Experimenting Waveforms and Efficiency in RF Power Transfer

Nachiket Ayir, Marcelo Fabian Trujillo Fierro, Taneli Riihonen, Markus Allen

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

3 Citations (Scopus)
78 Downloads (Pure)


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.

Original languageEnglish
Title of host publication2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Number of pages4
ISBN (Electronic)9781728113098
Publication statusPublished - 1 Jun 2019
Publication typeA4 Article in conference proceedings
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


ConferenceIEEE MTT-S International Microwave Symposium
Country/TerritoryUnited States


  • RF energy harvesting
  • Wireless power transfer

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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