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Rapid multi-objective design optimisation of compact microwave couplers by means of physics-based surrogates
Abstract
The authors introduce a methodology for fast multi-objective design optimisation of miniaturised microwave couplers. The approach exploits the surrogate-based optimisation paradigm with an underlying low-fidelity model constructed from an equivalent circuit of the structure under consideration, corrected through implicit and frequency space mapping. A fast prediction tool obtained this way is subsequently optimised by a multi-objective evolutionary algorithm to identify an initial approximation of the Pareto front, that is, a set of designs representing the best possible trade-offs between conflicting objectives. The correction/optimisation of the surrogate is then iterated by design space confinement and segmentation based on a Pareto set representation obtained thus far in the process. This aims at improving the surrogate model accuracy in the vicinity of the Pareto-optimal solutions. The technique is demonstrated by two design examples of compact rat-race couplers. Experimental validation is also provided.
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Authors (4)
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Slawomir Koziel
- Rejkiavik University School of Science and Engineering
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Adrian Bekasiewicz
- Rejkiavik University School of Science and Engineering
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John W. Bandler
- McMaster University
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1049/iet-map.2015.0279
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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IET Microwaves Antennas & Propagation
no. 10,
pages 479 - 486,
ISSN: 1751-8725 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Koziel S., Bekasiewicz A., Kurgan P., Bandler J.: Rapid multi-objective design optimisation of compact microwave couplers by means of physics-based surrogates// IET Microwaves Antennas & Propagation. -Vol. 10, nr. 5 (2016), s.479-486
- DOI:
- Digital Object Identifier (open in new tab) 10.1049/iet-map.2015.0279
- Verified by:
- Gdańsk University of Technology
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