Compact and High Selectivity Tri-Band Bandpass Filter Using Multimode Stepped-Impedance Resonator

被引：38

作者：

Liu, Hai-Wen ^{[1
]}

Wang, Yan ^{[1
]}

Wang, Xiao-Mei ^{[1
]}

Lei, Jiu-Huai ^{[1
]}

Xu, Wen-Yuan ^{[1
]}

Zhao, Yu-Long ^{[1
]}

Ren, Bao-Ping ^{[1
]}

Guan, Xue-Hui ^{[1
]}

机构：

[1] East China Jiaotong Univ, Nanchang 330013, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2013年 / 23卷 / 10期

基金：

美国国家科学基金会;

关键词：

Bandpass filter (BPF); even-oddmode; high selectivity; stepped-impedance resonator (SIR); tri-band;

D O I：

10.1109/LMWC.2013.2251618

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 miniaturized tri-band bandpass filter (BPF) using a multimode stepped-impedance resonator (SIR) with a 0 degrees tapped-feed structure is presented. The odd-and even-mode fundamental resonant frequencies and the first high-order resonant frequencies of the SIR are utilized to generate dual-mode dual-band response and the tapped side-coupled feed-lines construct an additional passband avoiding occupying extra size. Owing to the 0 degrees tapped-feed structure and the intrinsic characteristics of the SIR, multiple transmission zeros are created to improve the selectivity of the filter. The bands of the designed tri-band BPF are located at 1.57 GHz (GPS application), 3.5 GHz (WiMAX application) and 5.8 GHz (WLAN application). Good agreement between the simulated and the measured results is observed.

引用

页码：536 / 538

页数：3

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