Compact, high-Q, zero temperature coefficient, TE/sub 011/ sapphire-rutile microwave distributed Bragg reflector resonators

Author

Tobar, Michael E. ; Cros, Dominique ; Blondy, Pierre ; Ivanov, Eugene N.

Author_Institution

Dept. of Phys., Western Australia Univ., Nedlands, WA, Australia

Volume

48

Issue

3

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

821

Lastpage

829

Abstract

Some novel new resonator designs based on the distributed Bragg reflector are presented. The resonators implement a TE/sub 011/ 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/spl deg/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.

Keywords

Q-factor; cavity resonators; dielectric resonator oscillators; finite element analysis; microwave oscillators; optimisation; sapphire; titanium compounds; 0 C; Al/sub 2/O/sub 3/-TiO/sub 2/; TE/sub 011/ resonance; cavity resonator; compact high-Q sapphire-rutile resonators; cylindrical sapphire dielectric; dielectric reflectors; finite element calculations; microwave DBR resonators; microwave oscillators; optimization; reduced cavity wall losses; zero temperature coefficient; Dielectric losses; Distributed Bragg reflectors; Finite element methods; Permittivity; Q factor; Resonance; Resonant frequency; Stability; Tellurium; Temperature;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.920716

Filename

920716