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

fYear

2011

fDate

21-23 Oct. 2011

Firstpage

265

Lastpage

268

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCPS.2011.6092223

Filename

6092223