Reconfigurable Antenna Design Based on Fresnel Zone Plate

The rapid development of wireless devices now requires antennas to be highly flexible more than ever. In this work, we demonstrate a reconfigurable antenna with beam steering based on Fresnel Zone Plate (FZP). The FZP-based antenna is implemented on a metasurface mounted with microwave PIN diodes. The principle behind reconfiguration is the electrically induced transparency and opacity switched by voltages applied across the diodes, thus adjusting the strip distribution of FZP. Since it can achieve transmitted and reflected beam steering at two different frequencies at the same time, it will expand the functions of traditional phased array antennas, which has a wide application in various scenarios.