Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Charging Mobile Devices in Indoor Environments

Diogo Matos
ORCID logo ,
Ricardo Pereira
ORCID logo ,
Helena Ribeiro
,
Bernardo Mendes
,
Daniel Belo
,
Arnaldo Oliveira
ORCID logo ,
Nuno Borges Carvalho
* ORCID logo
Version 1 : Received: 19 March 2022 / Approved: 21 March 2022 / Online: 21 March 2022 (10:45:08 CET)

A peer-reviewed article of this Preprint also exists.

Matos, D.; Pereira, R.A.M.; Ribeiro, H.; Mendes, B.; Belo, D.; Oliveira, A.; Carvalho, N.B. Charging Mobile Devices in Indoor Environments. Energies 2022, 15, 3450. Matos, D.; Pereira, R.A.M.; Ribeiro, H.; Mendes, B.; Belo, D.; Oliveira, A.; Carvalho, N.B. Charging Mobile Devices in Indoor Environments. Energies 2022, 15, 3450.

Abstract

Wireless power transfer promises to revolutionize the way we use and power mobile devices. However, low transfer efficiencies prevent this technology from seeing wide scale real-world adoption. The aim of this work is to use quasioptics to develop a system composed of a dielectric lens fed by a phased array to reduce spillover losses, increasing the beam efficiency, while working on the antenna system’s Fresnel zone. The DC-RF electronics, digital beamforming and beam-steering by an FPGA, and radiating 4x4 microstrip patch phased array have been developed and experimented upon, while the lens has been designed and simulated. This paper details these preliminary results, where the phased array radiation pattern was measured, showing that the beam is being generated and steered as expected, prompting the lens construction for the complete system experimentation.

Keywords

wireless power transfer; microwaves; DC-RF conversion; beamforming; beamsteering; phased array; microstrip patch; dielectric lens; antenna characterization

Subject

Engineering, Electrical and Electronic Engineering

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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