Compact microstrip low-pass filter with sharp rejection

被引：76
|
作者：
Tu, WH [1 ]
Chang, K [1 ]
机构：
[1] Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2005年 / 15卷 / 06期
关键词：
interdigital capacitor; low-pass filter; sharp rejection;
D O I：
10.1109/LMWC.2005.850479
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：
This letter presents a compact multisection sharp-rejection microstrip low-pass filter. Each section is consisted of a microstrip line section and an interdigital capacitor. The analysis for optimizing the attenuation poles by adjusting the finger number, and the width and length of the microstrip line section is presented. The cascaded four-section low-pass filter has a return loss of better than 17 dB and an insertion loss of less than 0.7 dB from dc to 1.6 GHz. The rejection is better than 20 dB from 2.1 to 7.5 GHz.
引用
收藏
页码：404 / 406
页数：3
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