基于DDS技术正弦信号发生器的设计  

Design of Sine Signal Generator Based on DDS

作　　者：钱永青[1] 

机构地区：[1]中南民族大学电子信息工程学院,湖北武汉430074

出　　处：《现代电子技术》2008年第21期104-105,108,共3页Modern Electronics Technique

摘　　要：为了能够方便地产生波形平滑、频率稳定的正弦信号波形,提出了一种基于DDS技术的正弦信号发生器的设计方法。介绍了DDS技术在波形产生功能电路中的应用,并对FPGA实现DDS功能做了具体的说明。介绍了DDS技术的基本原理,论述了基于FPGA实现正弦/余弦信号发生器和32位序列信号发生器的设计方案。最后,实验结果表明:采用该方法设计的正弦波形发生器输出的波形与传统的正弦波形发生器相比,具有波形平滑、波形稳定度高、频率稳定度和分辨率高等诸多优点。To produce the smooth waveform with the stable frequency,this paper presents a design method of sine signal generator＇s function circuit which is based on the DDS theory. It mainly introduces the application of DDS technology in the waveform generator＇s circuit and shows the principle of designing a DDS chip with FPGA,and the process of sin/cos and 32 sequence signal generator is treated. It is obvious to see that waveform generated by sine signal generator has some advantages, such as smooth and stable waveform,stable frequency and high resolution.

关 键 词：正弦信号发生器 直接数字频率合成 现场可编程逻辑器件 数模转换 

分 类 号：TN914[电子电信—通信与信息系统]