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首页> 外文期刊>IEEE microwave magazine >Harvesting Wireless Power: Survey of Energy-Harvester Conversion Efficiency in Far-Field, Wireless Power Transfer Systems
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Harvesting Wireless Power: Survey of Energy-Harvester Conversion Efficiency in Far-Field, Wireless Power Transfer Systems

机译：收集无线功率：远场无线功率传输系统中能量-能量转换效率的调查

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摘要

The idea of wireless power transfer (WPT) has been around since the inception of electricity. In the late 19th century, Nikola Tesla described the freedom to transfer energy between two points without the need for a physical connection to a power source as an ?all-surpassing importance to man? [1]. A truly wireless device, capable of being remotely powered, not only allows the obvious freedom of movement but also enables devices to be more compact by removing the necessity of a large battery. Applications could leverage this reduction in size and weight to increase the feasibility of concepts such as paper-thin, flexible displays [2], contact-lens-based augmented reality [3], and smart dust [4], among traditional point-to-point power transfer applications. While several methods of wireless power have been introduced since Tesla?s work, including near-field magnetic resonance and inductive coupling, laser-based optical power transmission, and far-field RF/microwave energy transmission, only RF/microwave and laser-based systems are truly long-range methods. While optical power transmission certainly has merit, its mechanisms are outside of the scope of this article and will not be discussed.
机译：自电力诞生以来，无线电源传输（WPT）的想法就已经存在。在19世纪后期，尼古拉·特斯拉（Nikola Tesla）将自由地在两点之间转移而不需要物理连接电源描述为“对人类的头等大事”。 [1]。一个真正的能够远程供电的无线设备，不仅拥有明显的移动自由度，而且通过消除大电池的必要性，使设备变得更加紧凑。应用程序可以利用这种尺寸和重量的减少来增加诸如薄纸，柔性显示器[2]，基于隐形眼镜的增强现实[3]和智能尘埃[4]等概念的可行性，其中包括传统的点对点功能。点功率传输应用。自特斯拉开始工作以来，已经引入了几种无线电力传输方法，包括近场磁共振和电感耦合，基于激光的光功率传输以及远场RF /微波能量传输，仅基于RF /微波和激光系统是真正的远程方法。虽然光功率传输当然具有优点，但其机制不在本文讨论范围之内，因此将不予讨论。

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  • 来源
    《IEEE microwave magazine》 |2014年第4期|108-120|共13页
  • 作者

    Valenta C.; Durgin G.;

  • 作者单位

    Electro-optical Systems Laboratory, Georgia Tech Research Institute, Atlanta, Georgia 30318 USA|c|;

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