Differentially-fed omnidirectional circularly polarized patch antenna for RF energy harvesting

Bao Xiulong, Yang Kansheng, Oisin O'Conchubhair, Max J. Ammann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Citations (Scopus)

Abstract

A differentially-fed omnidirectional circularly-polarized antenna is investigated for application in RF energy harvesting. The antenna is composed of a two-layer substrate and back-to-back printed square patches which have two diagonal stubs and one truncation. The patches share a common ground plane. Both patches generate circular polarization (CP) and omnidirectional CP is provided. The antenna provides an axial-ratio bandwidth of 20 MHz from 2.43 GHz to 2.45 GHz. In order to measure the proposed differentially-fed antenna, a feed network connected between the SMA port and differential port is designed. Furthermore, the combined configurations with the proposed antenna, bandpass filter and rectifier can be built and convert the electromagnetic field to DC. The measured output voltage is 255mV at 2.40GHz.

Original languageEnglish
Title of host publication2016 10th European Conference on Antennas and Propagation, EuCAP 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788890701863
DOIs
Publication statusPublished - 31 May 2016
Event10th European Conference on Antennas and Propagation, EuCAP 2016 - Davos, Switzerland
Duration: 10 Apr 201615 Apr 2016

Publication series

Name2016 10th European Conference on Antennas and Propagation, EuCAP 2016

Conference

Conference10th European Conference on Antennas and Propagation, EuCAP 2016
Country/TerritorySwitzerland
CityDavos
Period10/04/1615/04/16

Keywords

  • Axial Ratio
  • Back-to-Back
  • Bandpass Filter
  • Circularly Polarized Antenna
  • Differentially-fed
  • Omnidirectional Radiation
  • RF Energy Harvester
  • Rectifier

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