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Whispering gallery mode resonators in microwave physics and technologies

Published online by Cambridge University Press:  08 July 2016

Alexander Barannik*
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics, NAS of Ukraine, 61085 Kharkiv, Ukraine. Phone: +380577203363
Nickolay Cherpak
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics, NAS of Ukraine, 61085 Kharkiv, Ukraine. Phone: +380577203363
Alexander Kirichenko
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics, NAS of Ukraine, 61085 Kharkiv, Ukraine. Phone: +380577203363
Yurii Prokopenko
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics, NAS of Ukraine, 61085 Kharkiv, Ukraine. Phone: +380577203363
Svetlana Vitusevich
Affiliation:
Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich, 52425 Jülich, Germany
Vladimir Yakovenko
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics, NAS of Ukraine, 61085 Kharkiv, Ukraine. Phone: +380577203363
*
Corresponding author:A. Barannik Email: a.a.barannik@mail.ru

Abstract

We review the main results of the development of whispering gallery mode (WGM) resonators and their unique applications due to their quasi-optical functionality. Several types of advanced WGM resonators are proposed by the authors. The theoretical results are described for the resonators with an analytical solution of the electromagnetic problems. Special emphasis is given to the interaction of moving charged particles and waves of cylindrical resonators. Important aspects are described concerning the developed sapphire resonators, for which an exact solution can only be found by using specially designed computer program products. A separate section of the paper is devoted to application aspects of the WGM resonators. In particular, it describes advanced solutions for overcoming the problems of measuring the small microwave (MW) surface impedance of unconventional superconductors in the form of large-area thin films and small samples under study. In addition, a demonstration of accurate complex permittivity measurements of small volumes of lossy liquids is provided. Special emphasis is given to highly stable MW signal sources, namely Ka-band transistor-based feedback oscillator and solid-state maser WGM oscillators. Recently obtained results are presented of experimental studies of the auto-oscillatory system developed on the basis of the WGM resonator with relativistic electron beam.

Type
Tutorial and Review Paper
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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