一种单片DDS构成的新型频率合成器

A new type of frequency synthesizer controlled by single chip computer

直接数字频率合成（ＤＤＳ）是一种新的频率合成技术。介绍了ＤＤＳ的工作原理和单片机控制的ＤＤＳ实用电路，给出了实验结果。经实践证明ＤＤＳ具有控制简单，频率分辨力高的特点。

Direct digital frequency synthesis technique is a new method of frequency Synthesis.Thepaper presents the principle and a detailed DDS design. We use 89c51 single chip computer as a controler.Through the study of this frequency synthesizer, we find that it used easily. At last this paper last gives theresult and sums up some experience of a DDS design.