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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimir: 0040-2508
ISSN On-line: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v57.i12.30
10 pages

Frequency Spectrum Evolution of Quasi-Optical Dielectric Resonators with Conducting Endplates

Nikolay T. Cherpak
O.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
A. A. Barannik
O.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
Yu. V. Prokopenko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine
Yu. F. Filippov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085, Ukraine
T.A. Smirnova
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085, Ukraine

RESUMO

Resonant frequency evolution of quasi-optical dielectric resonators (QDR) with conducting endplates (CEP) has been studied experimentally and theoretically under variations of endplate diameter, dielectric disk height and hole-in-disk diameter. Whispering gallery (WG) modes are excited in the resonators. K-band measurements were carried out using teflon QDR with aluminum CEP. A large frequency shift has been discovered for HE- and EH-modes at evolution of QDR with CEP to the open QDR. Moreover, transformation of axial index m=0 into m=1 is observed for HE-mode. In the studied resonators, HE-modes can only be excited with zero axial indexes. Evolution behavior of WG mode transformation into waveguide modes is shown as well. The studies allow one to solve a problem of wave mode identification in QDR with CEP.


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