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Increasing the Q-factor of thin planar dielectric resonator with whispering gallery modes

Published online by Cambridge University Press:  13 May 2020

A. E. Kogut ,
M. T. Islam ,
E. A. Kogut ,
Z. E. Eremenko Open the ORCID record for Z. E. Eremenko [Opens in a new window]  and
R. S. Dolia Open the ORCID record for R. S. Dolia [Opens in a new window]
A. E. Kogut
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics of NAS of Ukraine, ak., Proskura 12, 61000Kharkiv, Ukraine
M. T. Islam
Affiliation:
Universiti Kebangsaan Malaysia (UKM), 43600 UKM, Bangi Selangor, Malaysia
E. A. Kogut
Affiliation:
V. N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv61022, Ukraine
Z. E. Eremenko
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics of NAS of Ukraine, ak., Proskura 12, 61000Kharkiv, Ukraine
R. S. Dolia*
Affiliation:
O.Ya.Usikov Institute for Radiophysics and Electronics of NAS of Ukraine, ak., Proskura 12, 61000Kharkiv, Ukraine
*
Author for correspondence: R. S. Dolia, E-mail: [email protected]
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Abstract

The spectral and energy characteristics of the tunable thin planar dielectric resonator with the movable metal mirror are researched. It is found that the high-Q HE-polarized whispering gallery modes (WGMs) are effectively excited in such a resonator by the dielectric waveguide. A mode set of the tunable thin planar dielectric resonator depends on the presence of an air gap in its design. Changing the height of the air gap affects the energy characteristics of the tunable thin planar dielectric resonators (DR). Shifting the resonant fields of WGMs from the dielectric disk to the air gap is the reason for this effect. It is shown that at certain heights of the air gap, increasing the unloaded Q-factor of the tunable thin planar DR and improving the excitation efficiency of WGMs in it is achieved.

Keywords

Passive components and circuits
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Special Issue 10: EuMCE 2019 Special Issue (Part II) , December 2020 , pp. 960 - 968
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Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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References

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