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Whispering gallery modes in rutile resonators at millimeter wave frequencies

By: Krupka, J.; Martinelli, M.; Longo, I.; Cassettari, M.; Annino, G.; Derzakowski, K.;

2000 / IEEE / 83-906662-3-5

Description

This item was taken from the IEEE Conference ' Whispering gallery modes in rutile resonators at millimeter wave frequencies ' Whispering gallery modes in single crystal rutile resonator were measured at the frequency range 15-30 GHz. Predicted and measured values of resonant frequencies for several WGM were in excellent agreement. Permittivity components parallel and perpendicular to anisotropy axis have been evaluated and their values were /spl epsi//sub /spl perp//=85.8/spl plusmn/0.2% and /spl epsi//sub /spl par//=163.2/spl plusmn/0.2% at room temperature and frequencies 15-30 GHz. Dielectric loss tangent components of rutile measured at room temperature and frequency of 25 GHz were tan/spl delta//sub /spl perp//=4.2/spl times/10/sup -4//spl plusmn/10% and tan/spl delta//sub /spl par//=5.7/spl times/10/sup -4//spl plusmn/10%.