Optimal Operation of Multitone Waveforms in Low RF-Power Receivers

Mahmoud H. Ouda; Paul Mitcheson; Bruno Clerckx

doi:10.1109/WPT.2018.8639426

Optimal Operation of Multitone Waveforms in Low RF-Power Receivers

Mahmoud H. Ouda, Paul Mitcheson, Bruno Clerckx

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

18 Citations (Scopus)

Abstract

This paper presents a study of the optimal performance of multitone signals in low RF-power transfer and energy harvesters. The choice of the load can be tricky, showing an advantage of a certain type of signals over another. For low RF power (-17dBm), the multitone signals do not improve the peak RF-to-dc power conversion efficiency (PCE) over the continuous wave (CW) single-tone signal, if the optimal load is selected for each case, however, the multitone signals maintain that peak PCE of ∼ 47% over higher output voltage (i.e: larger loads), and consequently enable more efficient dc-to-dc voltage boosting or even eliminate the need for the voltage booster in the RF power receiver. Thus, the low-power multitone waveforms can be considered as a voltage sensitivity booster rather than a PCE efficiency booster. This boosted rectified voltage is the key advantage of the multitone signals that leads to the enhancement in the overall efficiency of the low-RF power receiver.

Original language	English
Title of host publication	2018 IEEE Wireless Power Transfer Conference, WPTC 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781538651599
DOIs	https://doi.org/10.1109/WPT.2018.8639426
Publication status	Published - 2018 Jul 2
Event	2018 IEEE Wireless Power Transfer Conference, WPTC 2018 - Montreal, Canada Duration: 2018 Jun 3 → 2018 Jun 7

Publication series

Name	2018 IEEE Wireless Power Transfer Conference, WPTC 2018

Conference

Conference	2018 IEEE Wireless Power Transfer Conference, WPTC 2018
Country/Territory	Canada
City	Montreal
Period	18/6/3 → 18/6/7

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by EPSRC of U.K. under Grant EP/P003885/1.

Publisher Copyright:
© 2018 IEEE.

Keywords

energy harvesting
multitone
rectifier
wireless power transmission

ASJC Scopus subject areas

Computer Networks and Communications
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1109/WPT.2018.8639426

Cite this

Optimal Operation of Multitone Waveforms in Low RF-Power Receivers. / Ouda, Mahmoud H.; Mitcheson, Paul; Clerckx, Bruno.
2018 IEEE Wireless Power Transfer Conference, WPTC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. 8639426 (2018 IEEE Wireless Power Transfer Conference, WPTC 2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ouda, MH, Mitcheson, P & Clerckx, B 2018, Optimal Operation of Multitone Waveforms in Low RF-Power Receivers. in 2018 IEEE Wireless Power Transfer Conference, WPTC 2018., 8639426, 2018 IEEE Wireless Power Transfer Conference, WPTC 2018, Institute of Electrical and Electronics Engineers Inc., 2018 IEEE Wireless Power Transfer Conference, WPTC 2018, Montreal, Canada, 18/6/3. https://doi.org/10.1109/WPT.2018.8639426

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abstract = "This paper presents a study of the optimal performance of multitone signals in low RF-power transfer and energy harvesters. The choice of the load can be tricky, showing an advantage of a certain type of signals over another. For low RF power (-17dBm), the multitone signals do not improve the peak RF-to-dc power conversion efficiency (PCE) over the continuous wave (CW) single-tone signal, if the optimal load is selected for each case, however, the multitone signals maintain that peak PCE of ∼ 47% over higher output voltage (i.e: larger loads), and consequently enable more efficient dc-to-dc voltage boosting or even eliminate the need for the voltage booster in the RF power receiver. Thus, the low-power multitone waveforms can be considered as a voltage sensitivity booster rather than a PCE efficiency booster. This boosted rectified voltage is the key advantage of the multitone signals that leads to the enhancement in the overall efficiency of the low-RF power receiver.",

keywords = "energy harvesting, multitone, rectifier, wireless power transmission",

author = "Ouda, {Mahmoud H.} and Paul Mitcheson and Bruno Clerckx",

note = "Funding Information: ACKNOWLEDGMENT This work was supported by EPSRC of U.K. under Grant EP/P003885/1. Publisher Copyright: {\textcopyright} 2018 IEEE.; 2018 IEEE Wireless Power Transfer Conference, WPTC 2018 ; Conference date: 03-06-2018 Through 07-06-2018",

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AB - This paper presents a study of the optimal performance of multitone signals in low RF-power transfer and energy harvesters. The choice of the load can be tricky, showing an advantage of a certain type of signals over another. For low RF power (-17dBm), the multitone signals do not improve the peak RF-to-dc power conversion efficiency (PCE) over the continuous wave (CW) single-tone signal, if the optimal load is selected for each case, however, the multitone signals maintain that peak PCE of ∼ 47% over higher output voltage (i.e: larger loads), and consequently enable more efficient dc-to-dc voltage boosting or even eliminate the need for the voltage booster in the RF power receiver. Thus, the low-power multitone waveforms can be considered as a voltage sensitivity booster rather than a PCE efficiency booster. This boosted rectified voltage is the key advantage of the multitone signals that leads to the enhancement in the overall efficiency of the low-RF power receiver.

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Optimal Operation of Multitone Waveforms in Low RF-Power Receivers

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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