摘要
简要介绍了DDS技术的基本原理,着重介绍了利用DDS技术来实现数字信号调制的几种全数字调制方案,并以速率为10Mbps的调制解调器为例,介绍了典型芯片CMOSDDS直接数字调制器AD7008的应用.
This paper briefly describes fundamental theory about Direct Digital Synthesizer technology,with emphasis on how to utilize DDS technology to realize several different Direct Digital Modulation schemes.And it illustrates the application of typical Direct Digital Modulator chip AD7008 in 10 Mbps Modem.