This paper introduced the advantage and the operational principle of AD9857. It illustrates the application of AD9857, which bases the platform of DDS+DSP, in all digital DS-SS BPSK modulation.

• 摘要介绍数字正交上变频器AD9857的突出优点和工作原理，并分析其在基于DDS+DSP平台的全数字BPSK扩频调制中的应用。