liu

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引用次数: 14

摘要

本文提出了一种基于双层各向异性超表面的广角宽带透射型圆偏振片，其单位晶片由均匀介质层两侧沉积的两层相同图案金属薄膜组成，金属薄膜的几何图案为围绕同心圆方角截断方形斑块的方形孔径。仿真结果表明，在7.63 ~ 11.13 GHz频率范围内，相对带宽为37.3%的x偏振和y偏振入射下，该偏振器均能实现线性到圆偏振转换，且在大入射角范围内仍能保持稳定的偏振转换性能。此外，它没有不对称传输效应，并且在x偏振和y偏振入射处的传输系数完全相等。最后进行了一次实验，模拟结果与实测结果基本吻合。

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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A Wide-Angle and Wide-Band Circular Polarizer Using a BI-Layer Metasurface

In this work, a wide-angle and wide-band transmission-type circular polarizer based on a bi-layer anisotropic metasurface is proposed, in which the unit cell consists of two layers of identical patterned metal films deposited on the two sides of a homogeneous dielectric layer, and the geometric pattern of the metal film is a square aperture surrounding a concentric square-corner-truncated square patch. The simulated results show that the polarizer can realize a linear-to-circular polarization conversion at both xand y-polarized incidences in the frequency range from 7.63 to 11.13 GHz with a relative bandwidth of 37.3%, and it can maintain a stable polarization conversion performance under large-range incidence angles. Moreover, it has no asymmetric transmission effect, and the transmission coefficients at xand y-polarized incidences are completely equal. Finally, one experiment is carried out, and the simulated and measured results are almost in agreement with each other.

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来源期刊

Progress in Electromagnetics Research-Pier 物理-电信学

CiteScore

7.20

自引率

3.00%

发文量

审稿时长

1.3 months

期刊介绍： Progress In Electromagnetics Research (PIER) publishes peer-reviewed original and comprehensive articles on all aspects of electromagnetic theory and applications. This is an open access, on-line journal PIER (E-ISSN 1559-8985). It has been first published as a monograph series on Electromagnetic Waves (ISSN 1070-4698) in 1989. It is freely available to all readers via the Internet.