Far field wireless power transfer for IoT applications enabled by an ultra-compact and highly-efficient Huygens rectenna

Wei Lin, Richard W. Ziolkowski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Far field wireless power transfer technology is very attractive for the future Internet-of-Things (IoT) applications, realizing a betteryless and sustainable wireless system. An ultra-compact and highly efficient Huygens rectenna is introduced that is suitable for powering IoT devices with small footprint. The rectenna is the seamless integration of an ultra-compact Huygens antenna and a highly efficient rectifier circuit. The Huygens antenna consists of two metamaterial-inspired near field resonant parasitic (NFRP) elements as the Egyptian axe dipole (EAD) and a capacitively loaded loop (CLL). As an antenna, it exhibits the cardioid-shaped (Huygens) pattern and the peak realized gain at the resonant frequency 915 MHz reaches 4.58 dBi. As a rectenna, it shows an inductive impedance that conjugately matches to the capacitive value of the rectifier. The peak AC to DC conversion efficiency is up to 87.8%. The entire rectenna is designed on a single piece of PCB substrate with the ka value less than 1 (electrically small). Finally, a wirelessly powered light detection sensor was successfully demonstrated based on the developed rectenna.

Original languageEnglish (US)
Title of host publication2020 IEEE Wireless Power Transfer Conference, WPTC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages69-71
Number of pages3
ISBN (Electronic)9781728142388
DOIs
StatePublished - Nov 15 2020
Externally publishedYes
Event2020 IEEE Wireless Power Transfer Conference, WPTC 2020 - Seoul, Korea, Republic of
Duration: Nov 15 2020Nov 19 2020

Publication series

Name2020 IEEE Wireless Power Transfer Conference, WPTC 2020

Conference

Conference2020 IEEE Wireless Power Transfer Conference, WPTC 2020
Country/TerritoryKorea, Republic of
CitySeoul
Period11/15/2011/19/20

Keywords

  • Electrically small antennas
  • Huygens pattern
  • Internet-of-Things (IoT)
  • Planar
  • Rectenna
  • Ultra-compact
  • Wireless power transfer

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Radiation

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