Space Mapping With Adaptive Response Correction for Microwave Design Optimization

S. Koziel, J.W. Bandler, Kaj Madsen

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    Abstract

    Output space mapping is a technique introduced to enhance the robustness of the space-mapping optimization process in case the space-mapped coarse model cannot provide sufficient matching with the fine model. The technique often works very well; however, in some cases it fails. Especially in the microwave area where the typical model response (e.g., vertical bar S-21 vertical bar) is a highly nonlinear function of the free parameter (e.g., frequency), the output space-mapping correction term may actually increase the mismatch between the surrogate and fine models for points other than the one at which the term was calculated, as in the surrogate model optimization process. In this paper, an adaptive response correction scheme is presented to work in conjunction with space-mapping optimization algorithms. This technique is designed to alleviate the difficulties of the standard output space mapping by adaptive adjustment of the response correction term according to the changes of the space-mapped coarse model response. Examples indicate the robustness of our approach.
    Original languageEnglish
    JournalIEEE Transactions on Microwave Theory and Techniques
    Volume57
    Issue number2
    Pages (from-to)478-486
    ISSN0018-9480
    DOIs
    Publication statusPublished - 2009

    Bibliographical note

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    Keywords

    • response correction
    • microwave design
    • Engineering optimization
    • space-mapping optimization
    • space mapping

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