Performance comparison of metallic and graphene buckypaper microstrip transmission lines

In this work we present the performance of metallic (copper and aluminum) and graphene buckypaper based microstrip transmission lines and the comparison between these device configurations. The graphene buckypapers were deposited by a simple vacuum filtration method, leading to freestanding paper with 350 Dm thickness and diameter up to 1.2 inches. After deposition and drying, the graphene paper and the metallic bands were strips cut by UV laser. The transmission line strips were fixed over alumina substrates with gold backside metallic ground. The S-parameter of these graphene microstrips allows to know the conductivity behavior of carbon electronics when compared with copper and aluminum transmission lines over a wide band of frequencies (from 0.5 to 10 GHz).