一种宽带高效反射型超材料极化旋转器

doi:10.3969/j.issn.1001-2400.2017.05.029

西安电子科技大学学报

一种宽带高效反射型超材料极化旋转器

任宇辉1,2;丁君1;郭陈江1;邢天璋2;王夫蔚2

(1. 西北工业大学电子信息学院，陕西西安 710129；
2. 西北大学信息科学与技术学院，陕西西安 710069)

收稿日期:2017-03-20 出版日期:2017-10-20 发布日期:2017-11-29
通讯作者: 丁君(1964-)，女，教授，E-mail: dingjun@nwpu.edu.cn
作者简介:任宇辉(1980-)，男，讲师，西北工业大学博士研究生， E-mail: ryhui13579@163.com．
基金资助:
西安爱生创新发展基金资助项目(ASN-IF2015-0901)

Broadband and high-efficiency reflective polarization rotator using metamaterials

REN Yuhui1,2;DING Jun1;GUO Chenjiang1;XING Tianzhang2;WANG Fuwei2

(1. School of Electronics and Information, Univ. of Northwestern Polytechnical, Xi'an 710129, China;
2. School of Information Science and Technology, Northwest Univ., Xi'an 710069, China)

Received:2017-03-20 Online:2017-10-20 Published:2017-11-29

摘要/Abstract

摘要：

采用六边形金属贴片状超材料结构，设计并制作了一种宽带、反射型极化旋转器．该结构可以在较宽的工作频带内将特定角度入射的线极化波旋转90°，从而使反射波与入射波极化正交．根据各向异性理论解释了极化旋转器的工作原理，分析了该结构的等效电路，仿真了主要参数对其性能的影响．最终通过实际加工、测试证明了: 当电磁波垂直入射时，该结构在841～113GHz的频带内极化转换率大于90％．

关键词: 极化旋转器, 超材料, 各向异性媒质

Abstract:

A wideband and high-efficiency 90°polarization rotator based on ultrathin planar metamaterial is presented. It consists of the metallic hexagonal patches on the top layer of the dielectric substrate and a metallic film on the bottom layer. Initially, the explanation of the physical mechanism for the polarization rotator is presented according to the anisotropy media theory. Thereafter, we have discussed the influences of the structure dimension on the performance of the proposed polarization rotator. And finally, the structure is also fabricated. Results of the test show that it exhibits over 90％ polarization conversion ratio from 841GHz to 113GHz in the condition of normal incidence.

Key words: polarization rotator, metamaterial, anisotropy

任宇辉;丁君;郭陈江;邢天璋;王夫蔚. 一种宽带高效反射型超材料极化旋转器[J]. 西安电子科技大学学报, 2017, 44(5): 171-176.

REN Yuhui;DING Jun;GUO Chenjiang;XING Tianzhang;WANG Fuwei. Broadband and high-efficiency reflective polarization rotator using metamaterials[J]. Journal of Xidian University, 2017, 44(5): 171-176.

参考文献

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一种宽带高效反射型超材料极化旋转器

Broadband and high-efficiency reflective polarization rotator using metamaterials

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