Compact, high-Q, zero temperature coefficient, TE011 sapphire-rutile microwave distributed Bragg reflector resonators

M E Tobar; D Cros; P Blondy; E N Ivanov

doi:10.1109/58.920716

Compact, high-Q, zero temperature coefficient, TE011 sapphire-rutile microwave distributed Bragg reflector resonators

IEEE Trans Ultrason Ferroelectr Freq Control. 2001 May;48(3):821-9. doi: 10.1109/58.920716.

Authors

M E Tobar¹, D Cros, P Blondy, E N Ivanov

Affiliation

¹ Department of Physics, University of Western Australia, Nedlands 6903, WA, Australia. mike@physics.uwa.edu.au

PMID: 11381707
DOI: 10.1109/58.920716

Abstract

Some novel new resonator designs based on the distributed Bragg reflector are presented. The resonators implement a TE011 resonance in a cylindrical sapphire dielectric, which is confined by the addition of rutile and sapphire dielectric reflectors at the end faces. Finite element calculations are utilized to optimize the dimensions to obtain the highest Q-factors and zero frequency-temperature coefficient for a resonator operating near 0 degree C. We show that a Q-factor of 70,000 and 65,000 can be achieved with and without the condition of zero frequency-temperature coefficients, respectively.