A novel defected ground structure and its application to a lowpass filter

被引：9
作者：
Li, Guo-Hui [1 ]
Jiang, Xin-Hua [1 ]
Zhong, Xiao-Ming [1 ]
机构：
[1] Shanghai Univ, Sch Commun & Informat Engn, Shanghai 200072, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2006年 / 48卷 / 09期
关键词：
DGS; defected parameters; LPF; sharpness factor; selectivity;
D O I：
10.1002/mop.21750
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel defected ground structure (DGS) with two semicircular defected areas is investigated for low pass filter (LPF) applications. An equivalent lumped L-C circuit model is presented and its corresponding L-C parameters are also extracted by using parametric relationships. With this structure, the effect of the defected parameters oil performance is detailed. Based oil the equivalent circuit model, a 3-pole LPF, using 2 DGS units, is optimally designed and implemented. The results from experiments confirm that the designed LPF call provide a very wide stop band, which is approximately 3.7 times of the cutoff frequency. (C) 2006 Wiley Periodicals, Inc.
引用
收藏
页码：1760 / 1763
页数：4
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