摘要
本文介绍了DDS的基本原理以及DDS芯片AD9852的功能特点。详细介绍了一种基于单片机和DDS的频率源电路的软硬件实现方案。利用单片机AT89C51控制DDS芯片AD9852,产生了一个低相位噪声的信号。在进行软硬件设计过程中,总结出了产生低相噪DDS信号的一些注意事项,对设计低相噪DDS信号产生电路有很大的帮助。
In the paper, the principle of DDS and the characteristics of DDS chip AD9852 are introduced. The design method of a frequency source circuit based on MCU and DDS is presented. By using MCU chip AT89C51 to control DDS chip AD9852, a signal with low phase noise is obtained. Some points to get optimum phase noise performance are given. The conclusion is useful for low phase noise DDS circuit design.
出处
《微波学报》
CSCD
北大核心
2007年第B08期148-151,共4页
Journal of Microwaves
