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Partial element equivalent circuit modeling of distributed and lumped time-varying dielectric phenomena

Year: 2025
Type: article
Abstract: Time-varying (TV) materials have recently gained considerable attention for their ability to manipulate electromagnetic (EM) waves and improve the performance beyond the limits of conventional time-invariant materials. In addition, distributed TV capacitors are becoming more attractive to achieve particular effects. This work presents a systematic approach to modeling TV dielectrics by incorporating TV capacitors in the framework of the partial element equivalent circuit (PEEC) method. Thus, the standard formulation of the PEEC method is modified to include TV dielectrics and lumped elements for general 3D geometries directly in the time domain (TD). It is shown that this is possible through TV capacitances and voltage-controlled current sources. Four numerical examples validate the proposed approach.
DOI: 10.1038/s41598-025-27863-4
Authors: Daniele Romano, Giuseppe Pettanice, Martin Stumpf, Ioan E. Lager, Jonas Ekman, Ondrej Franek, Roberto Valentini, Piergiuseppe Di Marco, Fortunato Santucci, Giulio Antonini
Institutions: University of L'Aquila, Centre National de la Recherche Scientifique, Université Paris-Saclay, Laboratoire des signaux et systèmes, CentraleSupélec, Brno University of Technology, Delft University of Technology, Luleå University of Technology, Aalborg University
Language: English
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W4416790965
FWCI: 0.453
Cites: 61
Cited by: 2
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