Microwave filters with improved spurious performance based on sandwiched conductor dielectric resonators

Author

Weily, Andrew R. ; Mohan, Ananda S.

Author_Institution

Telecom Group, Univ. of Technol., Sydney, NSW, Australia

fYear

2000

fDate

2000

Firstpage

520

Lastpage

524

Abstract

Microwave filters based on a novel resonator comprised of a sandwiched conductor dielectric resonator (SCDR) loaded in a cylindrical cavity are analyzed. The SCDR is a compact resonator which exhibits good spurious performance. The resonant frequencies of the various modes are analyzed, and mode charts, unloaded Q and slot coupling graphs are presented. S-parameters are computed using the FDTD method for a 4-pole elliptic function SCDR filter and compared with measured results. The measured results on spurious performance of the 4-pole filter shows a large improvement over conventional DR filters. The measured results agree closely with predicted values obtained using FDTD

Keywords

Q-factor; S-parameters; dielectric resonator filters; elliptic filters; finite difference time-domain analysis; microwave filters; passive filters; 4-pole elliptic function filter; FDTD method; S-parameters; cylindrical cavity; microwave filters; mode charts; resonant frequencies; sandwiched conductor DRs; sandwiched conductor dielectric resonators; slot coupling graphs; spurious performance improvement; unloaded Q; Conducting materials; Conductors; Dielectric measurements; Finite difference methods; Microwave filters; Performance analysis; Performance loss; Resonant frequency; Resonator filters; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2000 Asia-Pacific

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6435-X

Type

conf

DOI

10.1109/APMC.2000.925887

Filename

925887