Title :
Novel Ultra-Wideband Bandpass Filter Using Shorted Coupled Lines and Transversal Transmission Line
Author :
Feng, Wenjie ; Che, Wenquan
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
A novel ultra-wideband (UWB) bandpass filter using two shorted coupled lines and a 270° transversal transmission line is proposed. The two shorted coupled lines are utilized to realize 180° phase inversion, while a folded transversal transmission line of 270° is introduced to perform as another power transmission path. Good impedance matching, UWB passband and wider upper stopband can be achieved. One prototype is fabricated for demonstration, good agreement is observed between simulated and measured performances of the UWB filter, indicating a fractional bandwidth of 124.6% (3-11.6 GHz).
Keywords :
band-pass filters; power transmission; power transmission lines; ultra wideband communication; UWB passband; folded transversal transmission line; fractional bandwidth; impedance matching; power transmission path; shorted coupled lines; ultra wideband bandpass filter; Band pass filters; Couplings; Passband; Power transmission lines; Transmission line measurements; Ultra wideband technology; Wireless communication; Bandpass filter (BPF); fractional bandwidth (FBW); shorted coupled lines; transversal transmission line; ultra-wideband (UWB);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2055840
