基于AD9858定时信号源模块设计

定时及DDS信号源模块是将定时器和DDS信号源两个功能集成在一个模块中实现,能够完成定时信号和DDS信号的产生,并对DDS信号8倍频后,输出中心频率2.4GHz调频/调相信号。本设计采用多种方法较好的解决了模拟信号和数字信号相互影响的问题,保证了DDS输出稳定的调频信号,在实际工作中取得了良好的效果。

Design of Timer and Signal-Source Model Based on AD9858

Timer and DDS signal-source which are integrated by the timer module and DDS signal-source module are realized in one module. The production of timer signals and DDS signals are completed by this design, and the frequency modulation /phase modulation signal which frequency is 2.4GHz is produced after the 8 frequency multiplication of DDS signal. The design used several methods to solve the influence between the analog signals and digital signals. And this design can guarantee that DDS device output steady frequency-sweep signals. It get good purpose in practice work.