基于DSPBuilder的DDS设计与实现

Design and Implementation of DDS Based on DSP Builder

DDS技术应用广泛,设计和实现DDS的方法有多种,随着EDA技术和FPGA器件的发展,应用FPGA实现DDS具有灵活性好、价格较低、研制周期短等优点。DSP Builder是Altera公司的系统级DSP开发软件,应用DSP Builder设计DDS,可根据DDS原理实现模块化设计,使设计更为直观和简化,结合Matlab软件的设计与调试功能,使系统仿真更为简便。将设计下载到硬件中运行,测试结果表明,应用DSP Builder设计DDS方案切实可行,输出波形频率范围较宽,波形稳定度和分辨率较高。

DDS has extensive applications, there are many approaches of designing and implementing DDS, with developments of the EDA technology and FPGA device,it is more easy, flexible and speedy,if using FPGA for DDS＇design and implementation. DSP Builder is an Altera Corporation＇s system class DSP design software, utilizing it for DDS,it becomes more easy and intuitionistic when simulating the design because of using Matlab. By downloading the design into FPGA for working,testing results indicates： using DSP Builder for DDS design is feasible, output frequency is comparative broad, output wave stabilization and frequency resolution are comparative high.