Electromagnetic wave properties in a waveguilde loaded with a thin slad of semiconductor.

We have demonstrated electromagnetic wave properties in a waveguide loaded with a thin slab of semiconductor. A rectangular waveguide loaded with a full height semiconductor slab are used in devices such as el1ectrically variable phase shifters，isolators and filters. The special case of the slab located in center of the waveguide has been investgated by many workers， but are restricted to small values ofσ，sp ecial slab positions and thin slab. This paper discusses perturbation techniques which are useful in determining Hall effect of a bulk semiconductor contained in a waveguide from measurement of the properties of the transmitted wave. The measurements are performed by inserting three kinds of bulk semiconductor slab into a rectungular waveguide