Concerning Q of a cylindrical dielectric resonator screened by a waveguide

A large number of works are devoted to screened dielectric resonators. Principal consideration is given to a numerical investigation of the dependence of the elements of a scattering matrix on various parameters of the structure. The peculiarities of screened dielectric resonators are considered from a different aspect: the dependence of the Q of oscillations with a different azimuth-index on the size of the screen waveguide, and the unusual nature of the quest for a Q of oscillations in a screened system and the Q of an unscreened dielectric resonator in free space are investigated.