摘要
提出了一种基于横向型信号干扰的新型多传输零点的宽带带阻滤波器。通过采用终端加载一段四分之一波长开路传输线枝节的弯折型反耦合线与两段对称的半波长传输线开路枝节相并联的方式,在滤波器的阻带内引入了五个传输零点,并在通带内产生了四个反射零点,从而获得了陡峭的过渡带特性、宽阻带特性以及较好的阻带抑制水平。最终设计的宽带带阻滤波器中心频率为3 GHz,20 d B衰减带宽可达106%。
Based on the horizontal signal interference, a novel wide-stopband bandstop filter with more transmission zeros performance was proposed and discussed. This filter was constructed by using a curved anti-coupled line with 1/4λopen transmission line stub loaded in terminal to parallel two symmetrical transmission lines of half wavelength open stub. The filter introduced five transmission zeros inside the stopband and four reflection zeros in the passband, which realized steep transition-band characteristic, wide stopband characteristic, and good stopband suppression. Results show that center frequency of the bandstop filter is 3 GHz and the 20 dB attenuation bandwidth is up to 106%.
出处
《电子元件与材料》
CAS
CSCD
2015年第2期54-57,共4页
Electronic Components And Materials
基金
国家科技支撑计划资助项目(No.2013BAk06B05)
国家科技支撑计划资助项目(No.2012BAH12B01)
关键词
信号干扰
带阻滤波器
反耦合线
开路枝节
传输零点
反射零点
signal interference
bandstop filter
anti-coupled line
open stub
transmission zero
reflection zero
