FDTD Full Wave Simulations of Reconfigurable Intelligent Surfaces

TL;DR

This paper uses FDTD simulations to analyze reconfigurable intelligent surfaces modeled with metallic patches and varactor diodes, focusing on their response to random plane wave sources.

Contribution

It introduces a numerical simulation approach for analyzing the electromagnetic response of reconfigurable metasurfaces with complex, random incident fields.

Findings

Demonstrates the effectiveness of FDTD in modeling reconfigurable metasurfaces.

Provides insights into the response variability of metasurfaces under random wave illumination.

Validates the modeling approach with simulated electromagnetic responses.

Abstract

This paper presents the analysis of metasurfaces, here called reconfigurable intelligent surface. The analysis is performed by numerical simulations that implement the finite-difference time-domain method. The metasurface has been modeled by metallic patches interconnected by varactor diodes. The electromagnetic source consists of randomly generated plane wave. This kind of analysis allows us to investigate the response of the metasurface when it is hit by a random source.