基于FPGA的任意波形发生器设计与研究  

Research and Design of Arbitrary Waveform Generator based on FPGA

作　　者：张严[1] 洪远泉[2] 

机构地区：[1]广东商学院教育技术中心,广东广州512320 [2]韶关学院信息工程学院,广东韶关512005

出　　处：《现代电子技术》2011年第10期157-159,162,共4页Modern Electronics Technique

摘　　要：在此基于DDS技术进行任意波形发生器的研制。以单片机为控制核心,采用FPGA芯片EP1C3T144C8,通过使用相位累加器和波形ROM等模块实现DDS功能,可产生正弦波、方波、三角波与锯齿波等常规波形,而且能够产生任意波形,并通过键盘一一对应波形,从而满足研究的需要。最后给出系统产生的测试数据,并对影响频谱纯度的杂散与噪声产生的原因进行分析。The development of arbitrary waveform generator based on direct digital synthesis （DDS） technology is discussed in-this： paper, EP1C3T144C8 ：（FPGA chip）is adopted and SCM is taken as a cybernetics core in the design to realize ＋DDS function throUghphase accumulator and wayeform ROM. The generator can produce not only the conventional waveform such ＇as sine wave, Square wave,, triangle wave and sawtooth wave, but also the arbitrary waveform, tt can match the needed wave.by keyboard and meet the requtrement of the relative studies. The system testing data is given. The reason caused by stray and noise which influences the spectral purity is analyzed.

关 键 词：FPGA DDS 任意波形发生器 杂散 

分 类 号：TN919-34[电子电信—通信与信息系统]