Polarization and Frequency Selective Surface-Based Wideband Transmit-Reflect-Array Antenna

In this letter, a polarization-dependent, high-gain, wideband transmit-reflect-array (TRA) antenna is presented. The TRA consists of a polarization and frequency selective surface (PFSS) sandwiched between two 3D-printed phase shifting surfaces (PSSs). The PFSS has been designed to allow <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</i>-polarized waves to transmit and <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://