High-Q dielectrically loaded electrically small cavity resonators

Author

Centeno, A.E. ; Excell, P.S.

Author_Institution

Dept. of Electron. & Electr. Eng., Bradford Univ., UK

Volume

3

Issue

6

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

173

Lastpage

174

Abstract

The quality factor (Q) of a dielectrically loaded cavity resonator is reduced due to conductor losses. An electrically small dielectrically loaded cavity resonator is described where the conductor losses are minimized by the use of corrugated cylindrical walls. When excited in the TE/sub 01d/ dielectric resonator mode the unloaded Q-factor was seen to be 89% higher for the corrugated cavity than an equivalent cylindrical cavity. The calculated conductor Q-factor was 4.7 times greater. The proposed cavity structure therefore allows the dielectrically loaded cavity to have an unloaded Q-factor determined primarily by the dielectric loss of the dielectric resonator.<>

Keywords

Q-factor; cavity resonators; dielectric losses; TE/sub 01d/ dielectric resonator mode; conductor losses; corrugated cylindrical walls; dielectric loss; dielectrically loaded; electrically small cavity resonators; high-Q type; quality factor; Cavity resonators; Conductors; Corrugated surfaces; Dielectric losses; Finite difference methods; Magnetic fields; Numerical models; Permittivity; Q factor; Resonant frequency;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.219805

Filename

219805