Graphene-Based Microwave Circuits: A Review

Over the past two decades, research on 2D materials has received much
interest. Graphene is the most promising candidate regarding high-frequency
applications thus far due to is high carrier mobility. Here, the research
about the employment of graphene in micro- and millimeter-wave circuits
is reviewed. The review starts with the different methodologies to grow and
transfer graphene, before discussing the way graphene-based field-effecttransistors
(GFETs) and diodes are built. A review on different approaches for
realizing these devices is provided before discussing the employment of both
GFETs and graphene diodes in different micro- and millimeter-wave circuits,
showing the possibilities but also the limitations of this 2D material for highfrequency
applications.