| 一种改进型中频数字化正交解调结构 |
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| 引用本文： | 苗鑫,王丽华,洪韬.一种改进型中频数字化正交解调结构[J].电子技术应用,2010,36(8). |
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| 作者姓名： | 苗鑫 王丽华 洪韬 |
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| 作者单位： | 北京航空航天大学电子信息工程学院;中国电子科技集团公司第二十九研究所; |
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| 摘 要： | 提出了一种改进型中频数字化正交解调结构,通过在现场可编程门阵列内部对采样数据流拆分后,分路进行数字解调的方法,大幅降低了现场可编程门阵列的内核工作频率。解决了中频数字接收机使用超高速A/D转换器时,对可编程门阵列内核频率要求过高的问题。详细介绍了新结构的组成和工作原理,并使用SIMULINK对新结构建模和仿真,验证了其可行性。
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| 关 键 词： | 数字正交解调 现场可编程门阵列 中频数字接收机 |
An improved IF digital quadrature demodulation structure |
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| MIAO Xin,WANG Li Hua,HONG Tao.An improved IF digital quadrature demodulation structure[J].Application of Electronic Technique,2010,36(8). |
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| Authors: | MIAO Xin WANG Li Hua HONG Tao |
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| Affiliation: | MIAO Xin1,WANG Li Hua2,HONG Tao1(1.Department of Electronic and Information Engineering,Beihang University,Beijing 100191,China,2.The 29th Institute of China Electronics Technology Group Corporation,Chengdu 610036,China) |
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| Abstract: | An improved IF digital quadrature demodulation structure is proposed,which reduces the core operating frequency of the FPGA significently by split the sampling data flow and demodulation separately.The problem of excessively high requirement of the FPGA core-operating frequency when the high-speed A/D converter is used in an IF digital receiver is sloved.In this article,the composition and the principle of the improved structure is introduced,and the feasibility is verified by modeling and simulation in Sim... |
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| Keywords: | digital quadrature demodulation FPGA IF digital receiver |
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