Radioelectronics and Communications Systems

, Volume 61, Issue 11, pp 522–528 | Cite as

Increasing Q-Factor of Planar Dielectric Resonators with Whisper Gallery Modes

  • A. E. Kogut
  • E. A. KogutEmail author
  • R. S. Dolya
  • S. O. Nosatiuk
  • S. N. Kharkovsky
  • Jaochang He


Planar dielectric resonators (DR) with height significantly lower than the operating wavelength are investigated as a new class of disk dielectric resonators of the millimeter wavelength range with whispering gallery (WG) modes. It is known that in the open state, such resonators based on the WGmodes are not excited due to high radiation losses. It is shown that the solution of this problem is the partial shielding of the disk dielectric structures with a plane-parallel screen by placing the disk between two flat conducting mirrors. It has been established that by introducing an air gap between the flat base of the dielectric disk and one of the conductive mirrors, it is possible to increase the quality factor of the planar DR almost twice. One of the reasons for this is the partial displacement of the resonant field of the WG modes from the dielectric region to the air gap, where the dielectric losses are lower. In addition, an increase in the air gap in the range of optimal values, comparable to half the working wavelength, leads to a decrease in ohmic losses. The above causes an increase in the quality factor of planar DR as an air gap is extended.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    G. Annino, M. Cassettari, M. Martinelli, “Study on planar whispering gallery dielectric resonators. I. General properties,” Int. J. Infrared Millimeter Waves 23, No. 4, 597 (2002). DOI: 10.1023/A:1015709927809.CrossRefGoogle Scholar
  2. 2.
    G. D. V. Santhosh Kumar, K. C. James Raju, “Whispering gallery modes of planar dielectric resonators in LTCC technology,” Proc. of Int. Conf. on Microelectronics, Communications and Renewable Energy, 4–6 June 2013, Kanjirapally, India (IEEE, 2013), pp. 474–479. DOI: 10.1109/AICERA-ICMiCR.2013.6576026.Google Scholar
  3. 3.
    Nuramirah Mohd Nor, Mohd Haizal Jamaluddin, Muhammad Ramlee Kamarudin, Siti Zareen Naqiyah Zool Ambia, “Design of planar dielectric resonator antenna array at 28 GHz,” Indonesian J. Electrical Engineering Computer Science 5, No. 3, 622 (2017). DOI: 10.11591/ijeecs.v5.i3.pp622-627.CrossRefGoogle Scholar
  4. 4.
    M. E. Ilchenko, V. F. Vzyatyshev, L. G. Gasanov, et al. Dielectric Resonators [in Russian, ed. by M. E. Ilchenko] (Radio i Svyaz’, Moscow, 1989).Google Scholar
  5. 5.
    A. Ya. Kirichenko, Yu. V. Prokopenko, Yu. F. Filippov, N. T. Cherpak, Quasi-Optical Solid-State Resonators [in Russian] (Naukova Dumka, Kyiv, 2008).Google Scholar
  6. 6.
    V. B. Yurchenko, A. Altintas, M. Ciydem, S. Koc, “Experimental conditions for the excitation of thin disk whispering-gallery-mode resonators,” PIER C 43, 29 (2013). DOI: 10.2528/PIERC13062803.CrossRefGoogle Scholar
  7. 7.
    G. V. Golubnichaya, A. Ya. Kirichenko, E. V. Krivenko, V. I. Lutsenko, “The effect of gap width between disks on the Q value of a laminar dielectric disk resonator,” Tech. Phys. Lett. 41, No. 3, 281 (2015). DOI: 10.1134/S1063785015030207.CrossRefGoogle Scholar
  8. 8.
    A. Ya. Kirichenko, G. V. Golubnichaya, I. G. Maximchuk, V. B. Yurchenko, “Q-factor and excitation efficiency of laminar quasi-optical dielectric resonators,” Telecom. Radio Eng. 73, No. 1, 73 (2014). DOI: 10.1615/TelecomRadEng.v73.i1.60.CrossRefGoogle Scholar
  9. 9.
    A. E. Kogut, R. S. Dolia, S. O. Nosatiuk, Ye. A. Shulga, Jaochan He, “Excitation of whispering gallery modes in a disk planar dielectric resonator by a coupling slot,” Proc. National Academy Sciences Belarus. Physical-Tech. Ser., No. 3, 121 (2017). URI: Google Scholar
  10. 10.
    E. N. Ivanov, A. A. Karachev, D. P. Tsarapkin, “Increasing the excitation efficiency of disk dielectric resonators,” Radioelectron. Commun. Syst. 30, No. 10, 68 (1987).Google Scholar
  11. 11.
    E. L. Ginzton, Microwave Measurements (McGraw-Hill, New York, 1957).Google Scholar
  12. 12.
    S. L. Skripka, V. V. Danilov, I. S. Pavlovsky, “Planar structures of waveguiding surcuitry for millimeter band,” Telecom. Radio Eng. 71, No. 15, 1411 (2012). DOI: 10.1615/TelecomRadEng.v71.i15.80.CrossRefGoogle Scholar
  13. 13.
    A. E. Kogut, S. O. Nosatyuk, V. Solodovnik, R. S. Dolia “Implementation of higher order forced oscillations mode in shielded dielectric resonators by using slotline,” Radioelectron. Commun. Syst. 57, No. 10, 451 (2014). DOI: 10.3103/S0735272714100033.CrossRefGoogle Scholar
  14. 14.
    A. E. Kogut, R. S. Dolya, S. O. Nosatyuk, Jaochan He, “Whispering gallery mode excitation in the shielded dielectric resonator using a slot line,” Telecom. Radio Eng. 75, No. 2, 95 (2015). DOI: 10.1615/TelecomRadEng. v75.i2.10.CrossRefGoogle Scholar
  15. 15.
    A. E. Kogut, V. V. Kutuzov, V. A. Solodovnik, S. N. Kharkovsky, “On possibility of rarefaction of the spectrum of forced oscillations like a whispering gallery in cylindrical dielectric resonator,” Radiofiz. Electron. 6, No. 2–3, 218 (2001).Google Scholar

Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  • A. E. Kogut
    • 1
  • E. A. Kogut
    • 2
    Email author
  • R. S. Dolya
    • 1
  • S. O. Nosatiuk
    • 1
  • S. N. Kharkovsky
    • 3
  • Jaochang He
    • 4
  1. 1.Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of UkraineKharkivUkraine
  2. 2.Karazin Kharkiv National UniversityKharkivUkraine
  3. 3.Western Sydney UniversitySydneyAustralia
  4. 4.Eastern Chinese Research Institute “Photoelectronics”WuhuChina

Personalised recommendations