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Expedited design optimization of compact microwave structures using adjoint sensitivities and space mapping (SM) is proposed. For the sake of computational efficiency and good generalization capability, we utilize coarse-discretization electromagnetic (EM) simulation models which are suitably corrected using SM. The mapping parameters are evolving together with the design itself (no fully converged...
In this paper, we present a methodology for expedited hierarchical simulation-driven design of miniaturized multi-section branch-line couplers (BLCs). The design process starts from optimization of elementary cells of a slow-wave structure, followed by a fast tuning of their cascade as well as the tuning of the entire coupler. The last two stages exploit surrogate-assisted optimization with the underlying...
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