Open Access Open Access  Restricted Access Subscription Access
Dielectric resonance structure is placed within the hemispherical cavity

Implementation of higher order forced oscillations mode in shielded dielectric resonators by using slotline

Alexander E. Kogut, Sergey O. Nosatiuk, Vasil Solodovnik, R. S. Dolia


The electromagnetic characteristics of the shielded hemisphere dielectric resonator in 8-mm waveband were investigated experimentally. The utilization of a slotline for the excitation of whispering gallery modes in such resonator was suggested. It has been defined that the suggested excitation technique is efficient. It provides an opportunity to excite the high Q-factor higher order modes in shielded dielectric resonator without additional energy losses. It has been proved experimentally that the unloaded Q factor achieved in the resonator under investigation may exceed the threshold values, which are limited by the dissipative losses in the dielectric resonator material, due to the shift of the resonance field in the air gap between the metal and the dielectric resonator elements. It was demonstrated that the symmetry breakdown of the investigated resonator leads to a significant deterioration of its electromagnetic characteristics.


shielded dielectric resonator; whispering gallery modes; slot-line; electromagnetic characteristics

Full Text:



WEINSTEIN, L.A. Electromagnetic Waves. Moscow: Sov. Radio, 1975 [in Russian] 581 p.

ILCHENKO, M.E.; VZYATYSHEV, V.F.; GASSANOV, L.G.; ET AL., Dielectric Resonators. Moscow: Radio i Svyaz’, 1989 [in Russian, ed. by M. E. Ilchenko] 328 p.

KOGUT, A.Y.; KUTUZOV, V.V.; KHARKOVSKAYA, A.A.; KHARKOVSKY, S.N. Excitation of whispering-gallery type oscillations in quasi-optical metal-dielectric resonators by a coupling slot in the mirror. Telecom. Radio Eng., v.53, n.11, p.42-47, 1999, DOI:

FILIPPOV, Y.F.; KOGUT, A.Y.; KUTUZOV, V.V.; KHARKOVSKY, S.N.; EREMENKO, Z.Y. On radial distribution of the modes energy in shielded layered hemispherical resonator. Telecom. Radio Eng., v.55, n.12 (2001), DOI:

EREMENKO, Z.E.; FILIPOV, Y.F.; KHARKOVSKY, S.N.; KUTUZOV, V.V.; KOGUT, A.E. Whispering-gallery modes in shielded hemispherical dielectric resonators. IEEE Trans. Microwave Theory Tech., v.50, n.11, p.2647-2649, Nov. 2002, DOI:

GINZTON, E.L. Measurements at Centimeter Waves. Moscow: Izdat. Inostr. Lit., 1960 [in Russian] 519 p.

VALITOV, R.A.; DYUBKO, S.F.; MAKARENKO, B.I.; ET AL. Measurements at Millimeter and Submillimeter Waves. Techniques and Equipment. Moscow: Radio i Svyaz’, 1984 [in Russian, ed. by R. A. Valitov, B. I. Makarenko] 296 p.

KOGUT, A.E.; KUTUZOV, V.V.; SOLODOVNIK, V.A.; KHARKOVSKY, S.N. Whispering gallery modes induced in a partly shielded hemispherical dielectric resonator. Tech. Phys. Lett., v.27, n.11, p.940-941, 2001, DOI:

GOLDBERG, L.B. Theoretical investigation of the coupling betweeen the dielectric resonator and the microstrip transmission line. Elekronnaya Tekhnika, Ser. 1. Elektronika SVCh, n.7, p.41-47, 1983.

SKRESANOV, V.N.; GOLOVASHCHENKO, R.V.; NECHAYEV, O.G. Improvement of coupling characteristics of sapphire quasioptical dielectric resonator by microstrip line. Telecom. Radio Eng., v.67, n.15, p.1333-1344, 2008, DOI:

KHAR’KOVSKII, S.N.; KOGUT, A.E.; KUTUZOV, V.V. Excitation of ray oscillations in quasioptical dielectric cavities with whispering gallery modes. Tech. Phys. Lett., v.23, n.8, p.584-585, 1997, DOI:

© Radioelectronics and Communications Systems, 2004–2020
When you copy an active link to the material is required
ISSN 1934-8061 (Online), ISSN 0735-2727 (Print)
tel./fax +38044 204-82-31, 204-90-41