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High-Q Cylindrical Alumina Resonator Based on Bragg Confined Mode of Azimuthal Mode Number Greater Than Zero

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5 Author(s)
le Floch, J.-M. ; Univ. of Western Australia, Crawley ; Tobar, M.E. ; Mouneyrac, D. ; Cros, D.
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The author's report on the observation of a new type of Bragg confined mode in a dielectric loaded cavity. The structure is built from a hollow single layer dielectric cylinder loaded in a silver plated copper cavity. A resonance was observed at 13.4 GHz with an unloaded Q-factor of order 2 x105 , which is more than a factor of 6 above the dielectric loss limit. Previously such modes have only been realized from pure Transverse Electric modes with no azimuthal variations and only the E component. From simulations using a rigorous numeric technique it is shown that the mode has non-zero azimuthal variations and with dominant Er and E electric field components and Hz magnetic field component.

Published in:

Frequency Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE International

Date of Conference:

May 29 2007-June 1 2007