| 基于数据复制和数字上变频的高速信号的产生 |
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| 引用本文： | 刘章文,卢朝政,张生帅,鲜海鹏.基于数据复制和数字上变频的高速信号的产生[J].电子技术应用,2012,38(8). |
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| 作者姓名： | 刘章文 卢朝政 张生帅 鲜海鹏 |
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| 作者单位： | 中国工程物理研究院应用电子学研究所高功率微波技术实验室,四川绵阳,621900 |
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| 摘 要： | 利用IQ数字上变频器AD9957,将高速DSP产生的基带信号上变到中频,再用混频器将中频变到需要的微波频段。对于基带信号的产生,高速存储器的数据复制和数字上变频技术是关键。对杂散和杂散抑制进行了分析。经过测试,本系统能够产生单音、多音和线性调频信号,调频中心频率达4.3 GHz,带宽大于10 MHz。
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| 关 键 词： | DSP FPGA 存储器复制技术 正交数字上变频 |
Realization of high speed digital signal generation based on the data repreplicate and digital upconverter |
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| Liu Zhangwen
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Lu Chaozheng
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Zhang Shengshuai
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Xian Haipeng.Realization of high speed digital signal generation based on the data repreplicate and digital upconverter[J].Application of Electronic Technique,2012,38(8). |
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| Authors: | Liu Zhangwen Lu Chaozheng Zhang Shengshuai Xian Haipeng |
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| Abstract: | By using I/Q quadrature digital upconverters(QDUCs),the base-band signal,created by using high speed DSP,is converted to intermediate frequency (IF) signal,and the IF signal is converted to suited microwave band.The high speed memory repreplicate and QDUCs techeque is the key to the base-band signal created.Spur and Spur restrain are analyzed.The system can generate single-tone,mult-tone,noise and linear frequency modulation(LFM) signals and LMF's center frequency and band is com to 4.3 GHz and more than 10 MHz respectively. |
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| Keywords: | DSP FPGA memory repreplicate techeque quadrature digital upconverters |
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