Title :
Design of compact ultra wide-stopband lowpass filter
Author :
Wenxiang, Xia ; Xinfeng, Lin ; Yongzhong, Hu
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
For miniaturization and harmonic suppression, a novel planar compact lowpass filter is presented in this paper. A conventional stepped-impedance lowpass filter is modified by some microstrip steps connected in 90 ° and some T-shaped transmission lines integrated into the lowpass filter. The proposed lowpass filter has the advantage of low insertion loss (below 0.4 dB at 0~2 GHz), ultra wide stopband (over 20 dB at 3~9 GHz) and compact size. Experiment validates the design concept.
Keywords :
electric impedance; harmonics suppression; low-pass filters; microwave devices; transmission lines; ultra wideband technology; T-shaped transmission line; compact ultra wide-stopband lowpass filter; conventional stepped-impedance lowpass filter; harmonic suppression; insertion loss; microstrip step; planar compact lowpass filter; Harmonic analysis; Impedance; Low pass filters; Microwave filters; Passband; Power harmonic filters; Resonator filters; compact size; low loss; lowpass filter; ultra wide-stopband;
Conference_Titel :
Computational Problem-Solving (ICCP), 2011 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4577-0602-8
Electronic_ISBN :
978-1-4577-0601-1
DOI :
10.1109/ICCPS.2011.6092223
