Achieving wide-band linear-to-circular polarization conversion using ultra-thin bi-layered metasurfaces

被引：168
作者：
Li, Yongfeng [1 ]
Zhang, Jieqiu [1 ]
Qu, Shaobo [1 ]
Wang, Jiafu [1 ]
Zheng, Lin [1 ]
Pang, Yongqiang [1 ]
Xu, Zhuo [2 ]
Zhang, Anxue [3 ]
机构：
[1] Air Force Engn Univ, Coll Sci, Xian 710051, Peoples R China
[2] Xi An Jiao Tong Univ, Key Lab, Elect Mat Res Lab, Minist Educ, Xian 710049, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 04期
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
PHASE DISCONTINUITIES;
D O I：
10.1063/1.4906220
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, we propose to achieve wideband linear-to-circular (LTC) polarization conversion by ultra-thin bi-layered metasurfaces. As an example, an LTC polarization conversion metasurface operating in 11.4-14.3 GHz is designed and fabricated, which is composed of two layers of metallic pattern arrays separated by a 1.5 mm-thick dielectric spacer. When linearly polarized waves impinge on the bi-layered metasurface, LTC polarization conversion transmission is greater than 90% over a wide frequency range from 11.0 GHz to 18.3 GHz. Meanwhile, the axis ratio is lower than 3 dB in 9.8-18.3 GHz. This wide-band and highly efficient LTC polarization conversion transmission is analyzed theoretically. The measured LTC polarization conversion transmissions are well consistent with the simulated results. (C) 2015 AIP Publishing LLC.
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页数：7
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