Features of the transformation of electromagnetic waves into magnetostatic waves

In certain plane-stratified waveguide systems with transversely magnetized ferrite, a unidirectional magnetostatic wave (MSW) can be 'matched' with an electromagnetic wave on account of the existence of an intermediate MSW with a specific spatial structure, facilitating the transformation of one type of wave into the other. This intermediate wave can be a sector MSW, which effects the efficient transfer of power from the electromagnetic wave to an MSW propagating in a narrow slot between an ideal electric or magnetic wall and the ferrite. These phenomena are illustrated by the transformation of an H(10) wave in a plane-stratified branching waveguide with electric walls.