雷达科学与技术2017，Vol.15Issue(4)：443-448,6.DOI:10.3969/j.issn.1672-2337.2017.04.019
一种超宽带等效采样接收机的设计与实现
Design and Implementation of Ultra-Wideband Equivalent Sampling Receiver
吴兵 1夏浩淼 1李武建1
作者信息
- 1. 中国电子科技集团公司第三十八研究所,安徽合肥 230088
- 折叠
摘要
Abstract
It is hard to directly sample the ultra-wideband radar echoes due to its large bandwidth.The equivalent time sampling method is often used to carry out analog to digital conversion (ADC).Traditional equivalent sampling receivers are mostly based on changing the delay of ADC sampling clock to realize equivalent sampling.Due to the metastable state between sampling clock and trigger signal,the received da-ta is misaligned inevitably and the correction algorithm online or offline must be added.To solve this prob-lem,an ultra-wideband equivalent sampling receiver based on internal delay line of FPGA is designed.Based on the received echoes of high speed sample-and-hold and ADC,the equivalent sampling of ultra-wideband RF signal is realized without data misaligning when using the delay-tunable transmitting signal generating by FPGA to control the waveform generating system.The equivalent sampling rate is 12.8 GS/s and - 3 dB sampling bandwidth is 6.4 GHz,meeting the application requirements of UWB radar.关键词
等效采样/数字延迟线/数字接收机/采样保持器Key words
equivalent sampling/digital delay line/digital receiver/sample-and-hold分类
信息技术与安全科学引用本文复制引用
吴兵,夏浩淼,李武建..一种超宽带等效采样接收机的设计与实现[J].雷达科学与技术,2017,15(4):443-448,6.
