| 自适应预失真射频功率放大器线性化 |
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| 引用本文： | 贾建华,刘洋.自适应预失真射频功率放大器线性化[J].同济大学学报(自然科学版),2005,33(10):1377-1379. |
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| 作者姓名： | 贾建华 刘洋 |
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| 作者单位： | 同济大学,信息与通信工程系,上海,200092 |
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| 摘 要： | 提出了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，通过自适应检测和自适应预失真控制，有效抑制临信道频谱再生，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： | 射频信号 预失真线性化 互调失真 载波抵消 |
| 文章编号： | 0253-374X（2005）10-1377-03 |
| 收稿时间： | 04 22 2004 12:00AM |
| 修稿时间： | 2004-04-22 |
Adaptive Predistortion Radio Frequency Power Amplifier Linearization |
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| JIA Jian-hua,LIU Yang.Adaptive Predistortion Radio Frequency Power Amplifier Linearization[J].Journal of Tongji University(Natural Science),2005,33(10):1377-1379. |
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| Authors: | JIA Jian-hua LIU Yang |
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| Institution: | Department of Information and Control Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | This paper presents a new out-of-band signal 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 3rd and 5th inter-modulation distortions have been improved respectively by 8 dBc and 6 dBc after adaptive detection and adaptive distortion control. |
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| Keywords: | radio frequency signal predistortion linearization intermodulation distortion carrier cancellation |
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