A Fabry-Perot Resonator Antenna based on Graphene Patch Array

In order to achieve a high directivity antenna for terahertz, an improved Fabry-Perot resonator antenna based on graphene is proposed. The antenna consists of a graphene patch array on a grounded dielectric and a rectangle waveguide. According to the theory of Fabry-Perot resonant cavity, the directivity of antenna will increase obviously by choosing proper chemical potential of graphene and appropriate distance of resonant cavity. The radiation pattern of antenna also changes with the chemical potential.