Excitation of spherical dielectric resonator by ring periodical current

Now an attention is given to spherical dielectric resonator with a whispering gallery modes that have large values of the polar n and azimuthal m indices. The weak radiation of eigenmodes energy from a resonator is explained by full internal reflection of forming waves from a smooth spherical surface. Theoretical researches of fields' distributions and energies of forced modes in dielectric sphere are of interest at different methods of its excitations. The paper object is the electrodynamical study of forced modes in spherical dielectric resonator that is excited by an azimuthally periodical electrical current flowed along circle in equatorial plane of sphere.