一种多相宽带线性调频信号发生器的设计与应用  

A Real Time Generation Method of Wideband Linear Frequency Modulation Signal

作　　者：梁晨 LIANG Chen(th Research Institute of China Electronics Science and Technology Corporation,Xi’an 710068,China)

机构地区：[1]中国电子科技集团公司第二十研究所,陕西西安710068

出　　处：《通信电源技术》2023年第8期31-35,共5页Telecom Power Technology

摘　　要：随着雷达信号处理技术的发展,对于宽带线性调频(Linear Frequency Modulation)信号发生器的需求也变得十分迫切。基于Xilinx公司的直接数字频率合成(Direct Digital frequency Synthesis,DDS)IP核和高速数模转换器(Digital-to-Analog Converter,DAC)的架构,设计了一种可实时切换参数的多相宽带线性调频信号发生器,并完成仿真和上板验证。经仿真和上板验证,该信号发生器能够根据任务要求实时切换线性调频信号的参数,生成的信号指标准确,实现方法可靠,具有一定的实用价值。With the development of radar signal processing technology,the demand for wideband Linear Frequency Modulation(LFM)signal generator has become very urgent.Based on the Direct Digital frequency Synthesis(DDS)IP core of Xilinx Company and the architecture of high-speed Digital-to-Analog Converter(DAC),a multi-phase wideband LFM signal generator with real-time switching parameters is designed,and the simulation and upper board verification are completed.The simulation and upper board verification show that the signal generator can switch the parameters of LFM signal in real time according to the task requirements,and the generated signal index is accurate and the implementation method is reliable,which has certain practical value.

关 键 词：直接数字频率合成(DDS)IP核 高速数模转换器(DAC) 实时参数切换 多相宽带线性调频信号 

分 类 号：TN925[电子电信—通信与信息系统]