Millimeter waves propagation on the curved dielectric interface with high loss media

Abstract

The common feature of considered structures is as follows. At great values of imaginary CP part of high loss medium we have rather small attenuation for the waveguide structure (the rod) or high Q-factor for the resonator structure (the ball). The phase velocity of the waves for all these structures is a bit more the light velocity in the dielectric medium, i.e. the considered waves are fast waves. Thus, the cylinder or spherical waves propagate along the closed cylinder or spherical interface, respectively between the low loss and the high loss dielectrics. This wave field is concentrated nearby the curved interface much more than the wave field on the flat plane interface. The distinguish feature of cylinder and spherical wave is the more dissipation in high loss medium the more field concentration nearby the curved interface. Characteristics of studied waves strongly depend on dielectric properties of high loss medium. It gives the opportunity to use such waves in dielectrometry of high loss media.