Miniaturized microstrip crosscoupled bandpass filter using novel stepped impedance resonators with a desirable upper stopband

被引：1
|
作者：
Zhao, Guohua [1 ]
Liu, Changjun [1 ]
机构：
[1] Sichuan Univ, Sch Elect & Informat Engn, Chengdu 610064, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2008年 / 50卷 / 05期
关键词：
microstrip bandpass filter; cross-coupling; harmonic suppression; miniaturization; stepped-impedance resonator;
D O I：
10.1002/mop.23343
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 miniaturized microstrip cross-coupling bandpass filter using new stepped impedance resonators (SIRs) with simultaneous suppression of the 2nd harmonic passband response is presented. Four improved and miniaturized SIRs constitute the Compact filter, which exhibits a sharp transition band due to two transmission Zeros at both sides of the passband. Two quarter-wavelength open-ended stub resonators are applied to provide extra transmission zeros for suppressing the 2nd harmonic passband. A bandpass filter with a center frequency at 2.5 GHz was designed and fabricated, of which experimental results validated the proposed filter design. (C) 2008 Wiley Periodicals, Inc.
引用
收藏
页码：1270 / 1273
页数：4
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