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Waveform Design for Wireless Power Transfer with Power Amplifier and Energy Harvester Non-Linearities

Citation Author(s):
Submitted by:
Yumeng Zhang
Last updated:
5 May 2022 - 5:03am
Document Type:
Presentation Slides
Document Year:
2022
Event:
Presenters:
Yumeng Zhang
Paper Code:
SS-2.1
 

Waveform optimization has recently been shown to be a key technique to boost the efficiency and range of far-field wireless power transfer (WPT). Current research has optimized transmit waveform adaptive to channel state information (CSI) and accounting for energy harvester (EH)’s non-linearity but under the assumption of linear high power amplifiers (HPA) at the transmitter. This paper proposes a channel-adaptive waveform design strategy that optimizes the transmitter's input waveform considering both HPA and EH non-linearities. Simulations demonstrate that HPA’s non-linearity degrades the energy harvesting efficiency of WPT significantly, while the performance loss can be compensated by using the proposed optimal input waveform.

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