Expedited Design Closure of Antennas By Means Of Trust-Region-Based Adaptive Response Scaling

Sławomir Kozieł; Unnsteinsson Sigmar

doi:10.1109/lawp.2018.2834145

Expedited Design Closure of Antennas By Means Of Trust-Region-Based Adaptive Response Scaling

Abstract

In the letter, a reliable procedure for expedited design optimization of antenna structures by means of trust-region adaptive response scaling (TR-ARS) is proposed. The presented approach exploits two-level electromagnetic (EM) simulation models. A predicted high-fidelity model response is obtained by applying nonlinear frequency and amplitude correction to the low-fidelity model. The surrogate created this way is iteratively rebuilt and optimized within the trust region framework. Utilization of the correlations between the EM models of various fidelities allows for significant reduction of the design optimization cost. The operation and performance of the algorithm are demonstrated using a dual-band patch antenna optimized for several scenarios. Comparative study reveals computational benefits of TR-ARS over direct optimization of the high-fidelity EM model. Reliability of the optimization process is further confirmed by experimental validation of the fabricated antenna prototypes.

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Authors (2)

Sławomir Kozieł prof. dr inż.
Unnsteinsson Sigmar
- Reykjavik University School of Science and Engineering

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Publication version: Accepted or Published Version
License: Copyright (2018 IEEE)

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: IEEE Antennas and Wireless Propagation Letters no. 17, pages 1099 - 1103,
ISSN: 1536-1225
Language:: English
Publication year:: 2018
Bibliographic description:: Kozieł S., Sigmar U.: Expedited Design Closure of Antennas By Means Of Trust-Region-Based Adaptive Response Scaling// IEEE Antennas and Wireless Propagation Letters. -Vol. 17, nr. 6 (2018), s.1099-1103
DOI:: Digital Object Identifier (open in new tab) 10.1109/lawp.2018.2834145
Verified by:: Gdańsk University of Technology