A hollow metal cylinder with a semicircle in the base is used as the shield of a hemispherical dielectric resonator with whispering gallery (WG) modes. It is shown that the spectrum of the WG modes of this resonator is clearer than the spectrum of a similar resonator with a hemispherical shield. It is determined that the high-Q-factor WG modes are excited in the proposed resonator by the coupling slot on the mirror. Their fields are localized in the dielectric. The frequency dependence of the Q-factor value is measured. A good conformity of this experimental dependence with the analytic dependence is obtained in this paper
S. Kharkovsky et al., "Excitation of the High-Q-factor Whispering Gallery Modes in the Hemispherical Dielectric Resonator with the Cylinder Shield," Proceedings of the 9th International Crimean Microwave Conference, 1999. Microwave & Telecommunication Technology. 1999 [In Russian with English abstracts], Institute of Electrical and Electronics Engineers (IEEE), Jan 1999.
The definitive version is available at http://dx.doi.org/10.1109/CRMICO.1999.815236
9th International Crimean Microwave Conference, 1999. Microwave & Telecommunication Technology. 1999 [In Russian with English abstracts]
Electrical and Computer Engineering
Keywords and Phrases
Q-Factor; Q-Factor Value; WG Modes Excitation; Coupling Slot; Cylinder Shield; Dielectric Resonators; Electromagnetic Shielding; Frequency Dependence; Hemispherical Dielectric Resonator; High-Q-Factor WG Modes; Hollow Metal Cylinder; Millimetre Wave Devices; Whispering Gallery Modes
Article - Conference proceedings
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