一种基于单片机和DDS技术的信号源设计

摘要

The principle of direct digital synthesizer(DDS)technology is introduced briefly in this paper. A design scheme of a signal source based on AD9832 and 80C51 MCU is proposed. The hardware interface design and partial software codes of the signal source are discussed in this paper. The testing results are offered. The type of signal source,under control of soft-ware,is easy to be modulated,and has high accuracy and a bright application prospect.%简单介绍了直接数字频率合成（DDS）技术的原理，提出一种基于DDS芯片AD9832和51单片机的信号源设计方案。讨论了频率源的硬件接口设计及部分软件代码，并给出了测试结果。该类型信号源精度高，控制方便且容易实现FSK等调制，具有非常广阔的应用前景。