Analysis of 3D ferrite-loaded waveguide discontinuity problems

In this article, an approach is presented to compute the scattering parameters of the ferrite-loaded waveguide discontinuity using the finite-element method (FEM) and perfectly matched layers (PMLs). The propagation constants of a uniform ferrite-loaded waveguide are first calculated to validate the proposed approach. Then a 2D ferrite-loaded discontinuity problem is computed to further confirm the accuracy of the approach. Finally, several 3D discontinuity results are given to show the efficiency and generality of the approach. (C) 2003 Wiley Periodicals, Inc.