Circuit Modeling of Wireless Power Transfer System in the Vicinity of Perfectly Conducting Scatterer

• HAGA Nozomi

  Graduate School of Science and Technology, Gunma University

• CHAKAROTHAI Jerdvisanop

  National Institute of Information and Communications Technology

• KONNO Keisuke

  Department of Communications Engineering, Tohoku University

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.

Journal

• IEICE Transactions on Communications

  IEICE Transactions on Communications E103.B (12), 1411-1420, 2020-12-01

  The Institute of Electronics, Information and Communication Engineers

Keywords

• wireless power transfer
• method of moments
• impedance expansion method

Details

• CRID: 1391975276373866752
• NII Article ID: 130007948496
• DOI: 10.1587/transcom.2019ebp3211
• ISSN: 17451345
• ISSN: 09168516
• Web Site: https://www.jstage.jst.go.jp/article/transcom/E103.B/12/E103.B_2019EBP3211/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed