Wide-band circular polarization-keeping reflection mediated by metasurface  

作　　者：李勇峰 张介秋 屈绍波 王甲富 郑麟 周航 徐卓 张安学 

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

出　　处：《Chinese Physics B》2015年第1期258-264,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grants Nos.61331005,11204378,11274389,11304393,and 61302023);the National Natural Science Foundation of Shaanxi Province,China(Grant Nos.2011JQ8031 and 2013JM6005)

摘　　要：In this paper, we show that circular polarization-keeping reflection can be achieved using reflective metasurfaces. The underlying physical mechanism of the polarization-keeping reflection is analyzed using a reflection matrix. A wideband circular polarization-keeping reflector is demonstrated using N-shaped resonators. Both the simulation and experiment results show that the polarization-keeping reflection can be achieved with a high efficiency larger than 98% over the frequency range from 9.2 GHz to 17.7 GHz for both incident left- and right-handed circularly polarized waves. Under oblique incidence, the bandwidth increases as the incident angle varies from 0°to 80°. Moreover, the co-polarization reflection is independent of the incident azimuth angles.In this paper, we show that circular polarization-keeping reflection can be achieved using reflective metasurfaces. The underlying physical mechanism of the polarization-keeping reflection is analyzed using a reflection matrix. A wideband circular polarization-keeping reflector is demonstrated using N-shaped resonators. Both the simulation and experiment results show that the polarization-keeping reflection can be achieved with a high efficiency larger than 98% over the frequency range from 9.2 GHz to 17.7 GHz for both incident left- and right-handed circularly polarized waves. Under oblique incidence, the bandwidth increases as the incident angle varies from 0°to 80°. Moreover, the co-polarization reflection is independent of the incident azimuth angles.

关 键 词：polarization-keeping reflection left-hand（right-hand） circular polarization reflective metasurface axial ratio 

分 类 号：O436.3[机械工程—光学工程]