Ultra-wideband circular polarization-maintaining reflection realized by an anisotropic metasurface

Bao-qin Lin, Lintao Lv, Jianxin Guo, Yanwen Wang, Zuliang Wang and Rui Zhu

Journal of Electromagnetic Waves and Applications, 2020, vol. 34, issue 10, 1420-1429

Abstract: In this paper, an ultra-wideband circular polarization (CP) maintaining reflector is proposed based on an anisotropic metasurface, which is an orthogonal anisotropic structure with a pair of symmetrical axes u and v perpendicular to each other. The simulated results show that the reflector can realized CP-maintaining reflection under both right-handed and left-handed CP (RHCP and LHCP) incidences in the frequency band between 8.79 and 27.09 GHz, the fractional bandwidth is up to 102%. In addition, the physical mechanism of the CP-maintaining reflection has been analyzed in detail, and one useful formula has been derived, which can be used to calculate the cross- and co-polarization reflection coefficients under CP incidence according to the phase differences between the two reflection coefficients under u and v-polarized incidences. Finally, one effective experimental validation was carried out.

Date: 2020
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DOI: 10.1080/09205071.2020.1738964

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