VHF轴向螺旋大功率电调滤波器的研究与实现  

Design of VHF Axial Helical High Power Electronically Tunable Filters

作　　者：赵志远[1] 李平辉[2] 陈昆和[3] 程昆仑[1] 

机构地区：[1]解放军理工大学通信工程学院研究生4队,江苏南京210007 [2]解放军理工大学通信工程学院卫星通信系 [3]总参谋部第63研究所,江苏南京210007

出　　处：《军事通信技术》2010年第4期84-87,共4页Journal of Military Communications Technology

摘　　要：文章借助ADS和CST软件仿真,制作了一款结构简单且紧凑的二阶轴向螺旋电调带通滤波器。轴向螺旋滤波器的两个谐振器主要通过轴向磁场耦合,由于磁耦合产生的等效电感既参与谐振又参与输入输出匹配,所以制作调试起来相对比较麻烦,一次性成功率比较低。在ADS电路仿真的基础上,联合CST三维电磁仿真软件,使用场路结合的方法进行了更合理的仿真,大大提高了设计的效率。考虑功率、小型化的要求(加外导体壁后尺寸(71*26*40)mm3),滤波器的相对带宽指标定为10%,在可调范围30 MHz^88 MHz内保持相对稳定,中心插损小于1.5 dB,2f0处抑制大于55 dB。实验结果表明,测试结果与仿真曲线基本一致。A two-pole axial helical electronically tunable band pass filter of simple and compact structure was simulated and designed by combining ADS and CST.The magnetic coupling between the resonators of the filter is equivalent with mutual inductance which is concerned not only with resonance,but also with input and output coupling,so the fabrication and measure have low rate of success one-off.Based on the ADS circuit simulation,combining with CST 3D EM simulation,the field and circuit co-simulation is more reasonable,which enhances the efficiency of the design.For power handling and miniaturization(size is 71*26*40 mm3),FBW(Fractional bandwidth)of this filter was assigned as 10%,which keeps relatively constant in tunable frequency range.Insertion loss is less than 1.5 dB,and the rejection at 2f0is more than 55 dB.The result of experiment almost accords with the simulation.

关 键 词：轴向螺旋 电调带通 场路结合 

分 类 号：TN7[电子电信—电路与系统]