A Fourth-Order Lumped-Element Bandpass Filter Constructed on Multilayer Substrates

被引：2
|
作者：
Cao, Ke [1 ]
Li, Qi-wei [1 ]
Cheng, Chong-hu [1 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Sch Elect Sci & Engn, Nanjing 210003, Jiangsu, Peoples R China
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2014年 / 24卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Bandpass filter (BPF); multilayer substrates; transmission zeros;
D O I：
10.1109/LMWC.2014.2348497
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 fourth-order bandpass filter scheme and its implementation with multilayer substrates are proposed in this letter. The filter is composed of two second-order filters and an impedance matching network between them, which provides one additional controllable transmission zero. By using two different feedback capacitors, two additional transmission zeros are introduced. The physical layout is fully interpreted and an experimental prototype is fabricated and measured. Good agreement between measured results and simulated results is observed. The results show the high out-of-band suppression.
引用
收藏
页码：745 / 747
页数：3
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