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

作　　者：施宏宇 李建星 张安学 王甲富 徐卓 

机构地区：[1]School of Electronic and Information Engineering, Xi’an Jiaotong University [2]College of Science, Air Force Engineering University [3]Electronic Materials Research Laboratory, Xi’an Jiaotong University

出　　处：《Chinese Physics B》2014年第11期572-578,共7页中国物理B（英文版）

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

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.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 

分 类 号：TN624[电子电信—电路与系统]