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.
出处
《电视技术》
北大核心
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)
关键词
CIC抽取滤波器
补偿滤波器
通带失真
阻带衰减
CIC decimator filter
compensate filter
pass band distortion
stop band attenuation
