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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >Wideband high-efficiency linearized PA design with reduction in memory effects and IMD3
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Wideband high-efficiency linearized PA design with reduction in memory effects and IMD3

机译：宽带高效线性化功率放大器设计，可减少记忆效应和IMD3

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摘要

An analytical method is proposed to reduce the memory effects and third-order intermodulation distortions for improving the linearity of wideband power amplifier (PA). An excellent linearity can be obtained by reducing the second-harmonic output power levels and reducing the envelope voltage components in the megahertz range. An improved wideband Chebyshev low-pass matching network including the bias network is analyzed and designed to validate the proposed method. The measured results indicate that a wideband high-efficiency linearized PA is realized from 1.35 to 2.45 GHz (fractional bandwidth = 58%) with power added efficiency of 60-78%, power gain of 10.8-12.3 dB, and output power of 40.0-41.2 dBm. For a 20 MHz LTE modulated signal, the adjacent channel leakage ratios (ACLRs) of the proposed PA with digital pre-distortion (DPD) linearization are -55.7 similar to -53.9 dBc across 1.5-2.4 GHz at an average output power of 32.4-33.6 dBm. For a 40 MHz two-carrier LTE modulated signal, the ACLRs of the proposed PA with DPD linearization are -51.1 similar to -48.2 dBc at an average output power of similar to 30.5 dBm in the frequency range from 1.5 GHz to 2.4 GHz.
机译：提出了一种分析方法，以减少存储效应和三阶互调失真，从而改善宽带功率放大器（PA）的线性度。通过降低二次谐波输出功率水平并降低兆赫兹范围内的包络电压分量，可以获得出色的线性度。分析并设计了一种改进的包括偏置网络的宽带切比雪夫低通匹配网络，以验证该方法的有效性。测量结果表明，在1.35至2.45 GHz（分数带宽= 58％）范围内实现了宽带高效线性化PA，功率附加效率为60-78％，功率增益为10.8-12.3 dB，输出功率为40.0- 41.2 dBm。对于20 MHz LTE调制信号，建议的具有数字预失真（DPD）线性化功能的PA的相邻信道泄漏比（ACLR）为-55.7，类似于1.5-2.4 GHz上的-53.9 dBc，平均输出功率为32.4- 33.6 dBm。对于40 MHz的两载波LTE调制信号，在1.5 GHz至2.4 GHz的频率范围内，具有DPD线性化功能的拟议PA的ACLR为-51.1类似于-48.2 dBc，平均输出功率为30.5 dBm。

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  • 作者

    Du Xuekun; You Chang Jiang; Zhao Yulong; Li Xiang; Helaoui Mohamed; Cai Jingye; Ghannouchi Fadhel M.;

  • 作者单位

    Univ Elect Sci & Technol China, Chengdu 611731, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Chengdu 611731, Sichuan, Peoples R China;

    Univ Calgary, Dept Elect & Comp Engn, Intelligent RF Radio Lab, Calgary, AB T2N 1N4, Canada;

    Univ Calgary, Dept Elect & Comp Engn, Intelligent RF Radio Lab, Calgary, AB T2N 1N4, Canada;

    Univ Calgary, Dept Elect & Comp Engn, Intelligent RF Radio Lab, Calgary, AB T2N 1N4, Canada;

    Univ Elect Sci & Technol China, Chengdu 611731, Sichuan, Peoples R China;

    Univ Calgary, Dept Elect & Comp Engn, Intelligent RF Radio Lab, Calgary, AB T2N 1N4, Canada;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Active circuits; power amplifiers;

    机译：有源电路;功率放大器;

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