Title :
Whispering gallery modes in dielectric substrate under a metal disc
Author :
Bunyayev, S.O. ; Barannik, A.A. ; Cherpak, N.T.
Author_Institution :
Nat. Acad. of Sci. of Ukraine, Kharkiv
Abstract :
Excitation of whispering gallery modes (WGM) in unrestricted dielectric substrate under metal disc placed at some distance from a surface of the dielectric substrate has been found experimentally. The proposed resonant structure is tuneable in a wide frequency range. The experiments were carried out in millimeter wave-band with single crystalline sapphire substrate. The calculated and measured data on frequencies and quality-factors are compared. The calculated distribution of the WGM fields is presented. Possibility of constructing high-Q microstrip WGM resonator is shown.
Keywords :
Q-factor; microstrip resonators; sapphire; whispering gallery modes; Al2O3; dielectric substrate; metal disc; microstrip resonator; quality factors; resonant structure; sapphire substrate; whispering gallery modes resonator; Dielectric measurements; Dielectric substrates; Frequency; Microstrip resonators; Millimeter wave technology; Optical resonators; Optical surface waves; Optical waveguides; Permittivity; Whispering gallery modes;
Conference_Titel :
Microwave Conference, 2007. European
Conference_Location :
Munich
Print_ISBN :
978-2-87487-001-9
DOI :
10.1109/EUMC.2007.4405354
