A high gain parabolic antenna based on gradient metasurface

This paper presents the design of a high gain parabolic antenna by using reflection gradient metasurface. The metasurface is consisting of a series of asymmetrical square patches on a grounded dielectric substrate. A patch antenna is located at the focal point of the metasurface as a feed source. Due to the effective utilization of metasurface, the electromagnetic wave reflected and concentrated, which resulted in high of the antenna. The antenna has an impedance bandwidth ranging from 12.076 GHz - 13. 152 GHz for S11 <; -10 dB with a high-gain up to 20.5 dB. Thus, the proposed antenna is suitable for long-distance communication systems requiring high-gain.