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电信和无线电工程
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN 打印: 0040-2508
ISSN 在线: 1943-6009

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电信和无线电工程

DOI: 10.1615/TelecomRadEng.v53.i6.70
pages 54-58

High-Q Resonances of the Whispering-Gallery-Mode in a Hemispherical Dielectric Resonator with a Cylindrical Shield

V. V. Kutuzov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085, Ukraine
A. Ye. Kogut
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085
S. N. Kharkovsky
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085

ABSTRACT

A hollow metal cylinder with a half-circle base is used as a shield of the hemispherical dielectric resonator screen with the whispering gallery (WG) modes. It has been demonstrated that the WG mode spectrum of such shielded resonator is considerably rarified in comparison to that of a similar resonator shielded with a hollow metal hemisphere. In the suggested resonator, high-Q "belt" modes whose fields are localized in the dielectric are excited by a lumped radiation source (coupling slot). The frequency dependence of the Q-factor has been measured. The experimental results agreed quite well with the theory.


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