给出了基于FPGA的IIR数字滤波器的设计和实现方法。首先，用双线性变换法设计出巴特沃兹数字带通滤波器的相关参数；其次，利用Matlab软件对所设计的滤波器进行了仿真分析；最后，利用Quartus II软件进行了模块设计和功能仿真。实验结果证明了该方法的有效性。%An approach for the design and the implementation of IIR digital filter based on FPGA is proposed.Firstly,the parameters of Butterworth band-pass filter are computed by means of bilinear transformation method.Secondly,simulation analysis on the filter is carried out through Matlab software.Final y,module design and functional simulation are executed using Quartus II.Experiment results verify its effectiveness.
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