宽带中频采样抗混迭滤波器的设计与实现  

The Design and Implementation of the Anti-Aliasing Filter for Wideband IF Signals Sampling

作　　者：田海燕[1] 曹鹏[1] 王明飞[1] 许鹏鹏[1] 孟凡俊[1] 

机构地区：[1]北京印刷学院信息与机电工程学院

出　　处：《电子学报》2010年第B02期60-64,共5页Acta Electronica Sinica

基　　金：北京市学术创新团队项目(No.06020109002);北京市人才强教项目(No.06170107018)

摘　　要：由于受滤波器通带带宽、带内纹波、带外衰减量、插损、体积等性能参数的制约，设计和实现宽带中频抗混迭滤波器的技术要求往往比较高.首先介绍了中频带通采样技术及抗混迭滤波器设计的关键性能指标，电感、电容元件的主要参数与工作频率之间的变化关系及选用原则.然后，利用计算机仿真软件完成了滤波器的设计、元件参数配置与特性仿真，并提出了设计和实现高阶椭圆滤波器所采取的一系列措施，最后给出了9阶椭圆滤波器的设计电路及实测结果.As it is restricted by the filter＇s parameters, such as the pass-band bandwidth, in-band ripple, out-band attenua- tion,insertion loss and its volume and so on,designing and achieving broadband IF anti-aliasing filter is difficult. The IF band-pass sampling and anti-aliasing filter, and the relationship between the key parameters of the LC（inductors and capacitors ） and the work- ing fi＇equency, and LC components selection principles are introduced. Then it achieved the designing of the filters, the actual com- ponents parameters configuration and characteristic simulation with the computer simulation, and provided the methods to design and realize the higher-order elliptic filters. Lastly, gave the designed circuit and testing results of the 9-order elliptic filter.

关 键 词：抗混迭 椭圆滤波器 宽带 大动态 中频采样 

分 类 号：TN975.51[电子电信—信号与信息处理] TN13[电子电信—信息与通信工程]