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  5. Research on Wideband DDC in Synthetic Instrument

Research on Wideband DDC in Synthetic Instrument

来源 :美国科研出版社 | 被引量 : 0次 | 上传用户：weiweixiao09
【摘 要】
：
This paper descnibes the technology of wideband digital downconverter(WDDC)for synthetic instruments(Sis).DDCs first mix the wideband signal with the local frequency generated by numerically controlle
【作 者】
：
Lianping GUO Shulin TIAN Zhigang WANG Junyi LOU 
【机 构】
：
School of Automation Engineering,UESTC,Chengdu,China
【出 处】
：
美国科研出版社
【发表日期】
：
2011年12期
【关键词】
：
digital downconverter(DDC) parallel structure numerically controlled oscillator( 
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　　This paper descnibes the technology of wideband digital downconverter(WDDC)for synthetic instruments(Sis).DDCs first mix the wideband signal with the local frequency generated by numerically controlled oscillator,and then filter the mixed signal with a low pass filter,finally the signal with lower frequencY range is acquired.The structure of parallel DDC and realization of NCOs in parallel DDC are introduced to meet the need of the processing speed of devices used for data processing.
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