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

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 a...

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Bibliographic Details
Published inJournal of applied physics Vol. 117; no. 4
Main Authors Li, Yongfeng, Zhang, Jieqiu, Qu, Shaobo, Wang, Jiafu, Zheng, Lin, Pang, Yongqiang, Xu, Zhuo, Zhang, Anxue
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 28.01.2015
Subjects
Applied physics
Broadband
Circular polarization
Conversion
Hardware reviews
Linear polarization
Metasurfaces
Ultrawideband
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Summary: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.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4906220