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Design of a high-efficiency 2.45-GHz rectenna for low-input-power energy harvesting

Hucheng Sun, Yong-Xin Guo, Miao He, Zheng Zhong

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

This letter presents a high-efficiency 2.45-GHz rectenna that can harvest low input RF power effectively. A new antenna with a simple structure and high gain of 8.6 dBi is proposed for the rectenna. The antenna is designed to directly match the rectifying circuit at 2.45 GHz and mismatch it at the second and third harmonics so that the use of bandpass filter between the antenna and rectifying circuit can be eliminated. The rectenna shows a maximum conversion efficiency of 83% with a load resistance of 1400 Ω. Furthermore, the overall conversion efficiency can remain 50% for the low, -17.2 dBm (corresponding power density 0.22 μW/cm 2) input power level. © 2012 IEEE.
Original languageEnglish
Article number6262453
Pages (from-to)929-932
JournalIEEE Antennas and Wireless Propagation Letters
Volume11
DOIs
Publication statusPublished - 2012
Externally publishedYes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

  • Antenna
  • energy harvesting
  • rectenna
  • rectifier

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