Efficiency–Throughput Trade-off of Pulsed RF Waveforms in Simultaneous Wireless Information and Power Transfer

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

We study the receiver efficiency–throughput trade-off in a realistic radio frequency (RF) simultaneous wireless information and power transfer (SWIPT) system. Based on the energy harvesting receiver characteristics, we propose a continuously phase-modulated pulsed RF waveform to achieve maximum receiver efficiency at any input RF power level. We study the impact of varying the duty cycle of a pulsed RF waveform on the receiver efficiency of wireless power transfer along with the throughput of information transfer, and the trade-off thereof. The experiments confirm that a phase-shift keying (PSK) modulated pulsed RF waveform yields superior receiver efficiency than other digital baseband modulations as well as multisine signals despite they are designed particularly for power transfer. However, the optimal efficiency is attained at the expense of a significant loss in throughput due to pulsed transmission, depending on the average input RF power level.
Original languageEnglish
Title of host publication2023 IEEE Wireless Power Technology Conference and Expo (WPTCE) - Proceedings
PublisherIEEE
ISBN (Electronic)979-8-3503-3737-2
ISBN (Print)979-8-3503-3738-9
DOIs
Publication statusPublished - 2023
Publication typeA4 Article in conference proceedings
EventIEEE Wireless Power Technology Conference and Expo - San Diego, United States
Duration: 4 Jun 20238 Jun 2023

Conference

ConferenceIEEE Wireless Power Technology Conference and Expo
Country/TerritoryUnited States
CitySan Diego
Period4/06/238/06/23

Keywords

  • continuous phase modulation
  • Wireless power transfer
  • efficeincy-throughput trade-off
  • pulsed RF
  • simultaneous wireless information and power transfer (SWIPT)

Publication forum classification

  • Publication forum level 1

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