Experimenting Waveforms and Efficiency in RF Power Transfer

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

doi:10.1109/MWSYM.2019.8700791

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 proceeding › Conference contribution › Scientific › peer-review

7 Citations (Scopus)

132 Downloads (Pure)

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.

Original language	English
Title of host publication	2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Publisher	IEEE
Pages	1140-1143
Number of pages	4
ISBN (Electronic)	9781728113098
DOIs	https://doi.org/10.1109/MWSYM.2019.8700791
Publication status	Published - 1 Jun 2019
Publication type	A4 Article in conference proceedings
Event	IEEE MTT-S International Microwave Symposium - Boston, United States Duration: 2 Jun 2019 → 7 Jun 2019

Publication series

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

Conference

Conference	IEEE MTT-S International Microwave Symposium
Country/Territory	United States
City	Boston
Period	2/06/19 → 7/06/19

Funding

This research was partially supported by the Ulla Tuominen foundation and the Academy of Finland under the grants 310991 and 315858.

Keywords

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

Access to Document

10.1109/MWSYM.2019.8700791

Experimenting_Waveforms_and_Efficiency_in_RF_Power_TransferAccepted author manuscript, 1.21 MB

http://urn.fi/URN:NBN:fi:tuni-202001151293

Cite this

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title = "Experimenting Waveforms and Efficiency in RF Power Transfer",

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",

author = "Nachiket Ayir and \{Trujillo Fierro\}, \{Marcelo Fabian\} and Taneli Riihonen and Markus Allen",

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Ayir, N, Trujillo Fierro, MF, Riihonen, T & Allen, M 2019, Experimenting Waveforms and Efficiency in RF Power Transfer. in 2019 IEEE MTT-S International Microwave Symposium, IMS 2019. IEEE MTT-S International Microwave Symposium Digest, IEEE, pp. 1140-1143, IEEE MTT-S International Microwave Symposium, Boston, United States, 2/06/19. https://doi.org/10.1109/MWSYM.2019.8700791

Experimenting Waveforms and Efficiency in RF Power Transfer. / Ayir, Nachiket; Trujillo Fierro, Marcelo Fabian; Riihonen, Taneli et al.
2019 IEEE MTT-S International Microwave Symposium, IMS 2019. IEEE, 2019. p. 1140-1143 (IEEE MTT-S International Microwave Symposium Digest).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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AU - Trujillo Fierro, Marcelo Fabian

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AU - Allen, Markus

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N2 - 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.

AB - 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.

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Experimenting Waveforms and Efficiency in RF Power Transfer

Abstract

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Keywords

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ASJC Scopus subject areas

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