Title :
Compact wideband bandpass filter
Author :
Mandal, Mrinal Kanti ; Sanyal, Subrata
Author_Institution :
Electron. & Electr. Commun. Eng. Dept., Indian Inst. of Technol., Kharagpur
Abstract :
Designing wideband bandpass filters (BPF) with parallel-coupled microstrip lines requires tight coupling resulting in close separation between the lines and difficulty of fabrication. Here, it is shown that the etched slots in the ground plane of the parallel coupled lines can significantly increase the coupling. This technique has been extended to realize ultra-wideband BPFs having 3-dB fractional bandwidth greater than 100% and low insertion loss in the passband
Keywords :
band-pass filters; microstrip filters; microstrip lines; 3-dB fractional bandwidth; compact wideband bandpass filters; low insertion loss; parallel-coupled microstrip lines; ultra-wideband BPF; Band pass filters; Bandwidth; Cutoff frequency; Etching; Fabrication; Insertion loss; Microstrip filters; Passband; Resonator filters; Ultra wideband technology; Bandpass filter (BPF); microstrip; slot;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.860012
