Triangulation-based Constrained Surrogate Modeling of Antennas

Sławomir Kozieł; Ari Sigurdsson

doi:10.1109/tap.2018.2839759

Triangulation-based Constrained Surrogate Modeling of Antennas

Abstract

Design of contemporary antenna structures is heavily based on full-wave electromagnetic (EM) simulation tools. They provide accuracy but are CPU-intensive. Reduction of EM-driven design procedure cost can be achieved by using fast replacement models (surrogates). Unfortunately, standard modeling techniques are unable to ensure sufficient predictive power for real-world antenna structures (multiple parameters, wide parameter ranges, highly-nonlinear responses). Here, a design-oriented modeling technique is introduced, in which the most critical part is the domain definition. The surrogate is constructed in the region based on a set of reference designs, optimized with respect to userselected figures of interest such as operating frequencies, bandwidth, substrate permittivity, etc. The domain is spanned by the simplexes, obtained by triangulation of the reference designs, further extended into their orthogonal complements. Restricting the model domain as above permits dramatic reduction of the number of training data samples necessary to build a reliable model, as compared to the conventional approach. The proposed modeling framework is demonstrated using three examples, a UWB monopole, and two dual-band antennas. Comprehensive benchmarking as well as application studies and experimental verification are also provided.

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Authors (2)

Sławomir Kozieł prof. dr inż.
Ari Sigurdsson

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Publication version: Accepted or Published Version
License: Copyright (2018 IEEE)

Keywords

ANTENNA DESIGN, SURROGATE MODELING, APPROXIMATION MODELS, SIMULATION-DRIVEN DESIGN, CONSTRAINED MODELING, TRIANGULATION

Details

Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION no. 66, pages 4170 - 4179,
ISSN: 0018-926X
Language:: English
Publication year:: 2018
Bibliographic description:: Kozieł S., Sigurdsson A.: Triangulation-based Constrained Surrogate Modeling of Antennas// IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. -Vol. 66, iss. 8 (2018), s.4170-4179
DOI:: Digital Object Identifier (open in new tab) 10.1109/tap.2018.2839759
Verified by:: Gdańsk University of Technology