Modes in dielectric or ferrite gyrotropic slab and circular waveguides, longitudinally magnetized, with open and completely or partially filled wall

摘要

A unitary analytical approach making use of duality properties of Maxwell’s equations is developed for determining the propagation modes in slab and circular waveguides that comprise a gyrotropic material of dielectric or ferrite type, at which either the permittivity or the permeability tensor is altered by a longitudinally applied quasistatic magnetic field. Both types of electric and magnetic walls are considered. Closed form dimensionless relations are obtained for completely or partially filled and open-wall configurations, with the limit case of unmagnetized gyrotropic material being included. Examples are given for both the slab and the circular gyrotropic waveguides at arbitrary values of material parameters.