基于DDS技术的高精度数控信号源设计  

Design of High Precision Signal Source Controlled by Digital Signal Bases on DDS Technology

作　　者：周遐[1] 金瑞[1] 曹云川[1] 

机构地区：[1]昆明冶金高等专科学校,云南昆明650033

出　　处：《昆明理工大学学报（理工版）》2009年第5期50-53,共4页Journal of Kunming University of Science and Technology(Natural Science Edition)

摘　　要：一种采用DDS技术的新型高精度数控信号源,可输出正弦波、方波和三角波.系统中输出波形的频率采用数控方式,可实现对频率的逐赫兹调节,频率精度优于0.1 Hz,最高输出频率可达70MHz左右.与传统信号源相比,本设计具有输出波形质量好、频率精度和稳定性高、频率范围宽等优点.设计方案简洁,易于实现.Based on DDS technology, this design is a new high precision signal source controlled by digital signal, which can produce sine wave, quadrate wave and trigonal wave. In this system, the frequency of deferent wave is controlled by digital signal, therefore it can actualize adjusting frequency every Hz, with an precision of frequency less than 0.1 Hz and the highest deferent frequency being 70 MHz. Compared with traditional signal sources, this design is proved to enjoy a better quality, higher precision and stability, as well as a wider range of frequency in its deferent wave. The simplicity and feasibility of this design is finally pointed out.

关 键 词：DDS 高精度 信号源 单片机 

分 类 号：TN741[电子电信—电路与系统]