Distributed Amplifier Based on Monolayer Graphene Field Effect Transistor
Abstract
Due to the ultra-high carrier mobility and ultralow resistivity of Graphene channel, a Graphene field effect transistor (GFET) is an interesting candidate for future RF and microwave electronics. In this paper, the introduction and review of existing compact circuit-level model of GFETs are presented. A compact GFET model based on drift-diffusion transport theory is then implemented in Verilog-A for RF/microwave circuit analysis. Finally, the GFET model is used to design a GFET-based distributed amplifier (DA) using advanced design system (ADS) tools. The simulation results demonstrate a gain of 8dB, an input/output return loss less than −10dB, −3dB bandwidth from DC up to 5GHz and a dissipation of about 60.45mW for a 1.5V power supply. The main performance characteristics of the distributed amplifier are compared with 0.18μm CMOS technology.
This paper was recommended by Regional Editor Piero Malcovati.