EfficientWireless Power Transfer via Magnetic ResonanceCoupling Using Automated Impedance Matching Circuit Articles uri icon

publication date

  • November 2021

start page

  • 1

end page

  • 11

issue

  • 22

volume

  • 10

International Standard Serial Number (ISSN)

  • 2079-9292

abstract

  • In this paper, an automated impedance matching circuit is proposed to match the impedance
    of the transmit and receive resonators for optimum wireless power transfer (WPT). This is achieved
    using a 2D open-circuited spiral antenna with magnetic resonance coupling in the low-frequency ISM
    band at 13.56 MHz. The proposed WPT can be adopted for a wide range of commercial applications,
    from electric vehicles to consumer electronics, such as tablets and smartphones. The results confirm
    a power transfer efficiency between the transmit and receive resonant circuits of 92%, with this
    efficiency being sensitive to the degree of coupling between the coupled pair of resonators.

keywords

  • wireless power transfer (wpt); automated impedance matching circuit; magnetic; resonant coupling