Varactor-tuned active bandpass filter with low noise performance

被引：6

作者：

Kim, BW

Chun, YH

Yun, SW

机构：

[1] Sogang Univ, Dept Elect Engn, Seoul, South Korea

[2] Dongguk Univ, Millimeter Wave Innovat Technol Res Ctr, Seoul, South Korea

来源：

ELECTRONICS LETTERS | 2004年 / 40卷 / 15期

关键词：

D O I：

10.1049/el:20045109

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：

An active tunable bandpass filter based upon the negative resistance method using a microstrip combline network is presented. The negative resistance is realised using a common-drain series feedback structure. 0.4 octave tuning with significant improvement in passband performance was achieved and the noise performance was comparable with its passive counterpart.

引用

页码：945 / 946

页数：2