基于并联耦合线谐振节的窄带带通滤波器的研究  

Study of narrow bandpass filter based on parallel-coupled lines resonator

作　　者：刘本杰[1] 吕洪光[1] 邓腾彬[2] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054 [2]东莞电子科技大学电子信息工程研究院,广东东莞523808

出　　处：《电子元件与材料》2014年第6期66-68,共3页Electronic Components And Materials

基　　金：东莞市高等院校科研机构科技计划资助项目(No.2012108101019)

摘　　要：设计了一种基于并联耦合线谐振节的窄带带通滤波器。该滤波器由常见平行耦合线带通滤波器与并联耦合线谐振节构成。利用并联耦合线谐振节结构的特性,借助ADS软件设计了一个中心频率为4.9 GHz的窄带带通滤波器。仿真结果表明,其3 dB带宽为236 MHz,矩形系数为2.8。该滤波器具有良好的带外抑制能力和更加陡峭的通带到阻带过渡。A narrow band-pass filter was designed, which consisted of common bandpass filter and parallel-coupled lines resonator. By utilizing the characteristics of structure of the parallel coupled lines resonator, a center frequency of 4.9 GHz narrow bandpass filter was implemented with the aid of ADS software. Simulation results show that 3 dB bandwidth of the filter is 236 MHz and rectangular coefficient is 2.8. The filter has excellent harmonics suppression and steeper transition cuve.

关 键 词：带通滤波器 平行耦合线 窄带 谐振器 矩形系数 ADS 

分 类 号：TN91[电子电信—通信与信息系统]