Sharp Roll-Off Lowpass Filter With Wide Stopband Using Stub-Loaded Coupled-Line Hairpin Unit

被引：107
|
作者：
Velidi, Vamsi Krishna [1 ]
Sanyal, Subrata [1 ]
机构：
[1] Indian Inst Technol, Dept Elect & Elect Commun Engn, Kharagpur 721302, W Bengal, India
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2011年 / 21卷 / 06期
关键词：
Coupled-line; lowpass filter (LPF); microstrip; open-stub; stopband; DEFECTED GROUND STRUCTURE; LOW-PASS FILTER;
D O I：
10.1109/LMWC.2011.2132120
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 application of shunt open-stubs at the feed points of a center fed coupled-line hairpin resonator is presented for the design of compact lowpass filter (LPF) with very wide stopband. The transmission zeros of the basic unit are minimally affected by its association with the stubs. The stopband bandwidth and filter roll-off rates achieved here are larger than those achieved earlier. A prototype microstrip LPF having a very wide stopband up to nine times the filter cutoff frequency is fabricated.
引用
收藏
页码：301 / 303
页数：3
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