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A Survey on RF Energy Harvesting System with High Efficiency RF-DC Converters

  • Khan, Danial (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Basim, Muhammad (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Ali, Imran (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Pu, YoungGun (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Hwang, Keum Cheol (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Yang, Youngoo (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Kim, Dong In (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Lee, Kang-Yoon (Department of Electrical and Computer Engineering, Sungkyunkwan University)
  • Received : 2020.06.02
  • Accepted : 2020.06.15
  • Published : 2020.06.30

Abstract

Radio frequency (RF) energy harvesting technology have become a reliable and promising alternative to extend the lifetime of power-constrained wireless networks by eliminating the need for batteries. This emerging technology enables the low-power wireless devices to be self-sustaining and eco-friendly by scavenging RF energy from ambient environment or dedicated energy sources. These attributes make RF energy harvesting technology feasible and attractive to an extended range of applications. However, despite being the most reliable energy harvesting technology, there are several challenges (especially power conversion efficiency, output DC voltage and sensitivity) poised for the implementation of RF energy harvesting systems. In this article, a detailed literature on RF energy harvesting technology has been surveyed to provide guidance for RF energy harvesters design. Since signal strength of the received RF power is limited and weak, high efficiency state-of-the-art RF energy harvesters are required to design for providing sufficient DC supply voltage to wireless networks. Therefore, various designs and their trade-offs with comprehensive analysis for RF energy harvesters have been discussed. This paper can serve as a good reference for the researchers to catch new research topics in the field of RF energy harvesting.

Keywords

References

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