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PIER PIER B PIER C PIER M PIER Letters
2021-12-31
Recent Advances in Transfer Function-Based Surrogate Optimization for EM Design (Invited)
By
Wei Liu,

    Dr. Wei Liu

    Tianjin University

    China

    Homepage

Feng Feng,

    Dr. Feng Feng

    School of Microelectronics

    Tianjin University

    China

    Homepage

Qijun Zhang

    Professor Qijun Zhang

    Department of Electronics

    Carleton University

    Canada

    Homepage

Progress In Electromagnetics Research, Vol. 172, 61-75, 2021
doi:10.2528/PIER21110302 | Google Scholar

Abstract
This airticle provides a review of transfer function-based (TF-based) surrogate optimization for electromagnetic (EM) design. Transfer functions (TF) represent the EM responses of passive microwave components versus frequency. With the assistance of TF, the nonlinearity of the model structure can be decreased. Parallel gradient-based EM optimization technique using TF in rational format and trust region algorithm is introduced first. Following that, we review the EM optimization using adjoint sensitivity-based neuro-TF surrogate, where the neuro-TF modeling method is in pole/residue format. The adjoint sensitivity-based neuro-TF surrogate technique can reach the optimal EM responses solution faster than the existing gradient-based surrogate optimization methods without sensitivity information. As a further advancement, we discuss the multifeature-assisted neuro-TF surrogate optimization technique. With the help of multiple feature parameters, the multifeature-assisted neuro-TF surrogate optimization has a better ability of avoiding local minima and can achive the optimal EM solution faster than the surrogate optimizations without feature assistance. Three examples are used to verify the above three methods.
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Citation
Wei Liu, Feng Feng, and Qijun Zhang, "Recent Advances in Transfer Function-Based Surrogate Optimization for EM Design (Invited)," Progress In Electromagnetics Research, Vol. 172, 61-75, 2021.
doi:10.2528/PIER21110302
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