一种改进型微带交指滤波器的仿真设计  

Simulation design of improved microstrip interdigital filter

作　　者：陈凯[1] 宋长宝[1] 蒋勤升[2] 汪海兵[1] 

机构地区：[1]电子工程学院 [2]中国人民解放军93617部队

出　　处：《计算机工程与应用》2012年第4期65-67,161,共4页Computer Engineering and Applications

摘　　要：针对微带交指滤波器KQ法及奇偶模阻抗法设计不够精确、不够简便的问题,研究了一种基于自互电容的终端短路式微带交指滤波器的设计方法,给出了详细的设计步骤及仿真设计实例。提出了一种微带交指滤波器的改进结构,该结构通过在交指滤波器的中间耦合节上增加一段λ0/8的微带线,使滤波器的3dB带宽从100MB减小到40MB,带内抖动减小了2.7dB,阻带衰减增加了2dB左右,该仿真结果证明了改进结构的有效性。To overcome the inexactitude and inconvenience of KQ method and parity module method, this thesis researches a designing method of terminal short-circuited microstrip interdigital filter based on self-mutual capacitance, gives detailed designing steps and ex- ample of simulation design. This paper puts forward an improved structure of microwave interdigital filter, this structure adds a mi- crostrip line whose length is 2o/8. This structure makes the 3 dB bandwidth decrease from 100 MB to 40 MB, passband dithering de- crease 2.7 dB, stopband attenuation decrease about 2 613, this simulation result shows that this improved structure is in effect.

关 键 词：微带滤波器 交指滤波器 终端短路式 先进设计系统(ADS) 

分 类 号：TN713[电子电信—电路与系统]