The influence of dielectric and conductor losses on the properties of spherical resonators

Spherical resonators have been discussed in the literature since 1883, i. e. since more than 130 years. Nevertheless many problems have not been solved until today. Therefore in this paper the eigenvalues, the field distributions and the Q-factors of spherical cavity resonators in dependence on the dielectric and conductor losses are discussed. Considering the material properties of the boundary walls in the case of cavity resonators, the conversion process from a cavity structure into the case of an open dielectric sphere in vacuum is examined.