High Selectivity Differential Bandpass Filter Using Dual-Behavior Resonators

被引：3

作者：

Gao, Xin ^{[1
]}

Feng, Wenjie ^{[1
]}

Che, Wenquan ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Dept Commun Engn, Nanjing 210094, Jiangsu, Peoples R China

来源：

PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS | 2015年 / 53卷

基金：

中国国家自然科学基金;

关键词：

D O I：

10.2528/PIERL15040702

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 high selectivity differential bandpass filter (BPF) using two pairs of dual-behavior resonators (DBRs) is proposed in this letter. A high selectivity passband for the differential mode with second harmonic suppression is achieved, by utilizing shorted coupled lines with two short stubs. For the commonmode (CM) circuit, the CM responses can be suppressed over a wide frequency band by the loaded open/shorted stubs. To validate the feasibility of the proposed filter, a planar differential BPF (3-dB fractional bandwidth 4.9%) with good CM suppression is designed and fabricated. The theoretical and measured results agree well and show good in-band filtering performances and out-of-band harmonic suppression performances.

引用

页码：89 / 94

页数：6

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