Broad-band and broad-angle linear and circular polarization converting metasurface

Abstract

This paper presents a broad-band and broad-angle anisotropic reflective polarization converting metasurface (PCMS) for C- and X-band applications, which is composed of square split ring resonators. Such PCMS can be used in a wide range of applications such as satellite antennas, navigation systems, and biomedical devices, to name but a few. The performance of the presented PCMS is analyzed theoretically, numerically, and experimentally. The results at normal and oblique incidences demonstrate that the PCMS achieves broad-band linear polarization (LP) transformation within an operating bandwidth of 5.3 GHz (5.3–10.6 GHz), covering the C-band and a portion of the X-band. The broad-band performance of the PCMS sustains from $0^{\circ }$ to ${60}^{\circ }$. Moreover, the PCMS achieves polarization conversion for circularly polarized (CP) waves in the same bands. The polarization conversion ratio is more than $90\mathrm{\%}$ for both LP and CP incident waves.

Keywords:

• Broad-band
• broad-angle
• metasurface
• linear polarization
• circular polarization
• polarization conversion ratio

Disclosure statement

No potential conflict of interest was reported by the author(s).