一种基于FPGA产生正弦扫频信号的方法  

A method of generating sine sweep signal based on FPGA

作　　者：卢峥 李坤贺 曾熠 LU Zheng;LI Kun-he;ZENG Yi(Automation Research Institute of China South Industries Group,Mianyang 621000,China)

机构地区：[1]中国兵器装备集团自动化研究所,四川绵阳621000

出　　处：《电子设计工程》2018年第13期168-171,176,共5页Electronic Design Engineering

摘　　要：本文针对设备数字化过程中常用的直接数字频率合成技术,介绍了一种基于FPGA产生正弦扫频信号的方法,并阐明了该方法所具备的优势。结合TI DAC5681芯片,较为详细的介绍了XILINX FPGA DDS IP core的实现流程和方法,并通过逻辑控制实现扫频信号多个参数的设定,同时对最终的DAC输出信号进行了简要的性能分析。结果表明:该方法稳定可靠,设计输出的模拟信号性能良好,可为FPGA产生扫频信号提供较好的参考。In this paper,a method of generating sine sweep signal based on FPGA is introduced,and the advantage of this method is explained in the light of the direct digital frequency synthesis technology which is often used in the process of equipment digitalization. With the TI DAC5681 chip,this paper introduces the process and method of XILINX FPGA DDS IP core＇s realization,sets sweep signal＇s parameter with the logic control,and analyses the performance of the DAC output signal. The result shows that the method is stable and reliable,and the designed analog signal has good performance,which can provide a good reference for sweep signal produced by FPGA.

关 键 词：设备数字化 直接数字频率合成 正弦扫频信号 DAC5681 

分 类 号：TN91[电子电信—通信与信息系统]