Analysis of H-slot resonators in microstrip line ground plane

The strict generalized formulation of the transverse resonance technique (TRT) has been developed as a convenient formalization tool for discontinuities of increased complexity in planar and quasi-planar configuration such as stripline and slotline. The idea of analysis technique of similar slotline structures is described in the work of Sorrentino, Itoh (1984) where the field on discontinuity in a slotline is expressed through eigenwaves of a complex cross-section waveguide. Thus the boundary problem for eigenwaves of the waveguide in the area with rectangular coordinate borders can be solved by classical projection method.