Graphene: Status and prospects as a microwave material

Graphene offers new opportunities for the optimization of high frequency FETs by virtue of high carrier velocity, excellent scaling properties, configurability as electron or hole channel devices, and limited scattering. It also offers unique features such as quadratic variation of current with gate voltage, and problems, such as limitations in voltage and poor pinchoff characteristics. This paper reviews graphene material properties, and status and prospects of research efforts to demonstrate graphene-based microwave and mm-wave transistors.