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首页> 外文期刊>IEEE Transactions on Industrial Electronics >High Bandwidth Envelope Tracking Power Supply With Pulse Edge Independent Distribution Method
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High Bandwidth Envelope Tracking Power Supply With Pulse Edge Independent Distribution Method

机译：脉冲边沿独立分布方法的高带宽包络跟踪电源

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摘要

Switching-linear hybrid envelope tracking (SLH ET) power supplies can achieve both high efficiency and high bandwidth. However, the switching frequency is often required to be far higher than or at least equal to the envelope bandwidth. With the modulation methods advance, the increasing envelope bandwidth may lead to a too high switching frequency to implement. This paper proposes an SLH ET power supply, consisting of a multilevel converter and a linear amplifier connected in series. Based on the multicell configuration of the multilevel converter, a pulse edge independent distribution method is proposed, which can break the control pulses for the multilevel converter into independent rising and falling edges, and rebuild them with new sequences. It can not only reduce the switching frequency to 1 (n is an element of M of the envelope bandwidth but also extend the pulse widths to provide a more reliable and effective driving for high bandwidth applications. A prototype for 2 MHz sine-wave tracking, with 7-27-V output voltage and 90-W peak output power, is fabricated and tested. It is also verified by a 5- and a 10-MHz bandwidth communication envelope. The experimental results validate the proposed method.
机译：开关线性混合包络跟踪（SLH ET）电源可以实现高效率和高带宽。但是，经常需要开关频率远高于或至少等于包络带宽。随着调制方法的发展，增加的包络带宽可能会导致开关频率过高而无法实现。本文提出了一种SLH ET电源，它由一个串联的多电平转换器和一个线性放大器组成。基于多电平转换器的多单元配置，提出了一种与脉冲沿无关的分配方法，该方法可以将多电平转换器的控制脉冲分解为独立的上升沿和下降沿，并以新的顺序对其进行重建。它不仅可以将开关频率降低至1 / n（n是包络带宽M的一个元素，而且可以扩展脉冲宽度以为高带宽应用提供更可靠和有效的驱动。2 MHz正弦波的原型）制作并测试了具有7-27V输出电压和90W峰值输出功率的跟踪，并通过5MHz和10MHz带宽的通信包络进行了验证，实验结果验证了该方法的有效性。

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  • 来源
    《IEEE Transactions on Industrial Electronics》 |2019年第8期|5907-5917|共11页
  • 作者

    Xi Huan; Cao Juan; Liu Ning; Ruan Xinbo; Fang Zhi; Ji Baojian;

  • 作者单位

    Nanjing Tech Univ, Coll Elect Engn & Control Sci, Nanjing 211816, Jiangsu, Peoples R China;

    Nanjing Tech Univ, Coll Elect Engn & Control Sci, Nanjing 211816, Jiangsu, Peoples R China;

    Nanjing Tech Univ, Coll Elect Engn & Control Sci, Nanjing 211816, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Automat Engn, Nanjing 210016, Peoples R China;

    Nanjing Tech Univ, Coll Elect Engn & Control Sci, Nanjing 211816, Jiangsu, Peoples R China;

    Nanjing Univ Sci & Technol, Sch Automat, Nanjing 210094, Jiangsu, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Envelope tracking (ET); high bandwidth; power amplifier (PA); switching-linear hybrid (SLH);

    机译：信封跟踪（ET）;高带宽;功率放大器（PA）;切换 - 线性混合（SLH）;

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