DGS embedded transformed radial stub for ultra-wide stopband lowpass filter

被引：9
|
作者：
Xu, S. [1 ]
Ma, K. [1 ]
Meng, F. [1 ]
Yeo, K. S. [1 ]
机构：
[1] Nanyang Technol Univ, Sch EEE, Div Circuits & Syst, Singapore 639798, Singapore
来源：
ELECTRONICS LETTERS | 2012年 / 48卷 / 23期
关键词：
D O I：
10.1049/el.2012.2568
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 lowpass filter (LPF) with a wide stopband by using defected ground structures (DGSs) and a transformed radial stub (TRS) in combination is proposed. The characteristics of DGS cells are investigated and the DGS embedded TRS LPFs are designed and verified by experiment. The designed DGS embedded TRS LPF demonstrates a passband insertion loss of less than 1dB, a cutoff frequency (f(c)) of 2.5GHz, a wide stopband with more than 16dB rejection up to 14f(c), a passband return loss of better than 18dB and a compact size of 0.26 lambda(g) x 0.167 lambda(g) (lambda(g) is the guided wavelength at the cutoff frequency).
引用
收藏
页码：1473 / 1474
页数：2
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