Composite Delay-Informed Rational Kernel for Modeling of Electrically Long Interconnects
This work presents a novel composite Gaussian process (GP) model for representing the complex-valued scattering parameters (S-parameters) of electrically long microwave interconnects as a function of frequency. The proposed model integrates a rational Szegö kernel, which captures the holomorphic structure and Hermitian symmetry of S-parameters, with a delay-informed periodic kernel designed to capture oscillatory behavior induced by wave propagation, thus resulting in improved predictive accuracy.
Authors
- Thijs Ullrick (ORCID: https://orcid.org/0000-0002-9587-6923)
- Domenico Spina (ORCID: https://orcid.org/0000-0003-2379-5259)
- Dries Peumans (ORCID: https://orcid.org/0000-0001-6474-6846)
- Tom Dhaene (ORCID: https://orcid.org/0000-0003-2899-4636)
- Tekalegn Mezemr Yihune (ORCID: https://orcid.org/0009-0007-3487-2359)
Institutions
- Vrije Universiteit Brussel (BE)
- Ghent University (BE)
Publication Details
- Journal
- IEEE Microwave and Wireless Technology Letters
- Published
- 2025-11-14
- DOI
- https://doi.org/10.1109/lmwt.2025.3629238
- Primary Topic
- Lightning and Electromagnetic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Vrije Universiteit Brussel