一类新型直接频率合成器的设计与实现

Design and Implementation of a New Type of Direct Frequency Synthesizer

直接频率合成器可以利用在军事国防等各个领域,但目前的直接频率合成器存在着运算速度慢以及噪声杂散过多的问题。为了解决这一问题文章利用改进型cordic算法结合改进型累加器技术,成功使得新型直接频率合成器的运算速度提高,杂散降低。最后文章应用xilinx公司的FPGA设计实现新型直接频率合成器,然后结合使用Matlab从杂散以及运算速度两个性能参数考证新型的直接频率合成器具有较好的噪声以及较好的运算速度。

Direct digital synthesizer can be used in military defense and other fields, now there is a problem that the direct frequency synthesizer exist the problem about lower speed and noise, too much stray and so on. In this paper, we improved algorithms cordic accumulator with improved accumulator technology, makes the new direct frequency synthesizer to speed and to low stray. Finally, we design new direct digital synthesizer using xilinx FPGA and then use Matlab to imporve that the new direct digital synthesizer has higher speed and lower stray.