Triangulation-based Constrained Surrogate Modeling of Antennas

Sławomir Kozieł; Ari Sigurdsson

doi:10.1109/tap.2018.2839759

Triangulation-based Constrained Surrogate Modeling of Antennas

Abstrakt

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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Autorzy (2)

Sławomir Kozieł prof. dr inż.
Ari Sigurdsson

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Wersja publikacji: Accepted albo Published Version
Licencja: Copyright (2018 IEEE)

Słowa kluczowe

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

Informacje szczegółowe

Kategoria:: Publikacja w czasopiśmie
Typ:: artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION nr 66, strony 4170 - 4179,
ISSN: 0018-926X
Język:: angielski
Rok wydania:: 2018
Opis bibliograficzny:: 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:: Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/tap.2018.2839759
Weryfikacja:: Politechnika Gdańska