基于DSP Builder数字滤波器的FPGA设计

摘要

Field Programmable Gate Array (FPGA) devices is widely used in the field of digital signal processing, but it is complicated to design using VHDL or VerilogHDL. A method of designing IIR digital filter based on DSP Builder are pointed out. Then a 4-order low-pass ⅠIR digital filter was designed according to the process of Matlab/Simulink/DSP Builder/Quartus Ⅱ, and the practical test was finished based on SignalTap Ⅱ of Quartus Ⅱ software. The result shows the designed filter correct in function and good in performance.%现场可编程门阵列(FPGA)器件广泛应用于数字信号处理领域,而使用VHDL或VerilogHDL语言进行设计比较复杂.提出一种采用DSP Builder实现ⅡR数字滤波器的设计方案,按照Matlab/Simulink/DSP Builder/QuartusⅡ的设计流程,设计了一个4阶ⅡR低通数字滤波器,并通过QuartusⅡ软件中的嵌入式逻辑分析仪SignalTapⅡ对设计进行了硬件实时测试.结果表明,所设计的ⅡR数字滤波器功能正确,性能良好.