| 超宽带信号正交解调误差的分析及校正 |
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| 引用本文： | 刘光平,黎向阳,梁甸农,周智敏.超宽带信号正交解调误差的分析及校正[J].国防科技大学学报,1999,21(4):67-70. |
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| 作者姓名： | 刘光平 黎向阳 梁甸农 周智敏 |
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| 作者单位： | 国防科技大学电子技术系!长沙410073 |
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| 摘 要： | 在超宽带相参接收系统中，正交解调的 Ｉ、 Ｑ 两路输出的幅度和相位的不一致性以及直流偏置分量会严重影响系统的性能。本文就超宽带信号的正交解调误差对信号处理的影响进行了分析，提出了一种幅相特性不一致的校正方法，并给出了计算机仿真的结果。
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| 关 键 词： | 超宽带 信号处理 正交解调 误差校正 |
| 收稿时间： | 1998/12/1 0:00:00 |
The Analysis and Correction of Quadrature Demodulation Errors of Ultra-Wide-Band Signal |
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| Liu Guangping,Li Xiangyang,Liang Diannong and Zhou Zhimin.The Analysis and Correction of Quadrature Demodulation Errors of Ultra-Wide-Band Signal[J].Journal of National University of Defense Technology,1999,21(4):67-70. |
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| Authors: | Liu Guangping Li Xiangyang Liang Diannong and Zhou Zhimin |
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| Institution: | Department of Electronic Technology, NUDT, Changsha, 410073;Department of Electronic Technology, NUDT, Changsha, 410073;Department of Electronic Technology, NUDT, Changsha, 410073;Department of Electronic Technology, NUDT, Changsha, 410073 |
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| Abstract: | In the receiving system of Ultra Wide Band (UWB) coherent receiver, the amplitude and phase unbalances and DC offsets of in phase and quadrature channels might affect the performance of the system. In this paper, the affection of imbalances and DC offsets of I/Q demodulators to signal processing are analyzed. One method of calibrating of amplitude and phase imbalances is introduced and the result of computer simulation is given. |
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| Keywords: | ultra wide band signal processing quadrature demodulation error correction |
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