摘要
DDS(Direct Digital Synthesis)是一种新型的数字频率合成技术,该技术具有频率转换快、频率分辨率高等特点,得到了广泛的应用。本系统以单片机8751为控制核心,外接DDS芯片组成了智能化信号源,可以产生DC 100 MHz的高稳定正弦波、方波、三角波调幅波及扫频信号。输出稳定度、精度极高,适用于当代的通信系统和精密的高精度仪器。
Direct Digital Synthesis（DDS） is in recent to develop synthesis the technique. It has virtues such as the short time of talking frequency the conversion, the high rate of frequency distinguish, it is applied widely. This system is taking only MCU8751 as control core,is outside to receive DDS chip to form intelligent signal source, can produce triangle wave amplitude modulation, square wave and the high steady sine wave of DC- 100 MHZ to affect sweep signal. Export stability and precision apply to the present advanced communication systematic and accurate instrument of high accuracy.
出处
《现代电子技术》
2006年第24期148-149,151,共3页
Modern Electronics Technique
关键词
DDS
信号源
频率合成器
单元电路
硬件电路
DDS
signal source
frequency synthesizer
unit circuit
hardware circuit
