一种雷达数字收发机设计  

Design of a Digital Transceiver for Radar

作　　者：倪文飞[1] 夏丹[1] 崔扬[1] NI Wenfei;XIA Dan;CUI Yang(Anhui Sun Create Electronics Co.,Ltd.,Hefei 230000,China)

机构地区：[1]安徽四创电子股份有限公司,安徽合肥230000

出　　处：《无线电工程》2021年第7期668-672,共5页Radio Engineering

摘　　要：针对设计一种雷达数字收发机的目的,采用模数转换器(Analog to Digital Converter,ADC)芯片通过204B协议传输采样数据,依据被采信号频率并结合科学论证,合理选择ADC采样频率,通过查找表灵活产生数字混频信号,利用数字模拟转换器(Digital to Analog Converter,DAC)实现模拟中频信号合成,验证了该设计实现雷达数字收发机的功能。结果表明,在减少硬件设计困难度的同时,极大地降低了逻辑运算开销,具有较强的实用价值,采用国产芯片为设备国产化提出了一种可行的途径。For the purpose of designing a radar digital transceiver,the Analog to Digital Converter(ADC)chip is used to transmit sampled data through the 204B protocol,and the ADC sampling frequency is reasonably selected according to the frequency of the sampled signal combined with scientific demonstration,and the digital mixing signal is flexibly generated through the lookup table.The Digital to Analog Converter(DAC)realizes the synthesis of analog intermediate frequency signals,which verifies the design can realize the function of radar digital transceiver.The results show that while reducing the difficulty of hardware design,it greatly reduces the logic operation overhead and has strong practical value.The use of domestic chips provides a feasible way for the localization of equipment.

关 键 词：数字收发 模数转换器 数字模拟转换器 数字下变频 

分 类 号：TN974[电子电信—信号与信息处理]