基于FPGA的数字上变频器设计与实现  

Design and Implementation of Digital up Converter Based on FPGA

作　　者：张鹏 肖恒[2] 沈锐龙 

机构地区：[1]北京102249 [2]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2016年第3期50-52,62,共4页Communication Countermeasures

摘　　要：数字上变频器是软件无线电的核心器件之一,其功能是增加基带信号采样率并把其搬移到载波频率上。设计实现了一种采用以多相数控振荡器(NCO)作为数字本振的正交混频技术,及可变整数倍内插技术的数字上变频器。该构架提高了输出信号采样率。相比传统上变频内插结构,降低了滤波器工作频率,提高了数据吞吐率,具有实时性强、易实现等优点,更具有通用性。Digital up converter （DUC） is one of the key components in software defined radio （SDR）, Its main function is to increase the samphng rate of the baseband signal and shift it to carrier frequency. This paper pre- sents a digital up converter which uses the multiphase NCO （voltage controlled oscillator） ~LS the orthogonal fre- quency mixing technique, and combines with the variable integer interpolation technique. The architecture im- proves the sampling rate of the output signal. Compred with the traditional frequency conversion interpolation structure,reduce the frequency of the filter, improve the data throughput rate, has the advantages of strong re- al-time, elsy to realize, and more universal.

关 键 词：数字上变频器 多相NCO 内插 正交混频 FPGA 

分 类 号：TN773[电子电信—电路与系统]