# Electromagnetic Aspects of Practical Approaches to Realization of Intelligent Metasurfaces

## TL;DR

This paper investigates the electromagnetic behavior of two practical intelligent metasurface designs, one for GHz frequencies and another for THz, focusing on their applications in tunable perfect absorption.

## Contribution

It compares two different metasurface designs for GHz and THz frequencies, providing practical insights into their electromagnetic responses and applications.

## Key findings

- Switch-fabric design achieves tunable perfect absorption at GHz frequencies.
- Graphene-based metasurface demonstrates effective absorption in the THz band.
- Practical design considerations are discussed for real-world implementation.

## Abstract

We thoroughly investigate the electromagnetic response of intelligent functional metasurfaces. We study two distinct designs operating at different frequency regimes, namely, a switch-fabric-based design for GHz frequencies and a graphene-based approach for THz band, and discuss the respective practical design considerations. The performance for tunable perfect absorption applications is assessed in both cases.