NOVEL MICROSTRIP DUAL-BAND BANDPASS FILTER WITH WIDE STOPBAND AND HIGH ISOLATION

被引：2

作者：

Guan, Xuehui ^{[1
,2
]}

Fu, Wei ^{[1
]}

Li, Guohui ^{[2
]}

Jiang, Shan ^{[1
]}

Liu, Haiwen ^{[1
]}

机构：

[1] E China Jiaotong Univ, Sch Informat Engn, Nanchang 330013, Peoples R China

[2] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2011年 / 53卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

anti-parallel coupled microstrip line; dual-band filter; stepped-impedance resonator; spur-line; PASSBAND RESPONSE; DESIGN;

D O I：

10.1002/mop.25881

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 novel microstrip dual-band bandpass filter (BPF) using spur-line-loaded stepped-impedance resonator (SIR) is proposed in this letter. Anti-parallel coupled microstrip line is used to realize the dual-band coupling and produce a transmission zero within two passbands. High isolation between two passbands is achieved. A spur-line is loaded to the SIR to eliminate the higher spurious frequencies of the resonator. A dual-band BPF with central frequencies of 2.4 and 5.6 GHz is designed. The designed filter has a wide stopband below -20 dB from 6 GHz to 11 GHz. Isolation between two passbands is below -60 dB. All the theoretical analysis and design procedures are discussed. The predicted performance of the dual-band BPF is confirmed in experiment. (C) 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:803-806, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25881

引用

页码：803 / 806

页数：5

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