Title :
Three-pole dielectric resonator microwave bandpass active filter
Author :
Madrangeas, B. ; Jarry, B. ; Guillon, P. ; Larroque, J. ; Theron, B. ; Parise, D.
Author_Institution :
IRCOM, Limoges Univ., France
fDate :
4/1/1992 12:00:00 AM
Abstract :
A lossless microwave dielectric resonator (DR) active filter is presented. Equivalent circuits for a dielectric resonator coupled to a microstrip line or to another dielectric resonator are developed from an electromagnetic analysis. With the overall electrical model of the passive and active filters described by a microwave CAD program, simulations and sensitivity analysis can be obtained. In the active filter circuit a feedback active loop (composed of a variable gain amplifier and a phase shifter) is coupled to the central DR of the passive filter to compensate for its losses. Measurements of temperature performance, power handling, third-order intermodulation product and noise level are included
Keywords :
active filters; band-pass filters; dielectric resonators; equivalent circuits; feedback; intermodulation; microwave filters; sensitivity analysis; strip line components; CAD program; dielectric resonator; electromagnetic analysis; equivalent circuits; feedback active loop; microstrip line; microwave bandpass active filter; noise level; phase shifter; power handling; sensitivity analysis; simulations; temperature performance; third-order intermodulation product; three pole filter; variable gain amplifier;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
