Wide-band circular polarization-keeping reflection mediated by metasurface

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...

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Bibliographic Details
Published in:Chinese physics B 2015, Vol.24 (1), p.258-264
Main Author: 李勇峰 张介秋 屈绍波 王甲富 郑麟 周航 徐卓 张安学
Format: Article
Language:English
Subjects:
Azimuth
Circularity
Frequency ranges
Reflection
Reflectors
Resonators
Simulation
Wideband
保管
反射器
圆偏振
圆极化波
宽带
斜入射
物理机制
矩阵分析
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Summary: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.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/1/014202