Design Optimization of Microstrip Square-Ring Band-Pass Filter with Quasi-Elliptic Function

Resonant processes in dual-mode microstrip square-ring band-pass filter fed through L-shaped coupling arms have been studied using the Finite Difference Time Domain (FDTD) simulations. The performed field analysis has revealed that coupling arms act as additional half-wavelength resonators coupled w...

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Bibliographic Details
Published in2003 33rd European Microwave Conference pp. 175 - 178
Main Authors Hennings, A., Semouchkin, G., Semouchkina, E., Lanagan, Michael
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2003
Subjects
Arm
Band pass filters
Couplings
Design optimization
Finite difference methods
Magnetic field measurement
Magnetic resonance
Magnetic separation
Microstrip filters
Resonator filters
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Summary:Resonant processes in dual-mode microstrip square-ring band-pass filter fed through L-shaped coupling arms have been studied using the Finite Difference Time Domain (FDTD) simulations. The performed field analysis has revealed that coupling arms act as additional half-wavelength resonators coupled with the ring through both electric and magnetic fields. New filter designs with horseshoe resonators instead of coupling arms have been developed, which provide either pure magnetic or electric coupling at the resonant frequency. The obtained results demonstrate the possibility to essentially improve filter characteristics. Simulations results have been verified by the measurements of fabricated prototypes.
ISBN:9781580538343
1580538347
DOI:10.1109/EUMA.2003.340918