Realization of high-efficiency anomalous reflection using phase gradient metasurface at UHF

Abstract

In this paper, a phase-gradient metasurface which consists of 7 arcuate cross-shaped metal-medium-metal units with different geometries is designed to realize anomalous reflection at 3GHz with 99% reflection efficiency of both x-polarized and y-polarized waves. The simulation results on near electric field distributions show excellent agreement of the anomalous reflection angle with theoretical analysis. This metasurface can be easily scaled to other frequency bands and find potential applications in optical communications.