摘要
介绍了ADI公司具有内部调制功能的高速DDS器件AD9957的特点与应用,并提出了一种全新的高速调制信号源设计方案,给出了硬件结构框图和软件流程,详细介绍了系统工作原理。实践证明,输出正弦波最高频率达400 MHz,调制波调制速度可达1 MHz。
The features and applications of AD9957 are introduced, AD9957 manufactured by Analog Devices,Inc ,it functions as a I/Q modulator, and a new design of hign speed modulation signal source based on AD9957 was put forward.It＇s proved that the maximal frequency of sine wave can get up to 400MHz, and the modulation speed can achieve 1MHz.
出处
《国外电子元器件》
2007年第7期39-41,共3页
International Electronic Elements
