IMPROVING WIRELESS POWER TRANSFER EFFICIENCY USING METASURFACES

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https://hdl.handle.net/2142/124788

Title: IMPROVING WIRELESS POWER TRANSFER EFFICIENCY USING METASURFACES
Author(s): Yu, Joshua
Issue Date: 2023-05-01
Keyword(s): wireless power transfer; metasurface; strongly coupled resonators.
Abstract: There has been renewed interest in wireless power transfer (WPT) technology to enable more convenient consumer electronics applications such as charging mobile devices, electric vehicles, and biomedical implants. At the same time, recent work has proven metamaterials to be a powerful tool for shaping electromagnetic fields. This project builds upon prior theoretical work to experimentally show the improvement in power transfer efficiency by utilizing an optimized metasurface as a passive relay to reform the magnetic field and therefore enable high-efficiency wireless power transfer with only a single transmitting coil. It shows up to 4.6 times improvement in efficiency. The metasurface also increases the coverage area from around 5 cm by 5 cm with over 40% efficiency to around 10 cm by 10 cm with over 70% efficiency.
Type of Resource: text
Language: eng

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