IIR低通滤波器的FPGA实现

IIR低通滤波器的FPGA实现IIR低通滤波器的FPGA实现翟晓东毕文艳庄乾起（中国矿业大学电工电子教学实验中心，江苏，徐州221008）摘要：本文介绍了IIR数字低通滤波器的基本原理，根据推导公式将”Z”域算法转换为整数的HDL语言算法，并探讨了计算过程的精度处理，最终将算法在FPGA器件上实现。关键词：IIR数字滤波器、CPLD/FPGA、VHDL语言TheimplementationofIIRLowpassDigitalFilterwithPFGAZhaiXiaodongBiWenyanZhuangQianqi(ExperimentCenterofElectricalandElectronicsTeachingofChinauniversityofminingandtechnology,XuzhouJiangsu(221008))Abstract:Thispaperintroducesprincipleofdigitallowpassfilter.Accordingtotheformulaweconvert“Z”fieldalgorithmtointegerfieldalgorithm,andbeencarriedoutthroughHardwareDescriptionLanguage.Inthewholeprocessweespeciallypayattentiontothecalculationprecision.Finallywecou