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Low-fidelity model considerations for simulation-based optimisation of miniaturised wideband antennas
Abstract
Here, variable-fidelity electromagnetic (EM)-based design optimisation of miniaturised antennas is discussed. The authors focus on an appropriate selection of discretisation density of the low-fidelity EM model, which results in good performance of the optimisation algorithm in terms of its computational complexity and reliability. Trust-region gradient search with low-fidelity model corrected by means of non-linear frequency scaling and multiplicative output space mapping is utilised as a benchmark optimiser. Comprehensive studies are conducted for several structures of planar wideband antennas, optimised for best matching and minimum size. The results indicate that appropriate low-fidelity model set-up can be determined by means of a correlation analysis based on selected characteristic points of the antenna responses and sparsely allocated test designs.
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Authors (3)
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Sigmar Unnsteinsson
- Reykjavik University School of Science and Engineering
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
IET Microwaves Antennas & Propagation
no. 12,
edition 10,
pages 1613 - 1619,
ISSN: 1751-8725 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Kozieł S., Unnsteinsson S., Bekasiewicz A.: Low-fidelity model considerations for simulation-based optimisation of miniaturised wideband antennas// IET Microwaves Antennas & Propagation. -Vol. 12, iss. 10 (2018), s.1613-1619
- DOI:
- Digital Object Identifier (open in new tab) 10.1049/iet-map.2018.0126
- Verified by:
- Gdańsk University of Technology
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