Ultrathin high-efficiency X-band reflective polarization converter using sunken double arrowhead metasurface

Abstract

In this paper, an ultrathin and high efficiency linear reflective polarization converter is proposed for X-band using dual resonant metasurface. It offers 42% (8 GHz–12.2 GHz) fractional bandwidth with over 80% polarization conversion efficiency, while it is only λ/18.75 thick at the mid operating frequency. The polarization converter is insensitive to variation of incident angle for both the TE and TM polarized waves. Furthermore, exact expressions are given to calculate co- and cross-polarized reflections using decomposed u- and v-polarized incidence method of analysis. The measurement results show good agreement with numerically simulated and theoretically calculated results.