| 记忆多项式数字预失真线性化逆E类功放 |
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| 引用本文： | 刘友江,曹韬,周邦华,周劼,刘以农.记忆多项式数字预失真线性化逆E类功放[J].微波学报,2011,27(3):79-82. |
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| 作者姓名： | 刘友江 曹韬 周邦华 周劼 刘以农 |
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| 作者单位： | 中国工程物理研究院电子工程研究所,绵阳,621900 |
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| 摘 要： | 采用记忆多项式模型的数字预失真器,用于线性化逆E类射频功率放大器,从而获得具有高线性和高效率的射频放大系统,使得开关型的逆E类功率放大器可以适用于具有非恒包络的调制信号的发射。文中设计了一个工作于S频段的具有10W饱和功率的逆E类功率放大器,以具有5MHz信号带宽的单载波WCDMA信号作为测试信号,使用记忆多项式的预失真器对其进行线性化。实验表明,该记忆多项式预失真器能够很好地抑制逆E类功放的动态非线性引起的带外寄生频谱,可以使逆E类功放同时工作于高线性和高效率状态。
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| 关 键 词： | 逆E类功率放大器 数字预失真 记忆多项式 高效率 线性化 |
Linearization for Inverse Class-E RF Power Amplifier by Memory Polynomial Digital Predistortion |
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| LIU Youjiang,CAO Tao,ZHOU Banghu,ZHOU Jie,LIU Yinong.Linearization for Inverse Class-E RF Power Amplifier by Memory Polynomial Digital Predistortion[J].Journal of Microwaves,2011,27(3):79-82. |
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| Authors: | LIU Youjiang CAO Tao ZHOU Banghu ZHOU Jie LIU Yinong |
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| Affiliation: | LIU You-jiang1,2,CAO Tao2,ZHOU Bang-hua2,ZHOU Jie2,LIU Yi-nong1(1.Department of Engineering Physics,Tsinghua University,Beijing 100084,China,2.Institute of Electronic Engineering,China Academy of Engineering Physics,Mianyang 621900,China) |
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| Abstract: | This paper proposes to design a digital predistorter using memory polynomial to linearize a high efficiency inverse class-E RF power amplifier,which operates as a switch and exhibits very severe nonlinearity.The inverse class-E amplifier is designed to operate at S-band with 10W saturated output power.The excitation for the amplifier is a one-carrier WCDMA signal with 5MHz bandwidth.With digital predistortion linearization,experimental results show a high degree of spectral suppression for out-of-band can b... |
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| Keywords: | inverse Class-E power amplifier digital predistortion memory polynomial high efficiency linearization |
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