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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.v69.i14.10
pages 1221-1228

QUASI-OPTICAL ANNULAR SAPPHIRE RESONATOR WITH INTERNAL CYLINDRICAL CONDUCTOR

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
K. I. Torokhtyi
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085; National Technical University "Kharkiv technical institute", 21, Frunze St., Kharkiv, 61077
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

RESUMO

A new approach to measurement of the surface resistance Rs of large conductive samples is investigated. The technique for determining Rs with the use of an open annular quasi-optical dielectric resonator in which whispering gallery modes are excited, is presented. The basic characteristics of the cavity resonator have been investigated both theoretically and experimentally within the frequency range from 30 to 40 GHz. The possibility to apply an annular dielectric resonator for measurement Rs of high-temperature superconductors is demonstrated.

Palavras-chave: surface resistance, Q-factor

Referências

  1. Cherpak, N., Barannik, A., Filipov, Yu. et al., Accurate microwave technique of surface resistance measurement of large-are <i>HTS</i> films using sapphire quasi-optical resonator.

  2. Cherpak, N.T., Barannik, A.A., Prokopenko, Yu.V. et al., Microwave properties of <i>HTS</i> films: measurements in the millimeter wave range.

  3. Egorov, V.N., Masalov, V.L. et al., Dielectric constant, loss tangent, and surface resistance of PCB materials at K-band frequencies.

  4. Shevchun, A.F., and Trunin, M.P., A technique for measuring surface impedance of superconducting materials within the temperature range 0.4 to 120 K.

  5. Barannik, A.A., Cherpak, N.T., and Prokopenko, Yu.V., Two-layered disc quasi-optical dielectric resonator: Electrodynamics and application perspectives for complex permittivity measurements of loosy liquids.

  6. Cherpak, N.T., Barannik, A.A., Bunyaev, S.A. et al., Measurements of millimeter-wave surface resistance and temperature dependence of reactance of thin <i>HTS</i> films using quasi-optical dielectric resonator.


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