4.7 Article

Metamaterials and Metasurfaces for Wireless Power Transfer and Energy Harvesting

期刊

PROCEEDINGS OF THE IEEE
卷 110, 期 1, 页码 31-55

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPROC.2021.3127493

关键词

Metamaterials; Magnetic materials; Metasurfaces; Couplings; Permeability; Wireless communication; Wireless sensor networks; Antennas; metamaterials; metasurfaces; rectennas; wireless energy harvesting (WEH); wireless power transfer (WPT)

资金

  1. Engineering and Physical Sciences Research Council (EPSRC), U.K
  2. National Key Research and Development Program of China
  3. Royal Society, U.K

向作者/读者索取更多资源

This article reviews the use of metamaterials and metasurfaces for wireless power transfer and energy harvesting, showing their ability to enhance transmission and conversion efficiency. Metamaterials can optimize rectennas and improve the performance of energy harvesters as passive components.
A comprehensive review of metamaterials and metasurfaces for wireless power transfer (WPT) and wireless energy harvesting (WEH) is presented in this article. According to the features of the electromagnetic field from the source to the receiver, WPT is divided into nonradiative near-field technology and radiative (near and far-field) technologies. Many different and important designs are reviewed and compared. It is shown that metamaterials and metasurfaces can significantly improve the power transfer efficiency and operational distance for WPT systems. They can also improve the energy conversion efficiency of wireless energy harvesters by making the reception less sensitive to incident wave angle and polarization. A rectenna is a critical element for both WPT and WEH. It is shown that metamaterial-based rectennas can achieve a higher RF to dc conversion efficiency. Furthermore, metamaterials can also be used as either parasitic elements or loading components to improve WEH performance in terms of circuit size, beamwidth, and conversion efficiency. Future development directions and opportunities of metamaterials and metasurfaces for WPT and WEH are also proposed in this article.

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