Wireless Power:
Foundations of Wireless Information and Power Transfer: Theory,
Prototypes, and Experiments
As wireless has
disrupted communications, wireless will also disrupt the delivery of
energy. Future wireless networks will be equipped with (radiative)
wireless power transfer (WPT) capability and exploit radio waves to
carry both energy and information through unified wireless
information and power transfer (WIPT). Such networks will make the
best use of the RF spectrum and radiation, as well as the network
infrastructure for the dual purpose of communicating and energizing.
Consequently, those networks will enable trillions of future
low-power devices to sense, compute, connect, and energize anywhere,
anytime, and on the move. In this article, we review the foundations
of such a future system. We first give an overview of the
fundamental theoretical building blocks of WPT and WIPT. Then, we
discuss some state-of-the-art experimental setups and prototypes of
both WPT and WIPT, and contrast theoretical and experimental
results. We draw special attention to how the integration of RF,
signal, and system designs in WPT and WIPT leads to new theoretical
and experimental design challenges for both microwave and
communication engineers and highlight some promising solutions.
Topics and experimental testbeds discussed include closed-loop WPT
and WIPT architectures with beamforming, waveform, channel
acquisition, and single-antenna/multiantenna energy harvester,
centralized and distributed WPT, reconfigurable metasurfaces and
intelligent surfaces for WPT, transmitter and receiver architecture
for WIPT, modulation, and rate–energy tradeoff. Moreover, we
highlight important theoretical and experimental research directions
to be addressed for WPT and WIPT to become a foundational technology
of future wireless networks.
Foundations of Wireless Information and Power Transfer: Theory,
Prototypes, and Experiments | IEEE Journals & Magazine | IEEE Xplore
(PDF) Fundamentals of Wireless
Information and Power Transfer: From RF Energy Harvester Models to
Signal and System Designs (researchgate.net)
January 2022 - Proceedings of the IEEE
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