Compact microstrip wideband bandpass filter with high selectivity

被引：23
|
作者：
Huang, Feng [1 ]
Wang, Jianpeng [1 ]
Li, Jialin [2 ]
Wu, Wen [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Minist Key Lab JGMT, Nanjing 210094, Jiangsu, Peoples R China
[2] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China
来源：
ELECTRONICS LETTERS | 2016年 / 52卷 / 08期
关键词：
microstrip filters; band-pass filters; compact microstrip wideband bandpass filter; compact size; two-stage parallel coupled-line prototype; modified parallel coupled-line structure; inherent transmission zero; fractional bandwidth; finite transmission zero; out-of-band rejection; in-band performance; frequency; 2; 5; GHz; LINE;
D O I：
10.1049/el.2015.4539
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 new microstrip wideband bandpass filter with compact size and high selectivity is presented. Originated from conventional two-stage parallel coupled-line prototype, modified parallel coupled-line structure is proposed to obtain high selectivity with inherent transmission zeros nearby the passband. Centring at 2.5 GHz, the realised wideband filter exhibits a 3 dB fractional bandwidth of 54.4% with finite transmission zeros. Furthermore, the filter features with nice in-band performance, and sharp out-of-band rejection. Experimental results are in good agreement with the simulated results.
引用
收藏
页码：626 / 627
页数：2
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