中国物理B ›› 2014, Vol. 23 ›› Issue (11): 118101-118101.doi: 10.1088/1674-1056/23/11/118101

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

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

施宏宇a, 李建星a, 张安学a, 王甲富b, 徐卓c   

  1. a School of Electronic and Information Engineering, Xi'an Jiaotong 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
  • 收稿日期:2014-04-22 修回日期:2014-05-14 出版日期:2014-11-15 发布日期:2014-11-15
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331005, 61001039, and 41390454).

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

Shi Hong-Yu (施宏宇)a, Li Jian-Xing (李建星)a, Zhang An-Xue (张安学)a, Wang Jia-Fu (王甲富)b, Xu Zhuo (徐卓)c   

  1. a School of Electronic and Information Engineering, Xi'an Jiaotong 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
  • Received:2014-04-22 Revised:2014-05-14 Online:2014-11-15 Published:2014-11-15
  • Contact: Zhang An-Xue E-mail:anxuezhang@mail.xjtu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331005, 61001039, and 41390454).

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摘要：

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.

关键词: multi-band, polarization angle independent, optical activity, chiral metamaterials

Abstract:

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.

Key words: multi-band, polarization angle independent, optical activity, chiral metamaterials

中图分类号:  (Metamaterials for chiral, bianisotropic and other complex media)

  • 81.05.Xj
41.20.Jb (Electromagnetic wave propagation; radiowave propagation)