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

页码：2075 / 2078

页数：4

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