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ISSN 2415-3400 (Online)
ISSN 1028-821X (Print)


Barannik, AA, Vitusevich, SA, Protsenko, IA, Kharchenko, MS, Cherpak, NT

O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine
12, Proskura st., Kharkov, 61085, Ukraine
E-mail: ira_protsenko@bk.ru

Peter Grünberg Institute Forschungszentrum Juelich, Julich, Germany

Language: russian

While using whispering gallery modes dielectric resonators as measurement cells for finding the electrophysical parameters of materials it is necessary to choose the resonator structure, which is characterized by the acceptable radiation Q-factor values. Calculation of radiation Q-factor by analytical methods is possible for simple symmetric structures only. The numerical study of different shape resonators made of leucosapphire, which are limited with conducting end plates and without them are carried out in Ka-band. The disk resonators with one conducting end plate are studied experimentally too. The influence of tested material brought in the electromagnetic field on the resonator field distribution, frequency and radiation Q-factor is shown. The application opportunity of measurement cells based on such resonators for determination of (super)conductor microwave impedance and permittivity of dielectric liquids is analyzed. The obtained results make it possible to choose the resonator measurement cell with negligible radiation loss. 

Keywords: dielectric permittivity liquids, dielectric resonator, radiation Q-factor, superconductor

Manuscript submitted  01.07.2015 г.
PACS     07.05.Tp; 84.40.-x; 42.60.Da
Radiofiz. elektron. 2015, 20(3): 55-61
Full text  (PDF)

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