▎ 摘　　要

For the development of terahertz (THz) wireless communication systems, the antenna needs to be in micrometer size range and give high far-field gain. Graphene is highly conductive, thermally and electrically; this article puts forward a transparent graphene-based patch antenna with metal lobbing, it resonates nearly at 1 THz and has gain nearly 5 dB. It investigates the effect of chemical potential of graphene on the return loss and resonant frequency of the antenna, this would represent the most effective way to tune radiation characteristics by tuning graphene surface impedance. The performance of designed graphene antenna is compared with its metallic counterpart as a reference antenna, the former outperforms the latter in terms of spectral characteristics. Besides that, metallic thin films are prone to fail because of microcracks which give a compelling reason to switch to graphene antenna for future communication in the THz domain.