基于超表面的宽带太赫兹线圆偏振变换器

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI:10.1109/ISAPE.2018.8634379

Congcong Shi, Yannan Jiang, J. Zhao

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引用次数: 2

摘要

有效地操纵电磁波的极化引起了许多领域的研究兴趣，例如太赫兹技术。本文提出了一种在太赫兹频率下基于超表面的宽带线性圆(LTC)极化变换器。所提出的转换器包括由图案金属条、电介质层和全反射金镜组成的周期单元电池。在0.536 ~ 1.270 thz的频率范围内，转换器可以将线极化波转换成轴比小于3dB的圆极化波。仿真结果表明，相对带宽达到81.28%，效率高于74%，实现了宽带LTC极化转换。

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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Broadband Terahertz Linear-to-Circular Polarization Converter based on Metasurface

Effective manipulation of polarization of electromagnetic (EM) waves has drawn a lot of research interests in many fields, such as the terahertz (THz) technology. In this paper, a broadband linear-to-circular (LTC) polarization converter based on metasurface is proposed in THz frequency. The proposed converter consists of periodic unit cells which are formed by patterned metal strips, a dielectric layer, and a fully reflective gold mirror. In the frequency range of 0.536-1.270THz, the converter can convert linear polarization wave into circular polarization wave with the axis ratio less than 3dB. The simulated results indicate that the relative bandwidth reaches 81.28% and the efficiency is higher than 74%, thus, the broadband LTC polarization conversion has been realized.

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2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)

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