Neuro-Tf Modeling of Fourth-order Waveguide Filter Using Padé via Lanczos and EM Sensitivities

The neuro-transfer function (neuro-TF) modeling method has a wide range of applications in the field of electromagnetic (EM) parametric modeling. Matrix Padé via Lanczos (MPVL) technique is executed repeatedly to generate training data. To solve the issue of poles-mismatch, a novel pole-/zero-matching algorithm using EM sensitivities has been proposed. The feasibility of the neuro-TF modeling method is proved by an example of a fourth-order waveguide filter.