Title :
Novel ultra-wideband bandpass filter using planar Marchand balun
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 filters using planar Marchand balun are proposed and demonstrated in this paper. Based on the intrinsic 180° phase difference of the planar Marchand balun and the transversal filter concepts, one kind of UWB bandpass filter (3 dB fractional bandwidth ranging from 86% to 111.5%) with two transmission zeros located close to the passband can be realized, by cascading a planar Marchand balun and two transmission lines of different electrical length. Detailed design and synthesis procedures for the UWB bandpass filter is provided. Good agreement can be observed between the simulated and measured results.
Keywords :
baluns; band-pass filters; ultra wideband communication; UWB bandpass filter; planar Marchand balun; transversal filter; ultra-wideband bandpass filter; Band pass filters; Filtering theory; Impedance matching; Microwave filters; Resonator filters; Transmission line measurements; Transversal filters;
Conference_Titel :
Electrical Design of Advanced Packaging and Systems Symposium (EDAPS), 2011 IEEE
Conference_Location :
Hanzhou
Print_ISBN :
978-1-4673-2288-1
Electronic_ISBN :
2151-1225
DOI :
10.1109/EDAPS.2011.6213807
