COMPARATIVE ANALYSIS OF SILVER AND GRAPHENE BASED METASURFACE UNIT-CELL STRUCTURE FOR WIDEBAND THz ANTENNA

Abstract

The rapid growth of wireless communication is accelerating like never before. It is propelled by the introduction of the devices that uses 5G and beyond. It is foreseeable that the antennas in THz range, smart antennas and reconfigurable intelligent surfaces (RIS) are going to be vital in the future. A lot of traction is happening in the THz frequency range with the amalgamation of the THz antennas based off of metasurface integrations. In this paper a metasurface based THz antenna is designed using 2 different materials and their performance is evaluated and compared. The unit cell structure is made up of silver and graphene materials and geometries are modified for the patch antenna. The improved performance of graphene over silver is obtained and the results are presented in a novel and comparably comprehensible manner.