Physics-based Modeling and Microwave Characterization of Graphene Co-planar Waveguides
Journal
Physica Status Solidi (RRL) - Rapid Research Letters
Date
2014.04.22
Abstract
In this study, large area single, bi, and multi-layer graphene (MLG) were synthesized using a low pressure chemical vapor deposition (LPCVD) process and co-planar waveguides (CPW) with graphene fabricated using conventional photolithography. The fabricated devices were evaluated by physics-based RLC equivalent circuit simulation. The intrinsic room temperature radio frequency (RF) characteristics were measured via direct contact to the graphene surface with a probe tip in the range of 0.1 GHz to 40 GHz without using metal electrodes. The proposed equivalent circuit model reproduced all of the measured characteristics and we numerically extracted the set of component values which minimize the error between the measured data and the simulation results over the measured regime. Our findings demonstrate that MLG is an effective candidate in RF interconnect device applications.
