Metasurface-based broadband linear polarization converter with broad angular stability for X-band applications

An efficient broadband metasurface-based polarization converter is investigated in this communication. The proposed embodiment works in the reflection mode. It can efficiently convert the x -polarized fields to their y -polarized counterpart and vice versa, with a good oblique incidence of up to 50° over the entire X-band. The design portrays a good polarization conversion ratio of up to 98% for normal incidence and is more than 70% considering the cases of oblique incidences. A prototype is fabricated to confirm the operation of the proposed design. Good agreement between the simulation and experimental results is observed. R yy (co-component: y -polarized transmission and y -polarized reception) is below -10 dB, and the R xy (cross-component: y -polarized transmission and x -polarized reception) is above – 3 dB over the entire X-band.