A novel microstrip dual-mode bandpass filter with harmonic suppression

被引：26
|
作者：
Huang, X. D. [1 ]
Cheng, C. H. [1 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Dept Telecommun Engn, Nanjing 210003, Peoples R China
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2006年 / 16卷 / 07期
基金：
中国国家自然科学基金;
关键词：
bandpass filter (BPF); dual mode resonator; harmonic suppression; square-ring;
D O I：
10.1109/LMWC.2006.877122
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 dual-mode microstrip bandpass filter (BPF) with harmonic suppression is presented in this letter. The filter is composed of a perturbed square-ring resonator and two end-open L-shaped microstrip lines for the input and output of the resonator. The harmonic suppression of the BPF may be realized by choosing a proper length for the L-shaped microstrip line. The BPF has been investigated numerically and experimentally. Measured results show that the stop-band of the filter is increased up to near the third-order harmonic of the square-ring resonator due to harmonic suppression, and the rejection level is kept below -27 dB.
引用
收藏
页码：404 / 406
页数：3
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