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Authors: Slawomir Koziel ; Stanislav Ogurtsov and Leifur Leifsson

Affiliation: Reykjavik University, Iceland

Keyword(s): Computer-aided Design (CAD), Simulation-driven Design, Antenna Design, Electromagnetic Simulation, Surrogate Modelling.

Abstract: Electromagnetic (EM) simulation has become an important tool in the design of contemporary antenna structures. However, accurate simulations of realistic antenna models are expensive and therefore design automation by employing EM solver within an optimization loop may be prohibitive because of its high computational cost. Efficient EM-driven antenna design can be performed using surrogate-based optimization (SBO). A generic approach to construct surrogate models of antennas involves the use of coarse-discretization EM simulations (low-fidelity models). A proper selection of the surrogate model fidelity is a key factor that influences both the performance of the design optimization process and its computational cost. Despite its importance, this issue has not yet been investigated in the literature. Here, we focus on a problem of proper surrogate model management. More specifically, we carry out a numerical study that aims at finding a trade-off between the design cost and reliabilit y of the SBO algorithms. Our considerations are illustrated using several antenna design cases. Furthermore, we demonstrate that the use of multiple models of different fidelity may be beneficial to reduce the design cost while maintaining the robustness of the optimization process. (More)

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Paper citation in several formats:
Koziel, S.; Ogurtsov, S. and Leifsson, L. (2012). Managing Model Fidelity for Efficient Optimization of Antennas using Variable-resolution Electromagnetic Simulations. In Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM; ISBN 978-989-8565-20-4; ISSN 2184-2841, SciTePress, pages 457-465. DOI: 10.5220/0004147404570465

@conference{sddom12,
author={Slawomir Koziel. and Stanislav Ogurtsov. and Leifur Leifsson.},
title={Managing Model Fidelity for Efficient Optimization of Antennas using Variable-resolution Electromagnetic Simulations},
booktitle={Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM},
year={2012},
pages={457-465},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004147404570465},
isbn={978-989-8565-20-4},
issn={2184-2841},
}

TY - CONF

JO - Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM
TI - Managing Model Fidelity for Efficient Optimization of Antennas using Variable-resolution Electromagnetic Simulations
SN - 978-989-8565-20-4
IS - 2184-2841
AU - Koziel, S.
AU - Ogurtsov, S.
AU - Leifsson, L.
PY - 2012
SP - 457
EP - 465
DO - 10.5220/0004147404570465
PB - SciTePress

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