2010•Keisou gijutsuRequires access

Design and Completion for Waveform Generator Based on DDS

Xinrong Zhang

Abstract

The system of arbitrary waveform generator and its software design based on direct digital synthesizer(DDS) technology have been discussed in detail.A theoretical analysis of the system performance is also given.The multi-waveform generator adopts direct digital frequency,or DDS as the center,which is controlled by AT89C51 to output waveform.Then,it can preset up frequency and step to adjust the step of voltage output frequency.This system has features of compact module,simple circuit,powerful functions and flexible expansion.Digital signal are used to overcome the shortcomings of analog signal,that is,analog signal have large amount of redundancy and are not easy to deal with.The system can run reliably in practice.

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Key concepts: Waveform, Signal generator, Arbitrary waveform generator, Direct digital synthesizer, Redundancy (engineering), Computer science, Electronic engineering, Function generator