Miniaturized microstrip cross-coupled filters using quarter-wave or quasi-quarter-wave resonators

被引：44

作者：

Chen, CC ^{[1
]}

Chen, YR ^{[1
]}

Chang, CY ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Inst Elect Commun Engn, Hsinchu 30050, Taiwan

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2003年 / 51卷 / 01期

关键词：

microstrip cross-coupled filter; miniaturized filter; Quarter-wave resonator; quasi-quarter-wave resonator;

D O I：

10.1109/TMTT.2002.806924

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：

Miniaturized microstrip filters using quarter-wave or quasi-quarter-wave resonators with cross-coupling are presented. The quarter-wavelength resonators enable very compact positively or negatively cross-coupled filters to be realized. The combination of quarter-wave and quasi-quarter-wave resonators facilitates the cross-coupling with a proper coupling phase. A new explanation for the coupling phase between the main-coupling and cross-coupling paths is proposed. Different filters that use the proposed resonators are realized and may have either quasi-elliptical or flat group-delay responses. Measurement results correlate well with theoretical predictions.

引用

页码：120 / 131

页数：12

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