Efficient structures for wideband digital receiver  

作　　者：Wang Hong Lu Youxin Wang Xuegang Wan Yonglun 

机构地区：[1]Univ. of Electronic Science and Technology of China, Chengdu 610054, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2006年第3期483-486,共4页系统工程与电子技术（英文版）

基　　金：This project was supported by the National Defense I mportant Research Foundation of China(03413070506)

摘　　要：Digital receivers have become more and more popular in radar, communication, and electric warfare for the advantages compared with their analog counterparts. But conventional digital receivers have been generally considered impractical for bandwidth greater than several hundreds MHz. To extend receiver bandwidth, decrease data rate and save hardware resources, three novel structures are proposed. They decimate the data stream prior to mixing and filtering, then process the multiple decimated streams in parallel at a lower rate. Consequently it is feasible to realize wideband receivers on the current ASIC devices. A design example and corresponding simulation results are demonstrated to evaluate the proposed structures.Digital receivers have become more and more popular in radar, communication, and electric warfare for the advantages compared with their analog counterparts. But conventional digital receivers have been generally considered impractical for bandwidth greater than several hundreds MHz. To extend receiver bandwidth, decrease data rate and save hardware resources, three novel structures are proposed. They decimate the data stream prior to mixing and filtering, then process the multiple decimated streams in parallel at a lower rate. Consequently it is feasible to realize wideband receivers on the current ASIC devices. A design example and corresponding simulation results are demonstrated to evaluate the proposed structures.

关 键 词：digital receiver digital down-converter postpositional mixer structure least common multiple structure double frequency transfer structure. 

分 类 号：TN85[电子电信—信息与通信工程]