Acceleration of FDTD calculation of EM fields due to loop antennas used for MHz band wireless transfer system placed near human body

• Asano Keita

  Graduate School of Engineering, Tokyo University of Agriculture and Technology

• Uno Toru

  Graduate School of Engineering, Tokyo University of Agriculture and Technology

• Arima Takuji

  Graduate School of Engineering, Tokyo University of Agriculture and Technology

Abstract

The finite difference time domain (FDTD) method is widely used for analyzing various electromagnetic problems including an interaction between antennas and human body. The FDTD method provides the accurate results in most cases, however, it is often encountered for obtaining the valid EM response that the number of FDTD iteration increases dramatically in low frequency range when finer mesh is used. This is due to the Courant stability condition. This paper studies a predicting technique of the steady state responses from the transient data by using the auto-regressive moving average (ARMA) algorithm. The effectiveness of this method is numerically confirmed by analyzing the electromagnetic fields due to loop antennas used for a MHz band wireless power transfer (WPT) system, which are placed near a rectangular human body phantom.

Journal

• IEICE Communications Express

  IEICE Communications Express 6 (6), 325-330, 2017

  The Institute of Electronics, Information and Communication Engineers

Keywords

• FDTD method
• ARMA algorithm
• WPT system

Details

• CRID: 1390282680391510016
• NII Article ID: 130006907608
• DOI: 10.1587/comex.2016spl0036
• ISSN: 21870136
• Web Site: https://www.jstage.jst.go.jp/article/comex/6/6/6_2016SPL0036/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed