Control of bandstop response of Hi-Lo microstrip low-pass filter using slot in ground plane

This paper examines the effect of the geometrical shapes of a defected ground-plane structure (DGS) slot on performance of the Hi-Lo microstrip low-pass filter (LPF). A three-pole LPF based on an arrowhead DGS slot has 67% less length as compared to a conventional three-pole LPF. It has insertion lo...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2004-03, Vol.52 (3), p.1008-1013
Main Authors: Abdel-Rahman, A.B., Verma, A.K., Boutejdar, A., Omar, A.S.
Format: Article
Language:English
Subjects:
Circuit simulation
Cutoff frequency
Inductance
Insertion loss
Low pass filters
Microstrip filters
Microwave filters
Optical losses
Shape
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Summary:This paper examines the effect of the geometrical shapes of a defected ground-plane structure (DGS) slot on performance of the Hi-Lo microstrip low-pass filter (LPF). A three-pole LPF based on an arrowhead DGS slot has 67% less length as compared to a conventional three-pole LPF. It has insertion loss of 0.5 dB and 15-dB rejection in the stopband up to three times the cutoff frequency.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2004.823587