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Efficient Multi-Fidelity Design Optimization of Microwave Filters Using Adjoint Sensitivity

Abstrakt

A simple and robust algorithm for computationally efficient design optimiza-tion of microwave filters is presented. Our approach exploits a trust-region (TR)-based algorithm that utilizes linear approximation of the filter response obtained using adjoint sensitivity. The algorithm is sequentially executed on a family of electromagnetic (EM)-simulated models of different fidelities, starting from a coarse-discretization one, and ending at the original, high-fidelity filter model to be optimized. Switching between the models is determined using suitably defined convergence criteria. This arrangement allows for sub-stantial cost reduction of the initial stages of the optimization process without compromising the accuracy and resolution of the final design. The performance of our technique is illus-trated through the design of a fifth-order waveguide filter and a coupled iris waveguide fil-ter. We also demonstrate that the multi-fidelity approach allows for considerable computational savings compared to TR-based optimization of the high-fidelity EM model (also utilizing adjoint sensitivity).

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING nr 25, wydanie 2, strony 178 - 183,
ISSN: 1096-4290
Język:
angielski
Rok wydania:
2015
Opis bibliograficzny:
Bekasiewicz A., Kozieł S.: Efficient Multi-Fidelity Design Optimization of Microwave Filters Using Adjoint Sensitivity// INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING. -Vol. 25, iss. 2 (2015), s.178-183
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1002/mmce.20847
Weryfikacja:
Politechnika Gdańska

wyświetlono 24 razy

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