Floquet Mode Circulation using a Coarsely Discretized Dielectric Huygens’ Metasurface

Abstract

This paper reports a ternary dielectric Huygens’ metasurface – a metasurface comprising three elements per period, that performs Floquet mode circulation in k-space. We modeled the metasurface as a three-port network, and through full-wave simulation at 28 GHz, we show that the proposed metasurface performs circulation by transforming the FB modes from mode number (+1, 0, -1) to (0, -1, +1), respectively. The corresponding input and output angles are (+33.8^◦, 0^◦,−33.8^◦) and (0^◦, −33.8^◦,+33.8^◦), respectively.