A whispering gallery mode sapphire resonator with semi-spherical enclosure

Author

Chi Wang ; Zaki, K.A.

Author_Institution

Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA

Volume

2

fYear

2000

fDate

11-16 June 2000

Firstpage

1149

Abstract

A new ultra-stable sapphire resonator combined with a specially designed enclosure with semi spherical sidewall is presented and modeled by mode matching method. Stair steps are used to approximate the semi spherical sidewall to simplify the modeling procedure. The characteristic equation of the sapphire resonator can be obtained by solving the discontinuities of the cylindrical region and the spherical region. Resonant frequency, field distribution and unloaded Q of the resonant mode are obtained. Accurate and reliable results of the resonator can be obtained. Good separation of a whispering Gallery mode is obtained by optimizing the structure dimensions.

Keywords

Q-factor; dielectric resonators; mode matching; sapphire; Al/sub 2/O/sub 3/; Q-factor; characteristic equation; field distribution; mechanical design; mode matching model; resonant frequency; semi-spherical enclosure; stair steps; whispering gallery mode sapphire resonator; Boundary conditions; Educational institutions; Electromagnetic fields; Equations; Mode matching methods; Resonance; Resonant frequency; Stability; Vibrations; Whispering gallery modes;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest. 2000 IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-7803-5687-X

Type

conf

DOI

10.1109/MWSYM.2000.863561

Filename

863561