A COMPACT BANDPASS FILTER WITH SOURCE-LOAD COUPLING BY USING SHORT-CIRCUITED COUPLED LINES BETWEEN PORTS

被引：8

作者：

Chu, Q-X. ^{[1
]}

Fan, L. ^{[1
]}

机构：

[1] S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China

来源：

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2010年 / 24卷 / 11-12期

关键词：

LOOP RESONATOR; DESIGN;

D O I：

10.1163/156939310792149786

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 compact filter with a T-shaped resonator and short-circuited coupled lines between two ports is presented. The frequency response of filter has four extra controllable transmission zeros in the stopband because of the multiple signal transmission paths and controllable source-load coupling strength. The positions of the transmission zeros in the stopband are controllable by adjusting the length of coupled lines. At the same time, the center frequency and bandwidth are both not changed. The bandwidth of filter can be adjusted by the different lengths of short-circuited stub of T-shaped resonator. In addition, the second harmonic is suppressed. Good skirt selectivity and controllable stopband characteristics can be achieved simultaneously.

引用

页码：1493 / 1500

页数：8

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