The Graphene Base Transistor (GBT) has been recently proposed to possibly overcome the THz limit for RF circuits. We developed a modelling framework to explore the GBT design space, the device optimization and the prediction of its RF performance. Via a proper scaling of the EBI and BCI thicknesses, the THz operation is achievable both in terms of fT and fmax. In this latter case, a very low RCONT value is required, thus it is necessary to improve the metal-graphene interface beyond state of the art graphene technology.
