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Abstract
This work presents a robust methodology for expedited simulation-driven design optimization of compact microwave hybrid couplers. The technique relies on problem decomposition, and a bot-tom–up design strategy, starting from the level of basic building blocks of the coupler, and finishing with a tuning procedure that exploits a fast surrogate model of the entire structure. The latter is constructed by cascading local response surface approximations of coupler elementary elements. The cross-coupling effects within the structure are neglected in the first stage of the design process; however, they are accounted for in the tuning phase by means of space-mapping correction of the surrogate. The proposed approach is demonstrated through the design of a compact rat-race and two branch-line couplers. In all cases, the computational cost of the optimization process is very low and corresponds to just a few high-fidelity electromagnetic simulations of respective structures. Experimental validation is also provided.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
ENGINEERING OPTIMIZATION
no. 48,
edition 7,
pages 1109 - 1120,
ISSN: 0305-215X - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Kurgan P., Kozieł S.: Fast surrogate-assisted simulation-driven design of compact microwave hybrid couplers// ENGINEERING OPTIMIZATION. -Vol. 48, iss. 7 (2016), s.1109-1120
- DOI:
- Digital Object Identifier (open in new tab) 10.1080/0305215x.2015.1097098
- Verified by:
- Gdańsk University of Technology
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