Microwave signal transmission over a planar structure containing a meander microstrip line and doped yttrium iron garnet film

Microwave signal transmission over a planar structure containing a meander microstrip transmission line and doped yttrium iron garnet (YIG) film placed in an external magnetic field is studied. Amplitude-versus- frequency and phase-versus-frequency response curves are obtained at various field orientations and intensities. It is demonstrated that, due to various magnetostatic waves excited in the ferrite film, the amplitude-versus- frequency response of the structure exhibits a rejection band. The planar structure can be used to create tunable MW rejecter filters.