Miniaturised tri-band lowpass-bandpass filter using lumped-element structure

被引：10
|
作者：
Xu, Jin [1 ,2 ]
Wan, Hao [2 ]
Ding, Jiang-Qiao [1 ]
Zhu, Yin-Xia [3 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Jiangsu Key Lab Meteorol Observat & Informat Proc, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing 210044, Jiangsu, Peoples R China
[2] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Peoples R China
[3] Army Engn Univ PLA, Coll Commun Engn, Nanjing 210042, Jiangsu, Peoples R China
来源：
ELECTRONICS LETTERS | 2019年 / 55卷 / 05期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1049/el.2018.8054
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：
In this Letter, a miniaturised tri-band lowpass-bandpass (LP-BP) filter is proposed by using lumped-element structure. The lowpass passband (LP) and the first bandpass passband (1-BP) are produced by using the transmission zeros to divide a lowpass filtering response into a dual-band LP-BP filtering response. The second bandpass passband (2-BP) is produced by further loading a lumped-element circuit. As an example, an LP with 3 dB cut-off frequency of 1 GHz, and two BPs centred at 2.45/5.2 GHz for the WLAN applications are designed. The fabricated tri-band LP-BP filter has low passband insertion losses of 0.08/0.69/1.38 dB, and occupies a compact circuit area of 0.055 lambda(gc) x 0.063 lambda(gc).
引用
收藏
页码：272 / 273
页数：2
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