A new computational speed-up based criterion for accelerating the WCAWE MORe technique

Fast frequency sweep using Model Order Reduction (MORe) techniques is one of the most important features in modern FEM-based simulation software. In fact MORe techniques, and the Well-Conditioned Asymptotic Waveform Evaluation (WCAWE) technique in particular, reduce considerably the simulation time by providing accurate S-parameter approximations over wide frequency ranges with only one complete LU solution. However, many challenges related to the WCAWE automation remain. In this paper a new approach for the calculation of the reduced order model is presented. The new approach is based on the estimation of the speed up that can be provided by the WCAWE technique in comparison to the regular discrete sweep as a function of the reduced model size.