Quasioptical Double-Lens Wireless Power Transfer System with Patch Array Antennas

abstract

Aiming to transfer power wirelessly for indoor applications, a 4x4 phased array transmitter was developed at 5.8 GHz, whose radiating elements were rectangular patch antennas. Dielectric lenses were implemented using quasioptics, to focus the energy and reduce the spillover losses. Without knowing the exact gaussian beam created by phased arrays, a lens from another project was used to extract the beam parameters, after which, an optimized lens was designed and manufactured. This paper presents the experimental results of two system configurations, one with the optimized lens and a system using both dielectric lenses, up to a maximum transfer distance of 2 m. Finally, an RF-DC converter was used, enabling DC-DC wireless power transfer.

subject category

Engineering; Telecommunications

authors

Pereira, RAM; Matos, D; Figueiredo, R; Mendes, B; Chaves, H; Ribeiro, H; Costa, H; Belo, D; Oliveira, JMM; Oliveira, A; Carvalho, NB

our authors

acknowledgements

Ricardo A. M. Pereira would like to thank the Fundacao para a Ciencia e a Tecnologia (FCT), Portugal, for his Ph.D. grant SFRH/BD/145024/2019. This work is also funded by FCT/MCTES through national funds and when applicable co-funded EU funds under the project UIDB/50008/2020-UIDP/50008/2020.

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