摘要
在继直接合成、锁相频率合成等传统的频率合成技术之后,直接数字合成技术,由于它具有频率分辨率高、带宽宽、转换时间短等诸多优点,如今已被广泛使用。为了满足外场试验对便携式信号发生器的需要,利用直接数字合成技术,通过ARM芯片STM32V8T6实现对DDS芯片AD9852的控制,设计了一个可以产生10 MHz频率内的正弦信号、调幅信号、调频信号、ASK及PSK信号的函数信号发生器。
After the traditional frequency synthesis technology such as direct synthesis and phase-locked frequency synthesis,the direct digital synthesis technology is used widely now,which has the advantages of high resolution,wide bandwith,and short conversion time.In order to meet the need of portable signal generator in outdoor experiments,a function signal generator is proposed.It uses direct digital synthesis technology and AD9852 DDS chip,which is controlled by ARM chip STM32V8T6.The function signal generator can generate sine signals,amplitude-modulated signals,frequency-modulated signals,amplitude shift keying signals and phase shift keying signals,and their frequency are between 0 to 10 MHz.
出处
《国外电子测量技术》
2011年第7期66-68,74,共4页
Foreign Electronic Measurement Technology
