基于DDS任意波形发生器的设计

Design and Implementation of the Arbitrary Waveform Generator Based on DDS

基于DDS原理，以CycloneII系列FPGA芯片EP2C8Q208C为平台，设计了实现任意波形发生器的系统硬件。结合DDS输出信号的特点，设计了两种低通滤波器来对输出信号进行滤波处理，并且在Labwindo/CVI平台上开发了系统的应用程序。该任意波形发生器可以产生正弦波、方波、三角波和锯齿波。

On the basis of the principle of DDS, the system hardware of achieving the arbitrary waveform generator （AWG） is de- signed by taking Cyclone II series chip EP2CSQ208C as the platform. Combining with the characteristics of DDS＇s output signals, the two kinds of low pass filter are designed to implement the filter processing for output signals and the application program for the user is developed on LabWindows/CVI platform as well. The AWG is able to generate sine wave, square wave, triangle wave and sawtooth wave as user＇s demands.