高性能CIC抽取滤波器研究与设计  

Design of High-powered CIC Decimator Filter

作　　者：刘立[1] 向新[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《电视技术》2013年第7期53-56,共4页Video Engineering

基　　金：陕西省自然科学基础研究资助项目(2009JM8001-4);航空科学基金资助项目(20095596014)

摘　　要：针对采样率变换系统中CIC抽取滤波器存在通带失真较大和阻带衰减较小的问题,提出一种高性能CIC抽取滤波器的设计方法,该方法采用补偿滤波器技术和非递归并行结构。仿真结果表明,通带失真与阻带衰减特性明显优于传统的CIC,CIC-Cosine,ISOP-CIC等滤波器。因此,适用于对幅频特性要求较高的采样率变换系统。In view of the problem of high pass band distortion and low stop band attenuation of CIC decimation filter in the sampling rata conversion sys- tem, a high-powered CIC decimator filter is proposed in this paper by using the technology of compensate filter and non-recursive parallel structure. Simulation results show that the proposed filter is more excellent on the stop band attenuation and pass band distortion contact with traditional CIC filter, CIC-Cosine filter and ISOP-CIC filter. Therefore, it is more appropriate in the sampling rata conversion system which has stricter require on magnitude performance.

关 键 词：CIC抽取滤波器 补偿滤波器 通带失真 阻带衰减 

分 类 号：TN713[电子电信—电路与系统]