Impacts of dimensions, number of layers and contact structures on the loss of graphene-based coplanar waveguides through simulations

摘要

We present modeling and simulations of graphene coplanar waveguide (GCPW) under the frequency up to 50 GHz. Our simulation results show that the dimensions of GCPW greatly influence its insertion loss. In addition, different graphene layer numbers and structures of graphene-metal contact were also considered. We show that the usage of few-layer graphene and end-contact structure is able to decrease the insertion loss, which helps improve the radio-frequency performance of graphene coplanar waveguide.