Non-uniform DGS Low Pass Filter with Ultra-wide Stopband
New low pass filters with ultra-wide stopband by using dumbbell defected ground structures (DGSs) with size reduction are presented in this paper. Non-uniform DGSs etched under a stepped-impedance microstrip line are developped to get better filter performances of transmission zeros, enhanced return loss and ultra-wide stopband that is beneficial to higher order harmonic suppression. A comparison of low pass filters between standard 50-ohm microstrip line and stepped-impedance microstrip line has been evaluated, respectively. The proposed low pass filter with non-uniform dumbbell DGSs and steppedimpedance microstrip line has better performances than that with uniform DGSs and uniform microstrip line, and simultaneously, DGS units are decreased and which brings a smaller circuit size. The design is demonstrated by measurement.
Jian-Kang Xiao Yu-Feng Zhu Jeffrey S.Fu
College of Computer and Information, Hohai UniversityChangzhou, 213022, ChinaState Key Laboratory of College of Computer and Information, Hohai UniversityChangzhou, 213022, China Department of Electronic Engineering, Chang Gung UniversityTaoyuan, Taiwan, 333, ROC
国际会议
第九届国际天线、电波传播及电磁理论学术研讨会(ISAPE2010)
广州
英文
1-4
2010-11-29（万方平台首次上网日期，不代表论文的发表时间）