Cantor dielectric resonators for microwave waveguide applicators

Dielectric resonators are structures consisting of a stack of two (or more) different dielectric materials arranged in a certain sequence. The present paper is focused on Cantor dielectric resonators whose construction is determined according to the fractal Cantor scheme. Cantor microwave applicators can be realized by inserting a Cantor resonator in a metallic rectangular waveguide. This applicator can be useful for processing low loss materials due to the field localization occurring in the Cantor resonator. Investigations for different dielectric materials constituting the resonator have been done. Experimental results obtained using a prototype of the Cantor applicator show a good agreement between measured and theoretically calculated field amplitude profiles.