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Design specification management with automated decision-making for reliable optimization of miniaturized microwave components

Design specification management with automated decision-making for reliable optimization of miniaturized microwave components


Title: Design specification management with automated decision-making for reliable optimization of miniaturized microwave components
Author: Koziel, Slawomir   orcid.org/0000-0002-0584-4427
Pietrenko-Dabrowska, Anna
Plotka, Piotr
Date: 2022-01-17
Language: English
Scope: 14
University/Institute: Engineering Optimization & Modeling Center (EOMC)
Department: Department of Engineering
Series: Scientific Reports; 12(1)
ISSN: 2045-2322
DOI: https://doi.org/10.1038/s41598-022-04810-1
Subject: Reiknirit; Ákvarðanataka; Rúmfræði; Örbylgjur; Geislun; Algorithm; Decision making; Geometry; Microwave radiation; Multidisciplinary
URI: https://hdl.handle.net/20.500.11815/3351

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Citation:

Koziel , S , Pietrenko-Dabrowska , A & Plotka , P 2022 , ' Design specification management with automated decision-making for reliable optimization of miniaturized microwave components ' , Scientific Reports , vol. 12 , no. 1 , 829 , pp. 829 . https://doi.org/10.1038/s41598-022-04810-1

Abstract:

The employment of numerical optimization techniques for parameter tuning of microwave components has nowadays become a commonplace. In pursuit of reliability, it is most often carried out at the level of full-wave electromagnetic (EM) simulation models, incurring considerable computational expenses. In the case of miniaturized microstrip circuits, densely arranged layouts with strong cross-coupling effects make EM-driven tuning imperative to achieve the optimum performance. The process is even more challenging due to a typically large number of geometry parameters, and the lack of reasonable initial designs. The latter often encourages the use of global search procedures, which may be prohibitively expensive. In this paper, a novel automated framework for reliable optimization of miniaturized microwave components is proposed. Our methodology is based on design specification management, where the performance requirements imposed on the system are temporarily relaxed if the current design is unlikely to be improved (e.g., due to being away from the target operating frequency). The specifications are re-adjusted at each iteration of the algorithm, and eventually converge to their original values. Using two examples of compact microstrip couplers and a power divider, the presented technique is demonstrated to significantly improve the efficacy of local search routines under challenging design scenarios.

Description:

Funding Information: The authors would like to thank Dassault Systemes, France, for making CST Microwave Studio available. This work is partially supported by the Icelandic Centre for Research (RANNIS) Grant 217771 and National Science Centre of Poland Grant 2020/37/B/ST7/01448. Publisher Copyright: © 2022, The Author(s). © 2022. The Author(s).

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