Title :
Dual-band bandstop filter using single tri-section stepped impedance open stub
Author :
Purushothaman. B;K.V. Phani kumar;S.S. Karthikeyan
Author_Institution :
Department of Electronics Engineering, Indian institute of information technology design and manufacturing, India
Abstract :
In this paper a dual-band bandstop filter using tri-section stepped impedance open stub configuration is presented. Transmission zero positions ( i.e stopbands ) can be controlled by tuning the impedances of the shunt tri-section stepped impedance unit and the series transmission line impedance is used to allocate the transmission poles to sharp the attenuation rate. Design equations were derived using lossless transmission line model. The simulated filter is fabricated using Roger/RT duroid 5870 substrate with thickness of 0.787mm and dielectric constant of 2.33. Good agreement between simulated and measured results is observed.
Keywords :
"Microwave filters","Resonator filters","Impedance","Optical filters","Transmission line measurements","Transversal filters","Filtering theory"
Conference_Titel :
Microwave and Photonics (ICMAP), 2015 International Conference on
Print_ISBN :
978-1-4673-6897-1
DOI :
10.1109/ICMAP.2015.7408703
