基于传统CIC抽样滤波器的改进与仿真  

Improvement and Simulation Based on the Traditional CIC Filter

作　　者：徐双全[1] 蒋宇中[1] 江海[1] 聂峰 

机构地区：[1]海军工程大学电子工程学院,武汉430033 [2]山东武警总队,济南250000

出　　处：《舰船电子工程》2012年第3期78-80,共3页Ship Electronic Engineering

摘　　要：文章分析了传统CIC(Cascade Intergrator-Comb)滤波器幅频响应不理想的原因,并针对其问题提出了分别用级联余弦滤波器以及增益补偿滤波器来改善其性能。仿真结果表明,改进后的CIC滤波器阻带衰减有26dB的提高,且通带特性有良好的改善。最后其实现结构特性表明,改进后的CIC滤波器在实际应用和深入研究中有着现实意义。The reason of the conventional CIC（Cascade Intergrator Comb） filter＇s undesirable amplitude-frequency response is analysed,and the performance of the CIC filter is enhanced by using a cosine filter and a compensation filter respectively.It is shown in the result of simulation that the stop-band attenuation of the improved CIC filter makes 26dB better than the traditional CIC.Besides the characteristic of the pass-band is modified evidently.The features of its implementation structure suggests that the improved CIC filter is of great significance in the practical application and further study.

关 键 词：CIC滤波器 性能改善 余弦滤波器 补偿滤波器 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]