Sensitivity Analysis of Network Parameters With Electromagnetic Frequency-Domain Simulators
Nikolova, N.K. ; Jiang Zhu ; Dongying Li ; Bakr, M.H. ; Bandler, J.W.
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
A new practical approach to sensitivity analysis of the network parameters of high-frequency structures with commercial full-wave electromagnetic (EM) solvers is proposed. We show that the computation of the linear-network parameter derivatives in the design-parameter space does not require an adjoint-problem solution. The sensitivities are computed outside the EM solver, which simplifies the implementation. We discuss: 1) features of commercial EM solvers which allow the user to compute network parameters and their sensitivities through a single full-wave simulation; 2) the accuracy of the computed derivatives; and 3) the overhead of the sensitivity computation. Through examples based on FEMLAB and FEKO simulations, comparisons are made with the forward finite-difference derivative estimates in terms of accuracy and CPU time.
IEEE Transactions on Microwave Theory and Techniques
2006
February
54
2
670 - 681
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