Design optimization of microwave structures using low-order local Cauchy-approximation surrogates

A robust and computationally efficient microwave design optimization procedure is presented. This procedure integrates low-order Cauchy-approximation surrogate models with coarse-discretization EM simulations. The optimization engine is space mapping (SM). Instead of setting up a single surrogate model valid for the entire design variable space, a sequence of surrogate models is established in small hyper-cubes containing the optimization path. …