Circuit modeling of wireless power transfer system in the vicinity of perfectly conducting scatterer

Nozomi Haga, Jerdvisanop Chakarothai, Keisuke Konno

Research output: Contribution to journalArticlepeer-review

Abstract

The impedance expansion method (IEM) is a circuit-modeling technique for electrically small devices based on the method of moments. In a previous study, a circuit model of a wireless power transfer (WPT) system was developed by utilizing the IEM and eigenmode analysis. However, this technique assumes that all the coupling elements (e.g., feeding loops and resonant coils) are in the absence of neighboring scatters (e.g., bodies of vehicles). This study extends the theory of the IEM to obtain the circuit model of a WPT system in the vicinity of a perfectly conducting scatterer (PCS). The numerical results show that the proposed method can be applied to the frequencies at which the dimension of the PCS is less than approximately a quarter wavelength. In addition, the yielded circuit model is found to be valid at the operating frequency band.

Original languageEnglish
Pages (from-to)1411-1420
Number of pages10
JournalIEICE Transactions on Communications
VolumeE103B
Issue number12
DOIs
Publication statusPublished - 2020 Dec 1

Keywords

  • Impedance expansion method
  • Method of moments
  • Wireless power transfer

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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