EM-based optimization exploiting partial space mapping and exact sensitivities

John W. Bandler, Achmed S. Mohamed, Mohamed H. Bakr, Kaj Madsen, Jacob Søndergaard

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    We present a family of robust techniques for exploiting sensitivities in electromagnetic (EM)-based circuit optimization through space mapping (SM) technology. We utilize derivative information for parameter extractions and mapping updates. We exploit a partial SM (PSM) concept, where a reduced set of parameters is sufficient for parameter extraction optimization. It reflects the idea of tuning and execution time is reduced. Upfront gradients of both EM (fine) model and coarse surrogates can initialize possible mapping approximations. We introduce several effective approaches for updating the mapping during the optimization iterations. Examples include the classical Rosenbrock function, modified to illustrate the approach, a two-section transmission-line 10:1 impedance transformer and a microstrip bandstop filter with open stubs.
    Original languageEnglish
    JournalI E E E Transactions on Microwave Theory and Techniques
    Volume50
    Issue number12
    Pages (from-to)2741-2750
    ISSN0018-9480
    DOIs
    Publication statusPublished - Dec 2002
    Event IEEE Annual Microwave Theory and Techniques Society International Microwave Symposium (IEEE MTT-S IMS 2002) - Seattle, Washington, United States
    Duration: 2 Jun 20027 Jun 2002

    Conference

    Conference IEEE Annual Microwave Theory and Techniques Society International Microwave Symposium (IEEE MTT-S IMS 2002)
    CountryUnited States
    CitySeattle, Washington
    Period02/06/200207/06/2002

    Keywords

    • CAD
    • design automation
    • electromagnetic (EM) simulation
    • EM optimization
    • microwave filters
    • optimization methods
    • space mapping

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