▎ 摘　　要

This paper discusses an analytical formulation for extracting electrical parameters of the Graphene Nano-Ribbon cylindrical Transmission Line (TL), and compares the results with numerical ones obtained through analysis of the same structure using the TLM method in the mm-wave frequency range. To assess the validity of this model, our proposed numerical approach and the simulated models have been compared, and a good agreement has been obtained in this comparison.