Compact structure with three attenuation poles for improving stopband characteristics

被引：41

作者：

Li, Rui ^{[1
]}

Kim, Dong Il ^{[1
]}

Choi, Chang Mook ^{[1
]}

机构：

[1] Korea Maritime Univ, Dept Radio Sci & Engn, Pusan 606791, South Korea

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2006年 / 16卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

band-pass filter (BPF); capacitive load; finite attenuation pole; low-pass filter (LPF); parallel coupled-line;

D O I：

10.1109/LMWC.2006.885617

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 novel compact structure with three controllable finite attenuation poles at stopband is presented. The new structure is composed of a pair of symmetrical parallel. coupled-lines and a capacitive load. With this configuration, three finite attenuation poles are available, which can improve the stopband characteristics of low-pass filters (LPFs) or the upper stopband performances of band-pass filters. The research method is based on a transmission-line model for tuning the finite attenuation poles. In order to examine the feasibility of the proposed structure, a new type of LPF with broad stopband and sharp cutoff frequency response is designed, fabricated, and measured. The experimental results of the fabricated circuit agree well with the simulation and analytical ones.

引用

页码：663 / 665

页数：3

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