同轴腔体窄带带通滤波器快速设计方法  

Fast Design Method of Coaxial Resonator Narrow Band-pass Filter

作　　者：张强[1] 张贞鹏 李伟 

机构地区：[1]中国电子科技集团公司13所,石家庄050051 [2]空军驻石家庄地区军事代表室,石家庄050051

出　　处：《舰船电子对抗》2013年第4期95-100,共6页Shipboard Electronic Countermeasure

摘　　要：为了满足卫星用滤波器研制周期短、可靠性高的要求,提出了一种快速设计经典同轴腔体滤波器的方法。该方法通过原型滤波器查表可以计算滤波器节数、耦合常数、群时延、单腔谐振频率、单腔Q值等初始值;通过使用三维电磁(EM)仿真软件得到单腔调谐钉长度和加载电容值的对应关系、两个腔体间耦合系数及端口抽头高度等模型SnP参数;通过电路仿真软件使用集总元件对电容加载的量值进行优化,极大地提高了仿真的速度。最后使用该协同仿真方法设计一同轴腔体滤波器,并对仿真结果进行了验证。In order to satisfy the requirement of short design period and high reliability of filters used for satellite filters,a fast design method of classical coaxial resonator filter is presented in this paper. The initial values of design parameter such as the number of filter section, coupled coeffi- cient, group time-delay, single-cavity resonate frequency and Q-factor can be obtained from the pro- totype filter table;through 3D electromagnetism （EM） simulation software,the corresponding rela- tionship between the length of single-cavity tuning screw and loaded capacity value, coupling coeffi- cient between two cavities and SnP parameters of modules such as tap height of ports can be ob- tained; through the circuit simulation software,the simulation time can be greatly shorted by using lumped elements to optimize the loaded capacity value. Finally a coaxial resonator filter is designed by using this cooperating simulation method and the simulation result is validated.

关 键 词：同轴腔体滤波器 协同仿真 谐振 三维电磁 建模 

分 类 号：TN713.5[电子电信—电路与系统]