A Time-Domain Method of Auxiliary Sources for Analyzing Transient Electromagnetic Interactions with GSTC-Modeled Metasurfacess

TL;DR

This paper introduces a time-domain method combining Auxiliary Sources and GSTC to analyze transient electromagnetic interactions with 2D metasurfaces, enabling causal and convolution-based modeling.

Contribution

The novel approach transforms frequency-domain GSTC impedance into a causal time-domain convolution within the MAS framework for metasurface analysis.

Findings

Successfully models transient EM response of 2D metasurfaces in time domain

Integrates GSTC into MAS with causal convolution representation

Enables accurate simulation of transient electromagnetic interactions

Abstract

This paper presents a time domain (TD) formulation for modeling the transient electromagnetic response of two-dimensional (2D) metasurfaces using the Method of Auxiliary Sources (MAS) combined with the Generalized Sheet Transition Condition (GSTC). In the proposed approach, the frequency-domain impedance type GSTC is transformed into a causal, convolution-based TD representation and integrated within the MAS formulation. rfaces.