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Experimenting Waveforms and Efficiency in RF Power Transfer

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

Details

Original languageEnglish
Title of host publication2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PublisherIEEE
Pages1140-1143
Number of pages4
ISBN (Electronic)9781728113098
DOIs
Publication statusPublished - 1 Jun 2019
Publication typeA4 Article in a conference publication
EventIEEE MTT-S International Microwave Symposium - Boston, United States
Duration: 2 Jun 20197 Jun 2019

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Conference

ConferenceIEEE MTT-S International Microwave Symposium
CountryUnited States
CityBoston
Period2/06/197/06/19

Abstract

In this paper, we present a prototype test-bed for radio-frequency (RF) wireless power transfer (WPT) comprising a software-defined radio (SDR) transmitter and an energy harvesting receiver with a diode-based rectifier. The test-bed allows us to study the end-to-end efficiency of RF WPT when employing different co-phased multisine waveforms. In particular, we analyze the clipping and non-linear behaviours of the transmitter by experimentally evaluating how they affect the performance of waveforms. The experimental results indicate that transmitting impulse-like signals is actually not optimal for RF WPT in practice despite they would be ideal in terms of rectifier efficiency. Instead, the results highlight the superior performance of single-tone signals over co-phased multisines in terms of both end-to-end WPT efficiency and spectral purity.

Keywords

  • RF energy harvesting, Wireless power transfer

Publication forum classification