Title :
Dual-mode conductor-loaded cavity filters
Author :
Wang, Chi ; Zaki, Kawthar A. ; Atia, Ali E.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
fDate :
8/1/1997 12:00:00 AM
Abstract :
A new class of dual-mode filters consisting of cylindrical-waveguide cavities loaded with perfect conducting cylindrical disks is presented. Resonant frequencies, fields, and the unloaded Q of the resonator are rigorously analyzed by mode-matching techniques. A complete set of data for filter design is given. The results show that the resonator has high unloaded and and good spurious performance. The accuracy of the computed results are confirmed by comparison with the experimental data. An eight-pole elliptic-function filter for PCS applications was designed, constructed, and tested; excellent frequency response of the filter with wide spurious-free performance was obtained, which verifies the theory
Keywords :
Q-factor; UHF filters; cavity resonators; circular waveguides; elliptic filters; frequency response; microwave filters; mode matching; passive filters; resonator filters; waveguide filters; PCS applications; conductor-loaded cavity filters; cylindrical-waveguide cavities; dual-mode filters; eight-pole elliptic-function filter; fields; filter design; frequency response; mode-matching techniques; perfect conducting cylindrical disks; resonant frequencies; unloaded Q; Dielectric constant; Dielectric losses; Filtering theory; Frequency response; Insertion loss; Low pass filters; Personal communication networks; Resonant frequency; Resonator filters; Superconducting filters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
