Tri-band transparent cross-polarization converters using a chiral metasurface

A chiral metasurface is proposed to realize a tri-band polarization angle insensitive cross-polarization converter. The unit cell of the chiral metamaterial is composed by four twisted anisotropic structure pairs in four-fold rotation symmetry. The simulation results show that this device can work a...

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Bibliographic Details
Published inChinese physics B Vol. 23; no. 11; pp. 572 - 578
Main Author 施宏宇 李建星 张安学 王甲富 徐卓
Format Journal Article
LanguageEnglish
Published 01.11.2014
Subjects
Conversion ratio
Converters
Devices
Electric dipoles
Joining
Polarization
Simulation
Symmetry
Unit cell
三频
交叉极化
千兆赫
各向异性结构
手性
旋转对称
转换器
频率选择性
Online AccessGet full text
ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/23/11/118101

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Summary:A chiral metasurface is proposed to realize a tri-band polarization angle insensitive cross-polarization converter. The unit cell of the chiral metamaterial is composed by four twisted anisotropic structure pairs in four-fold rotation symmetry. The simulation results show that this device can work at 9.824 GHz, 11.39 GHz, and 13.37 GHz with low loss and a high polarization conversion ratio （PCR） of more than 99%. The proposed design can transmit the co-polarization wave at 14.215 GHz, like a frequency selective surface. The study of the current and electric fields distributions indicates that the cross-polarization transmission is due to electric dipole coupling.
Bibliography:Shi Hong-Yu, Li Jian-Xing, Zhang An-Xue Wang Jia-Fu, and Xu Zhuo（ a） School of Electronic and Information Engineering, Xi ＇ an .liaotong University, Xi ＂an 710049, China b） College of Science, Air Force Engineering University, Xi＇an 710051. China C） Electronic Materials Research Laboratory, Xi ＇an Jiaotong University, Xi ＇an 710049, China
multi-band, polarization angle independent, optical activity, chiral metamaterials
11-5639/O4
A chiral metasurface is proposed to realize a tri-band polarization angle insensitive cross-polarization converter. The unit cell of the chiral metamaterial is composed by four twisted anisotropic structure pairs in four-fold rotation symmetry. The simulation results show that this device can work at 9.824 GHz, 11.39 GHz, and 13.37 GHz with low loss and a high polarization conversion ratio （PCR） of more than 99%. The proposed design can transmit the co-polarization wave at 14.215 GHz, like a frequency selective surface. The study of the current and electric fields distributions indicates that the cross-polarization transmission is due to electric dipole coupling.
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/11/118101