基于AD9914宽带线性调频源的设计及实现

Design and realization of a broadband microwave frequency source

介绍了一种基于ADI公司最新器件AD9914设计的宽带微波中频线性调频源,其瞬时工作带宽超过1 000 MHz,克服了国内研究处于200 MHz^400 MHz带宽的技术难题。同时,提出了一种利用DDS可编程特性对信号的相位进行分段补偿从而获得高边带抑制比的方法。

This paper introduces a latest broadband microwave frequency source of linear frequency modulation based on AD company＇ s AD9914, the instantaneous working bandwidth more than 1 000 MHz, overcome the domestic research in the 200 MHz to 400 MHz bandwidth technology bottleneck.At the same time, this paper proposes a feature of using programmable DDS to the phase of signal is piecewise compensation and then the method to obtain high sideband suppression ratio.