Field-simulation-based strategy for designing microstrip filters

The insertion loss spectrum of a microstrip open-loop square ring band-pass filter is analyzed by using the Finite Difference Time Domain (FDTD) field simulations. Visualization of standing waves at resonant frequencies guides the placement of stepped impedance sections or capacitive loads at electr...

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Bibliographic Details
Published inIEEE MTT-S International Microwave Symposium Digest, 2003 Vol. 3; pp. 1897 - 1900 vol.3
Main Authors Semouchkina, E., Semouchkin, G., Lanagan, M., Mittra, R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Analytical models
Band pass filters
Finite difference methods
Impedance
Insertion loss
Microstrip antennas
Microstrip filters
Resonant frequency
Time domain analysis
Visualization
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Summary:The insertion loss spectrum of a microstrip open-loop square ring band-pass filter is analyzed by using the Finite Difference Time Domain (FDTD) field simulations. Visualization of standing waves at resonant frequencies guides the placement of stepped impedance sections or capacitive loads at electric field maxima. Strategic load placement enables us to modify selected resonant modes, to monitor efficiently center and attenuation pole frequencies, to affect the shape and width of the pass-band, and to alter the input impedance. The presented approach is useful for miniaturizing various types of microstrip filters and antennas and optimizing their performance.
ISBN:9780780376953
0780376951
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2003.1210528