Electrically Small, Highly Efficient, Huygens Circularly Polarized Rectenna for Wireless Power Transfer Applications

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

Abstract

This paper introduces the first realized electrically small, highly efficient, Huygens circularly polarized (HCP) rectenna for wireless power transfer applications. It is designed to operate at the 915 MHz in the corresponding ISM band. It is realized through the seamless integration of an electrically small HCP antenna and a highly efficient rectifier circuit. The electrically small HCP antenna consists of four electrically small near-field resonant parasitic (NFRP) elements: two Egyptian axe dipoles (EADs) and two capacitively loaded loops (CLLs). The rectifier is a full-wave rectifying circuit based on HSMS286C diodes. It is integrated with the HCP antenna on its bottom layer via a coplanar stripline (CPS) without occupying any additional space. A HCP rectenna prototype was successfully fabricated and tested. It is electrically small (ka < 0.77) with a radius R = λ0 / 8 and a height H = λ0 / 25. Excellent CP radiation absorption capacity is observed. The measured peak AC to DC conversion efficiency reaches 82%. Being electrically small and highly efficient, the reported HCP rectenna is an ideal candidate for wirelessly powering internet-of-things (IoT) devices in many emerging IoT applications.

Original languageEnglish (US)
Title of host publication13th European Conference on Antennas and Propagation, EuCAP 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788890701887
Publication statusPublished - Mar 1 2019
Event13th European Conference on Antennas and Propagation, EuCAP 2019 - Krakow, Poland
Duration: Mar 31 2019Apr 5 2019

Publication series

Name13th European Conference on Antennas and Propagation, EuCAP 2019

Conference

Conference13th European Conference on Antennas and Propagation, EuCAP 2019
CountryPoland
CityKrakow
Period3/31/194/5/19

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Keywords

  • Circular polarization
  • electrically small antennas
  • Huygens antennas
  • internet-of-things (IoT)
  • near field resonant parasitic elements
  • rectennas
  • rectifier circuits

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation

Cite this

Lin, W., & Ziolkowski, R. W. (2019). Electrically Small, Highly Efficient, Huygens Circularly Polarized Rectenna for Wireless Power Transfer Applications. In 13th European Conference on Antennas and Propagation, EuCAP 2019 [8739368] (13th European Conference on Antennas and Propagation, EuCAP 2019). Institute of Electrical and Electronics Engineers Inc..