摘要
基于多速率信号处理原理,设计了用于下变频的CIC抽取滤波器,由于CIC滤波器结构只用到加法器和延迟器,没有乘法器,很适合用FPGA来实现,所以本文分析了CIC滤波器的原理,性能及影响参数,借助MATLAB的FDATool工具箱设计符合系统要求CIC滤波器,并利用Simulink结合具体的结构建模仿真,验证CIC滤波器性能是否达到要求,最后在FPGA上实现这个结构的CIC滤波器设计,并进行了模拟仿真,综合验证。
This article describes the design of a CIC filter based on the signal processing theory.Because of its structure only using the adder and the delay devices without multiplier,it is very suitable for FPGA to achieve the CIC filter.This article first analyses the theory,performance and impact parameters of the CIC filter.Then,design the CIC filter to meet the system requirements with the FDATool of MATLAB,and use simulink to set up a model and simulate to verify whether the performance of the CIC filter meets the requirements.In the end,we achieves the CIC filter of this structure with FPGA,and carries out the simulation,integrated authentication.
出处
《电子器件》
CAS
2010年第2期231-234,共4页
Chinese Journal of Electron Devices
基金
福建省教育厅项目资助(JA09006)
