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记忆多项式数字预失真线性化逆E类功放 被引量：4

Linearization for Inverse Class-E RF Power Amplifier by Memory Polynomial Digital Predistortion
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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。 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 be achieved,so that this inverse class-E amplifier can work both with high linearity and high efficiency.
作者 刘友江 曹韬 周邦华 周劼 刘以农
机构地区 清华大学工程物理系 中国工程物理研究院电子工程研究所
出处 《微波学报》 CSCD 北大核心 2011年第3期79-82,共4页 Journal of Microwaves
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 inverse Class-E power amplifier digital predistortion memory polynomial high efficiency linearization
分类号 TN722.75 [电子电信—电路与系统]
  • 相关文献

参考文献6

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二级参考文献11

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共引文献7

同被引文献32

  • 1艾渤,钟章队,朱刚,许荣涛,丁建文.放大器预失真系统中的环路延迟估计[J].系统仿真学报,2007,19(19):4487-4489. 被引量：6
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  • 5Mury T, Xiao M, Gardner P. Digital baseband predistor- tion based linearized broadband inverse Class-E power amplifier[ J]. IEEE Microwave Theory and Techniques, 2009, 57 ( 2 ) : 323-328.
  • 6Jeffrey S W, Stewart S T, David J A. A class-G supply modulator and class-E PA in 130nm CMOS [ J]. IEEE Solid-State Circuits, 2009,44 ( 9 ) : 2339 -2347.
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  • 10Ding L,Zhou G T,Morgan D R,et al.A robust digital baseband predistorter constructed using memory polynomials. IEEE Transactions on Communications . 2004

引证文献4

二级引证文献3

微波学报
2011年 第3期

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