Robust optimization of microwave structures using cosimulation-based surrogate models

A robust and computationally efficient technique for design optimization of microwave structures is proposed.We exploit cosimulation-based surrogate models with the essential couplings evaluated using electromagnetic (EM) solver and most of the designable parameters modeled by distributed circuit elements with physical dimensions corresponding to those of the structure being optimized. Good prediction capability of the surrogate model is ensured by the space mapping-based alignment process. It is demonstrated that the proposed methodology is able to yield a satisfactory design at the computational cost corresponding to two or three EM simulations of the optimized structure. The design of two microstrip filters is presented for the sake of illustration. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:130–135, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25637

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