Partial element equivalent circuit modeling of distributed and lumped time-varying dielectric phenomena
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.
Authors
- Giulio Antonini (ORCID: https://orcid.org/0000-0001-5433-6173)
- Martin Štumpf (ORCID: https://orcid.org/0000-0002-7477-7694)
- Roberto Valentini (ORCID: https://orcid.org/0000-0002-0495-2311)
- Piergiuseppe Di Marco (ORCID: https://orcid.org/0000-0002-3528-8513)
- Jonas Ekman (ORCID: https://orcid.org/0000-0003-4160-214X)
- Daniele Romano (ORCID: https://orcid.org/0000-0001-5267-7740)
- Giuseppe Pettanice (ORCID: https://orcid.org/0000-0002-9469-4802)
- Ondřej Franěk (ORCID: https://orcid.org/0000-0003-4928-2208)
- Fortunato Santucci (ORCID: https://orcid.org/0000-0002-0229-6277)
- Ioan E. Lager (ORCID: https://orcid.org/0000-0002-9138-637X)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Luleå University of Technology (SE)
- University of L'Aquila (IT)
- Université Paris-Saclay (FR)
- CentraleSupélec (FR)
- Brno University of Technology (CZ)
- Aalborg University (DK)
- Delft University of Technology (NL)
Publication Details
- Journal
- Scientific Reports
- Published
- 2025-11-28
- DOI
- https://doi.org/10.1038/s41598-025-27863-4
- Primary Topic
- Electromagnetic Simulation and Numerical Methods
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Grantová Agentura České Republiky
- Università degli Studi dell'Aquila