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Self-Adjoint Sensitivity Analysis of High-Frequency Structures with FEKO


J. Zhu, N.K. Nikolova, J.W. Bandler

McMaster University, Ontario, Canada

We exploit adjoint sensitivity analysis to extract the gradients of the network parameters in the design parameter space from a Method of Moments (MoM) solution provided by FEKO. We show that an adjoint-problem solution is not needed in the computation of the S-parameter derivatives, which can now be obtained from the full-wave solution with little overhead. We discuss the features of a commercial MoM solver which allow the implementation of our method. We demonstrate this implementation in FEKO through the analysis of a high-temperature superconducting (HTS) bandpass filter. The results are compared with the forward finite-difference derivative estimates.

ACES

2006

March