GITz: Graphene-assisted IRS Design for THz Communication

TL;DR

This paper introduces a novel design model for graphene-assisted intelligent reflecting surfaces in THz communication, providing a closed-form expression for reflection amplitude that enhances system performance.

Contribution

It proposes a GITz design model using material-specific parameters of graphene to accurately control reflection amplitude in THz communication systems.

Findings

Closed-form expression for reflection amplitude derived

Simulation confirms improved GIRS characterization

Provides insights into graphene-based THz propagation

Abstract

Graphene-based intelligent reflecting surface (GIRS) has been proved to provide a promising propagation environment to enhance the quality of high frequency terahertz (THz) wireless communication. In this paper, we characterize GIRS for THz communication (GITz) using material specific parameters of graphene to tune the reflection of the incident wave at IRS. In particular, we propose a GITz design model considering the incident signal frequency material level parameters like conductivity, Fermi-level, patch width to control the reflection amplitude (RA) at the communication receiver. We have obtained the closed-form expression of RA for an accurate design and characterization of GIRS, which is incomplete in the existing research due to the inclusion of only phase-shift. The numerical simulation results demonstrate the effectiveness of the proposed characterization by providing key insights.