PARTICULARITIES OF INTER-TYPE INTERACTION IN DISK QUASIOPTICAL DIELECTRIC RESONATOR IN THE CASE OF INTERNAL EXCITATION OF PARASITIC OSCILLATIONS
Disc dielectric resonators with whispering gallery modes are usually characterized by high Q-factor, nevertheless, dense spectrum of these oscillation is the factor which impedes their use as microwave elements. In particular, inter-type interaction of oscillations results in the distortions of ampl...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Akademperiodyka
2015-12-01
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| Series: | Радиофизика и электроника |
| Subjects: | |
| Online Access: | http://re-journal.org.ua/sites/default/files/file_attach/2015-4/12.pdf |
| Summary: | Disc dielectric resonators with whispering gallery modes are usually characterized by high Q-factor, nevertheless, dense spectrum of these oscillation is the factor which impedes their use as microwave elements. In particular, inter-type interaction of oscillations results in the distortions of amplitude-frequency characteristics. The investigation of particularities of this interaction allows one to understand conditions when they appear and find the possibilities to avoid them. The particularities of inter-type interaction in disk quasioptical resonator, excited at high azimuthal modes, in the case of internal excitation of parasitic oscillations in single disk are investigated experimentally. The influence of parameters of coupling element between the resonator and dielectric waveguide on the resonance characteristics is studied. It is shown, that this influence can be compensated by introducing the additional irregularity. Also it is demonstrated, that parameters of two-hump resonant characteristic strongly depend upon azimuthal position of this irregularity. Till the present time the intermode interaction was investigated only in the case of external excitation, using two disk dielectric resonators. The obtained results can be used as a method for selection of disc dielectric resonator oscillation spectrum. |
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| ISSN: | 1028-821X 2415-3400 |