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Simultaneous wireless information and power transfer (SWIPT) has gained interest, especially due to its applicability in the world of Internet of Things. For pure wireless power transfer (WPT), multisine signals have already been shown to increase RF-to-DC power conversion efficiency (PCE) at the receiver which is key in WPT research. In a SWIPT system where the waveforms are modulated for information...
This paper analyzes the multi-sine wireless power transfer (WPT) system efficiency under realistic channel conditions. A theoretical system model is established including the wireless channel and the rectifier to derive the output DC power based on the transmitted multi-sine signal. Multi-sine based WPT benefits from the transmission signal's high peak-to-average-power-ratio (PAPR). Nevertheless,...
Transmitting multi-sine signals with high peak-to-average power ratio (PAPR) has emerged as an efficient solution to improve the power conversion efficiency (PCE) of wireless power transfer (WPT). This paper analyzes the radio frequency (RF) PCE as a function of the number of tones (Nt) and signal bandwidth (BW) in multi-sine based WPT networks. We show how the energy harvesting efficiency depends...
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