Title :
Design of compact ultra-wideband filter using stepped impedance dual-mode resonator
Author :
Xiao, Z.-Y. ; Ma, D.-C. ; Xiang, L.-L. ; Hu, H.-H. ; Gao, S.
Author_Institution :
Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China
Abstract :
A compact ultra-wideband (UWB) filter is designed by a proposed stepped impedance dual-mode resonator. The dual-mode resonator is formed by adjusting the impedance ratio. There are four resonant modes inside pass-band of the novel filter, two of which are generated by dual-mode resonator and the other two modes are produced by parallel-coupled feed lines. This results in the formulation of the novel UWB filter with wide bandwidth and compact size. The measured results show that the 10 dB pass-band of the novel filter is from 5.2 GHz to 10.9 GHz and fractional bandwidth of up to 70%. The Simulated results are agreement well with the measured results.
Keywords :
band-pass filters; microwave filters; resonator filters; ultra wideband technology; UWB filter; compact ultra-wideband filter design; frequency 5.2 GHz to 10 GHz; impedance ratio; parallel-coupled feed lines; pass-band filter; resonant modes; stepped impedance dual-mode resonator;
Conference_Titel :
Signals Systems and Electronics (ISSSE), 2010 International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6352-7
DOI :
10.1109/ISSSE.2010.5606945
