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Analysis of Phase Truncation Based on Pseudo Interleaving of Multiple DDSs |
LIU Ke,TIAN Shu-lin,XIAO Yin-dong |
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China |
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Abstract The principle of pseudo interleaving of multiple DDSs and spectrum expressions with ideal parameters are analyzed.The model of pseudo interleaving of multiple DDSs with phase truncation is established.Based on the model,the distribution and amplitude of spur caused by phase truncation are discussed and analyzed.Then some important conclusions are drawn and proved by simulation,which can provide theoretical supports for spurious performance evaluation and parameter selection in design signal source or clock generator based on pseudo interleaving technique.
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[1]Okawara H.Analysis of Pseudo-Interleaving AWG[C]// IEEE International Test Conference, Austin, 2005.
[2]田书林,周鹏,刘科.基于分相存储和多DAC伪插值的高速波形合成方法[J].电子测量与仪器学报,2009,23(4):38-42.
[3]Nicholas H T,Samueli H.An analysis of the output spectrum of direct digital frequency synthesizers in the presence of phase-accumulator truncation[C]//41st Annual Control Symposium on Frequency Control,Philadelphia,1987.
[4]张玉兴,彭清泉.相位舍位对DDS 谱分布的影响[J].电子科技大学学报,1997, 28(4): 137-142.
[5]赵正敏.相位截尾对DDS 输出谱影响的分析与计算[J].东南大学学报,2000,30(1):141-145.
[6]刘科,田书林,肖寅东.基于伪插值的信号源幅频特性补偿方法研究[J].电子测量与仪器学报, 2009, 23(7):12-16.
[7]Angrisani L,D′Arco M.Modeling timing jitter effects in digital-to-analog converters[J].Instrumentation and Measuremen,2009,58(2):330-336.
[8]吴加政,苏新彦.远场涡流无损检测系统的DDS信号发生器设计[J].计量学报,2010,31(5):408-411. |
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