Low-cost modeling of microwave components by means of two-stage inverse/forward surrogates and domain confinement

S Koziel, A Pietrenko-Dabrowska… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Full-wave electromagnetic (EM) analysis is one of the most important tools in the design of
modern microwave components and systems. EM simulation permits reliable evaluation of …

Reliable computationally efficient behavioral modeling of microwave passives using deep learning surrogates in confined domains

S Koziel, N Çalık, P Mahouti… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The importance of surrogate modeling techniques has been steadily growing over the recent
years in high-frequency electronics, including microwave engineering. Fast metamodels are …

Improved modeling of microwave structures using performance-driven fully-connected regression surrogate

S Koziel, P Mahouti, N Calik, MA Belen… - Ieee …, 2021 - ieeexplore.ieee.org
Fast replacement models (or surrogates) have been widely applied in the recent years to
accelerate simulation-driven design procedures in microwave engineering. The …

Expedited variable-resolution surrogate modeling of miniaturized microwave passives in confined domains

S Koziel, A Pietrenko-Dabrowska - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The design of miniaturized microwave components is largely based on computational
models, primarily, full-wave electromagnetic (EM) simulations. The EM analysis is capable of …

Improved efficacy behavioral modeling of microwave circuits through dimensionality reduction and fast global sensitivity analysis

S Koziel, A Pietrenko-Dabrowska, L Leifsson - Scientific Reports, 2024 - nature.com
Behavioral models have garnered significant interest in the realm of high-frequency
electronics. Their primary function is to substitute costly computational tools, notably …

Reduced-cost surrogate modelling of compact microwave components by two-level kriging interpolation

S Koziel, A Pietrenko-Dabrowska - Engineering Optimization, 2020 - Taylor & Francis
Full-wave electromagnetic (EM) analysis is a versatile tool for evaluating the performance of
high-frequency components. Its potential drawback is its high computational cost, inhibiting …

Surrogate modeling of impedance matching transformers by means of variable‐fidelity electromagnetic simulations and nested cokriging

A Pietrenko‐Dabrowska, S Koziel - International Journal of RF …, 2020 - Wiley Online Library
Accurate performance evaluation of microwave components can be carried out using full‐
wave electromagnetic (EM) simulation tools, routinely employed for circuit verification but …

Low-cost quasi-global optimization of expensive electromagnetic simulation models by inverse surrogates and response features

S Koziel, A Pietrenko-Dabrowska - Scientific Reports, 2022 - nature.com
Conceptual design of contemporary high-frequency structures is typically followed by a
careful tuning of their parameters, predominantly the geometry ones. The process aims at …

Design-oriented two-stage surrogate modeling of miniaturized microstrip circuits with dimensionality reduction

S Koziel, A Pietrenko-Dabrowska - IEEE Access, 2020 - ieeexplore.ieee.org
Contemporary microwave design heavily relies on full-wave electromagnetic (EM)
simulation tools. This is especially the case for miniaturized devices where EM cross …

Improved-efficacy optimization of compact microwave passives by means of frequency-related regularization

S Koziel, A Pietrenko-Dabrowska, M Al-Hasan - IEEE Access, 2020 - ieeexplore.ieee.org
Electromagnetic (EM)-driven optimization is an important part of microwave design,
especially for miniaturized components where the cross-coupling effects in tightly arranged …