基于JESD204B的射频信号高速采集系统设计  

Design of High-Speed Acquisition System of RF Signal Based on JESD204B

作　　者：和爽 王红亮[1] HE Shuang;WANG Hongliang(National Key Laboratory For Electronic Measurement Technology,Key Laboratory of Instrumentation Science and Dynamic Measurement,Ministry of Education,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学电子测试技术国家重点实验室,仪器科学与动态测试教育部重点实验室,太原030051

出　　处：《电子器件》2020年第1期124-127,共4页Chinese Journal of Electron Devices

摘　　要：为了解决传统转换器传输接口传输速率低、抗干扰差、布局布线面积大等问题,设计了一种基于JESD204B的射频信号高速采集系统。系统对接收到的射频信号进行下变频处理,通过高速ADC对解调基带信号直接采样,采样后的数字基带信号通过自主设计的JESD204B接口逻辑传输至FPGA并缓存。测试结果表明,系统可实现1.0 Gsample/s采样率的直接采样,数据传输速率可达10 Gbit/s,且数据链路稳定可靠。In order to solve the problems of low transmission rate,poor anti-interference and large layout area of traditional converter transmission interface,a high-speed acquisition system of RF signal based on JESD204B is designed.The received RF signal is down-converted,the demodulated baseband signal is directly sampled by the high-speed ADC.The sampled digital baseband signal is transmitted to the FPGA through the self-designed JESD204B interface and buffered.Test results show that the system can achieve direct sampling with a sampling rate of 1.0 Gsample/s and a data transmission rate of up to 10 Gbit/s,and the data link is stable and reliable.

关 键 词：高速采集系统 JESD204B FPGA 正交解调 乒乓操作 

分 类 号：TN957[电子电信—信号与信息处理]