Analysis of fin-line structure containing magnetised ferrite slab smaller than height of waveguide

An analysis has been carried out for a fin-line structure containing a small ferrite slab magnetised parallel to its broad side. The method is based on a mode-matching procedure and leads to an infinite set of homogeneous linear equations which is used for numerical solution. Convergence of the propagation constant is shown by numerical examples. Computed dispersion diagrams are given and compared with those of other authors.