Rayas-Sánchez, José E.Chávez-Hurtado, José L.Brito-Brito, Zabdiel2019-08-272019-08-272017-05Rayas‐Sánchez, J. E., Chávez‐Hurtado, J. L., and Brito‐Brito, Z. ( 2017) Optimization of full‐wave EM models by low‐order low‐dimension polynomial surrogate functionals. Int. J. Numer. Model., 30: e2094. doi: 10.1002/jnm.2094.0894-3370http://hdl.handle.net/11117/5985A practical formulation for EM-based design optimization of high-frequency circuits using simple polynomial surrogate functionals is proposed in this paper. Our approach starts from a careful selection of design variables and is based on a closed-form formulation that yields global optimal values for the surrogate model weighting factors, avoiding a large set of expensive EM model data, and resulting in accurate low-order low-dimension polynomials interpolants that are used as vehicles for efficient design optimization. Our formulation is especially suitable for EM-based design problems with no equivalent circuital models available. The proposed technique is illustrated by the EM-based design optimization of a Ka-band substrate integrated waveguide (SIW) interconnect with conductor-backed coplanar waveguide (CBCPW) transitions, a low crosstalk PCB microstrip interconnect structure with guard traces, and a 10-40 GHz SIW interconnect with microstrip transitions on a standard FR4-based substrate. Three commercially available full-wave EM solvers are used in our examples: CST, Sonnet and COMSOL.engSurrogate ModelingPolynomial FunctionalsEM-based Design OptimizationSpace MappingHigh-speed InterconnectsSubstrate Integrated WaveguidesCPW-SIW TransitionsGuard TracesMicrostrip-SIW Transitionsinfo:eu-repo/semantics/article