基于DDS技术的随机频率信号发生器  

Signal generator of stochastic frequency based on DDS technology

作　　者：赵伟[1] 黄秀节[1] 雷国伟[2] 

机构地区：[1]集美大学诚毅学院,厦门361021 [2]集美大学理学院,厦门361021

出　　处：《电子测量技术》2010年第1期61-63,共3页Electronic Measurement Technology

摘　　要：介绍一种采用单片机STC89C52控制直接数字合成(DDS)芯片AD9850的随机频率信号发生器。信号发生器是目前大学物理和电子实验室必备的电子测量仪器,因部分实验需要用到未知信号源,故介绍一种可产生频率随机、频率范围宽、波形稳定的正弦波和方波,为大学物理和电子实验教学提供未知信号源。在计算机控制下,该信号发生器可为电子测量和科研工作提供高分辨率的信号源。该信号发生器设计思路简单、性能稳定,可广泛应用于日常的实验教学和科研工作中。This design is based on the Direct Data Frequency Synthesis （DDS） technology, and microcomputer STC89C52 is used to control the AD9850, for generating signal of Stochastic Frequency. Signal generator is one of the most important instruments for the lab of physical and electronical. For the demand of unknown signal of some experiments, this paper introduce a generator, which can offer unknown signal for physical experiment and electronical experiment. The signal＇s frequency will appear randomly in big range, whose waveform stable. Under personal computer control, it can provide a high resolution of signal for electronical measure and scientific research.

关 键 词：直接数字合成 信号发生器 频率随机 高分辨率 

分 类 号：TN742.1[电子电信—电路与系统]