Improved side-coupled three-line wideband bandpass filter

被引：1
|
作者：
Li, Li [1 ]
Lin, Haodong [2 ]
Tian, Shu Lin [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Automat Engn, 2006 Xiyuan Ave, Chengdu 611731, Peoples R China
[2] Univ Elect Sci & Technol China, Sch Elect Engn, 2006 Xiyuan Ave, Chengdu 611731, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2017年 / 59卷 / 08期
关键词：
short-ended microstrip stub; side-coupled; three-line filter; wideband bandpass filter; DESIGN; RESONATORS;
D O I：
10.1002/mop.30676
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：
This letter presents an improved side-coupled three-line filter, which is loaded by two short-ended microstrip stubs. The mechanism of improved filter is that the order of original three-line filter is increased from third order to fifth order. As a result, the fractional reflection bandwidth below -10 dB of improved filter is raised from 75% to 98%, and its selectivity (skirt factor) is enhanced from 64% to 75%. The proposed filter has been fabricated and verified on the substrate of 0.508 mm thickness. It is effective on this thin substrate.
引用
收藏
页码：2075 / 2078
页数：4
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