基于DDS的调频步进毫米波前端的实现

Realization of A Stepped FM Millimeter Wave Front End Based on DDS

文中给出了一种基于 DDS 的调频步进毫米波前端的设计,重点讨论了调频步进信号和高稳定毫米波本振信号的实现方法,给出了实现调频步进毫米波前端的框图。在不增加毫米波前端复杂程度的前提下,基于 DDS 和 PLL 技术可以产生多种形式的雷达信号,说明设计具有很好的灵活性。文中还给出了相应的硬件框图、软件流程图,并对实际设计的前端进行了调试,给出了实测结果。

A design of stepped FM millimeter wave front-end based on DDD technique is presented in this paper,genera- tion and realization of stepped FM signal and high stable millimeter wave local oscillator are mainly discussed,and the block diagram of the stepped FM millimeter wave front-end is presented.Multiple waveform can he generated with DDS and PLL techniques without increase the complexity and cost of the front-end system,which proves the very great feasi- bility of the design.The involved hardware and soft configuration is presented,the designed front-end was tested and the results is presented.