The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.202108473.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.

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