Effect of the material and geometry parameters on the differential phase shift in the circular waveguide, containing a ferrite cylinder with azimuthal magnetization and a dielectric toroid

The influence of the material and geometry parameters on the differential phase shift, afforded by the circular waveguide with an azimuthally magnetized co-axial ferrite cylinder and a dielectric toroid, is studied for normal TE₀₁ mode, provided the relative permittivity of the isotropic layer is larger than that of the anisotropic one. An iterative technique is used, employing the positive purely imaginary roots of the characteristic equation of the structure, derived by complex Kummer and real cylindrical functions, determined, varying the imaginary part of the complex first parameter of the Kummer ones. The outcomes are presented in normalized form tabularly and graphically and are debated. It is established that for certain values of the parameters of guiding line the phase shift increases, compared to the case in which the permittivities of both media are equal, considered earlier. Simultaneously, the area in which it might be produced, narrows.