| 直接正交上变频的边带与本振泄漏分析及优化设计 |
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| 引用本文： | 曹鹏,费元春.直接正交上变频的边带与本振泄漏分析及优化设计[J].兵工学报,2004,25(6):712-715. |
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| 作者姓名： | 曹鹏 费元春 |
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| 作者单位： | 北京理工大学信息科学技术学院,北京,100081;宁夏大学物理与电气学院;北京理工大学信息科学技术学院,北京,100081 |
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| 摘 要： | 本文分析了直接正交上变频无线发射机中的边带和本振泄漏问题,导出了调制信号和本振信号的幅度和相位不平衡度与发射机的边带和本振泄漏抑制能力之间的定量关系,并进行了仿真.基于最新的直接正交上变频器芯片,给出了直接正交上变频器优化设计的几项具体措施及其实验结果.
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| 关 键 词： | 通信技术 正交 直接变频 幅相不平衡 本振泄漏 |
AN ANALYSIS ON THE SIDEBAND AND CARRIER LEAKAGE AND OPTIMIZATION OF DIRECT QUADRATURE UP-CONVERTER |
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| Cao Peng,Fei Yuanchun.AN ANALYSIS ON THE SIDEBAND AND CARRIER LEAKAGE AND OPTIMIZATION OF DIRECT QUADRATURE UP-CONVERTER[J].Acta Armamentarii,2004,25(6):712-715. |
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| Authors: | Cao Peng Fei Yuanchun |
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| Affiliation: | Cao Peng *** Fei Yuanchun * |
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| Abstract: | This paper analyzed the issues about the sideband and local oscillator leakage of a direct quadrature conversion transmitter, educed the quantitative relationship of the amplitude and phase imbalance in the modulation signal as well as local oscillator signal and the sideband and local oscillator leakage, and simulated it. The paper also introduced several practical measures for the direct quadrature converter optimization, and demonstrated the experimental results based on the state-of-the-arts direct quadrature modulator. |
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| Keywords: | communication technique quadrature direct conversion amplitude and phase imbalance local leakage |
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