| 关于自适应预失真射频功率放大器线性化研究 |
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| 引用本文： | 贾建华,刘战胜. 关于自适应预失真射频功率放大器线性化研究[J]. 微波学报, 2005, 21(3): 48-50 |
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| 作者姓名： | 贾建华 刘战胜 |
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| 作者单位： | 同济大学电信学院信息与通信工程系,上海,200092 |
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| 摘 要： | 介绍新的带外信号检测方法和自适应模拟预失真线性化技术,并应用于CDMA直放站的5W自适应射频线性功率放大器.为了有效抑制临信道频谱再生,通过自适应检测和自适应预失真控制使输出信号的3阶和5阶交调失真分别改善8dBc和6dBc.
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| 关 键 词： | 预失真线性化技术 内部交调失真 对数检测器 幅度调制-幅度调制 幅度调制-相位调制 载波抵消 射频功率放大器 |
| 文章编号： | 1005-6122(2005)03-0048-03 |
| 修稿时间： | 2004-04-19 |
Investigation on Adaptive Predistortion RF Power Amplifier Linearization |
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| JIA Jian-hu,LIU Zhan-sheng. Investigation on Adaptive Predistortion RF Power Amplifier Linearization[J]. Journal of Microwaves, 2005, 21(3): 48-50 |
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| Authors: | JIA Jian-hu LIU Zhan-sheng |
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| Abstract: | This paper describes a new spectral regrowth detection method and linearization technology of adaptive analog predistortion, applied in 5 watts adaptive RF linearized power amplifier of CDMA repeater. To effectively suppress the spectral regrowth in the adjacent channels, the 3th and 5th intermodulation distortions are separately improved by 8 dbc and 6dbc after adaptive detection and adaptive distortion control. |
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| Keywords: | Predistortion linearization technology IMD Logarithmic detector AM-AM AM-PM Carrier cancellation RF power amplifier |
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