基于带通采样定理的高效ADC系统研究  

Research on High Efficiency of ADC System Based on Band-pass Sampling Theorem

作　　者：李辉[1] 毕大平[1,2] 程犇[1] 

机构地区：[1]电子工程学院安徽省电子制约技术重点实验室,合肥230037 [2]电子工程学院,合肥230037

出　　处：《舰船电子工程》2011年第3期98-100,共3页Ship Electronic Engineering

摘　　要：目前对射频信号进行A/D转换存在很大难度,主要采用多片A/D器件并行使用,实现高速数据采集。带通采样技术含有同时调制信号和降低信号速率两种作用,鉴于此前端设计一种基于带通采样定理的SHA抽取器,后端加入表决系统,提出一种基于带通采样定理的高效ADC系统,经理论分析该结构切实可行,对于降低数据采样率和提高数据转换效率有一定的借鉴意义。It is difficult to sample directly radio frequency signal because of lower capability of ADC now.In order to remove it,we use several ADC chip through side by side.Band-pass sampling theorem can modulate signal and also have lower speed of signal.So a kind of SHA model based on band-pass sampling theorem is presented,and add a judgment system,we call this system is based on band-pass sampling theorem of ADC system.The structure and effectiveness are proved.It is useful for lower speed of sampling and improving the effect ness of transmission.

关 键 词：带通采样 QMF ADC系统 

分 类 号：TN914[电子电信—通信与信息系统]