Kogut O. Forced whispering gallery modes in the dielectric resonators for millimeter range of wavelength

Object of investigations: physical phenomena in excitation of whispering gallery modes in dielectric resonators in millimeter waveband. Purpose: creation of high Q-factor resonant systems in millimeter waveband based on dielectric resonators with forced whispering gallery modes. Methods: radiophysical methods for the measuring of spectral, energy, polar characteristics and fields distribution of forced whispering gallery modes in different dielectric resonators. The popular wellknown analitical methods for the solution of electrodynamic tasks were used in theoretical investigations. Novelty: in first time the conditions of the effective excitation (as the amplitude of signal in receiver) of the millimeter wave whispering gallery modes in dielectric ball placed in waveguide radiator field were determine; in first time the aplication of the barrel-shaped dielectric resonator was proposed for the cleaning of the spectrum of forced whispering gallery modes in dielectric spheres; in first time the dependence of the distributions of whispering gallery modes fields in dielectric ellipsoids from the conditions of their excitation was determined; in first time the conditions of the whispering gallery modes excitation in different dielectric resonators for the creation of millimeter wave active devices with new or improved output characteristics in comparison with wellknown analogs such as oscillator with the mechanic tuning of freqeuncy and three-diode combiner were applied; in first time the effective possibility of determination of complex permittivity of ice based on the using of high Q-factor hemiball dielectric resonators with whispering gallery modes in millimeter waveband was shown.