Differential broadband filter based on microstrip coupled line structures

被引：10
|
作者：
Wang, Xiao-Hua [1 ]
Hu, Shen [2 ]
Cao, Qian-Yu [2 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China
[2] Univ Elect Sci & Technol China, Chengdu Coll, LAS Dept, Chengdu 610054, Peoples R China
来源：
ELECTRONICS LETTERS | 2014年 / 50卷 / 15期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Microstrip filters - Bandwidth - Microstrip lines - Microwave filters - Insertion losses;
D O I：
10.1049/el.2014.1014
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 coupled line schematic is proposed to build the differential filter featuring broadband, low insertion loss and good common-mode suppression. The proposed filter is composed of four quarter-wavelength coupled lines and four quarter-wavelength microstrip lines. The calculated, simulated and measured results are in good agreement with each other. The differential-mode signal can propagate with low insertion loss, whereas the common-mode signal will be suppressed below -10 dB. The fractional bandwidth of the proposed filter is 82% centred at 3 GHz.
引用
收藏
页码：1069 / 1070
页数：2
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