DDS技术在高频信号发生器中的应用  

Design of High Frequency Signal Generator Based on AT89S51 and AD9850

作　　者：陈捷[1] 

机构地区：[1]湄洲湾职业技术学院,福建莆田351200

出　　处：《工业控制计算机》2010年第9期118-119,共2页Industrial Control Computer

摘　　要：DDS(Direct Digital Synthesizer)技术是一种用数字控制信号的相位增量技术,具有频率分辨率高、稳定性好、可灵活产生多种信号的优点。分析了DDS工作原理,以单片机AT89C52及DDS芯片AD9850为核心,采用直接数字合成技术完成高频信号发生器的设计。Direct Digital Synthesizer is a technology of phase increase under digital control,which has high resolution,strongly sta-bility and wide frequency range.The principle of DDS is analyzed in the thesis.Using direct digital synthesizer technology via single chip AT89C52 and AD9850 chip,a signal generator with high frequency is designed in this paper.The result shows the generator＇s will not deviate away after long time working.

关 键 词：直接数字合成 单片机 信号发生器 

分 类 号：TN741[电子电信—电路与系统]