A linear-to-circular polarization converter based on I-shaped circular frequency selective surfaces Project supported by the National Natural Science Foundation of China (Grant Nos. 61471387, 61271250, and 61571460)

In this paper, a linear-to-circular polarization converter using a three-layer frequency selective surface based on I-shaped circular structure resonant is presented and investigated. Numerical simulations exhibit that when the normal y-polarized waves impinge on this device propagating towards +z d...

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Bibliographic Details
Published in:Chinese physics B 2017-08, Vol.26 (9)
Main Authors: Wu, Jia-Liang, Lin, Bao-Qin, Da, Xin-Yu, Wu, Kai
Format: Article
Language:English
Subjects:
frequency selective surface
metasurface
polarization converter
Online Access:Get full text
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Summary:In this paper, a linear-to-circular polarization converter using a three-layer frequency selective surface based on I-shaped circular structure resonant is presented and investigated. Numerical simulations exhibit that when the normal y-polarized waves impinge on this device propagating towards +z direction, the two orthogonal components of the transmitted waves have a 90° phase difference as well as the nearly equal amplitudes at the resonant frequency of 7.04 GHz, which means that the left-hand circular polarization is realized in transmission. For validating the proposed design, a prototype which consists of 25 × 25 elements has been designed, manufactured and measured. The measured results are in good agreement with the simulated ones, showing that the polarization conversion transmission is over −3 dB in the frequency range of 5.22−8.08 GHz and the axial ratio is below 3 dB from 5.86 GHz to 7.34 GHz.
ISSN:1674-1056
DOI:10.1088/1674-1056/26/9/094201