Accurate modeling of antenna structures by means of domain confinement and pyramidal deep neural networks

S Koziel, N Çalık, P Mahouti… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
The importance of surrogate modeling techniques has been gradually increasing in the
design of antenna structures over the recent years. Perhaps the most important reason is a …

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 …

Recent advances in high frequency modeling by means of domain confinement and nested kriging

S Koziel, A Pietrenko-Dabrowska - IEEE Access, 2020 - ieeexplore.ieee.org
Development of modern high-frequency components and circuits is heavily based on full-
wave electromagnetic (EM) simulation tools. Some phenomena, although important from the …

Antenna modeling using variable-fidelity EM simulations and constrained co-kriging

A Pietrenko-Dabrowska, S Koziel - IEEE Access, 2020 - ieeexplore.ieee.org
Utilization of fast surrogate models has become a viable alternative to direct handling of full-
wave electromagnetic (EM) simulations in EM-driven design. Their purpose is to alleviate …

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 …

Reliable EM-driven size reduction of antenna structures by means of adaptive penalty factors

S Koziel, A Pietrenko-Dabrowska - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Miniaturization has become of paramount importance in the design of modern antenna
systems. In particular, compact size is essential for emerging application areas such as …

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 …

Simulation-driven antenna modeling by means of response features and confined domains of reduced dimensionality

A Pietrenko-Dabrowska, S Koziel - IEEE Access, 2020 - ieeexplore.ieee.org
In recent years, the employment of full-wave electromagnetic (EM) simulation tools has
become imperative in the antenna design mainly for reliability reasons. While the CPU cost …

Accelerated gradient-based optimization of antenna structures using multifidelity simulations and convergence-based model management scheme

S Koziel, A Pietrenko-Dabrowska - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
The importance of numerical optimization has been steadily growing in the design of
contemporary antenna structures. The primary reason is the increasing complexity of …

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 …