Novel behaviours of guided and leaky waves in microwave ferrite devices

This work analyses original electromagnetic properties of a class of non-reciprocal components for new interesting applications in microwave and millimetre-wave passive devices and antennas. Our attention is here focused on the modal properties of basic waveguiding structures employing ferrite materials, such as the grounded slab or the non-radiative dielectric guide. The relevant full-wave spectrum of real and complex modal solutions is rigorously derived. As a result, a number of quite unusual propagation behaviours are emphasised as a function of the physical and geometrical parameters involved. Anomalous phenomena are illustrated for the dispersion curves of both proper and improper waves. Such solutions have to be deeply investigated for their physical nature and practical implications