Recent Advance in Adjoint EM Sensitivity Analysis for Fast Frequency Sweep

Abstract

This paper reviews the recent advance in adjoint electromagnetic (EM) sensitivity analysis for fast frequency sweep. The existing adjoint EM sensitivity analysis methods have to solve large systems of EM equations repetitively for the entire frequency band. We propose a new adjoint EM sensitivity analysis algorithm for the fast frequency sweep using the matrix Padé via Lanczos (MPVL) technique based on the finite-element method (FEM) to addresses this situation. A large EM matrix is only solved at a single frequency to predict the sensitivity information for all frequencies. The adjoint EM sensitivity analysis using the MPVL technique can obtain the same accuracy as the existing techniques while taking less time.