Real-time wideband DDC based on parallel architecturein synthetic instrument

作     者：Guo Lianping Tian Shulin Wang Zhigang School of Automation Engineering University of Electronic and Science Technology of China Chengdu 610054 China 

会议名称：《Measurement Touch the World——IEEE 2011 10th International Conference on Electronic Measurement & Instruments(ICEMI’2011)》

会议日期：2011年

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

关 键 词：wideband digital IF process DDC phase difference quantization effects synthetic instruments 

摘      要：Restricted by the processing speed of device,bandwidth and filter performance of Wideband Digital IF Process are hard to achieve a *** this paper,to solving the problems during wideband digital IF process,a parallel processing architecture is presented to efficiently lower the sample rate and process cost through multiple channels of parallel *** paper deduces the digital down conversion technique principle,analyzes output phase difference of multiple Numerical Control Oscillator’s（NCO） output and error factor for reducing SNR,and provides the index distribution basis for the specific engineering ***,the correctness is verified by the experimental platform.