TY - GEN
T1 - Optimal Operation of Multitone Waveforms in Low RF-Power Receivers
AU - Ouda, Mahmoud H.
AU - Mitcheson, Paul
AU - Clerckx, Bruno
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported by EPSRC of U.K. under Grant EP/P003885/1.
Publisher Copyright:
© 2018 IEEE.
PY - 2019/2/11
Y1 - 2019/2/11
N2 - 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.
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.
KW - energy harvesting
KW - multitone
KW - rectifier
KW - wireless power transmission
UR - http://www.scopus.com/inward/record.url?scp=85051259491&partnerID=8YFLogxK
U2 - 10.1109/WPT.2018.8639426
DO - 10.1109/WPT.2018.8639426
M3 - Conference contribution
AN - SCOPUS:85051259491
T3 - 2018 IEEE Wireless Power Transfer Conference, WPTC 2018
BT - 2018 IEEE Wireless Power Transfer Conference, WPTC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE Wireless Power Transfer Conference, WPTC 2018
Y2 - 3 June 2018 through 7 June 2018
ER -