TY - JOUR
T1 - Circuit modeling of wireless power transfer system in the vicinity of perfectly conducting scatterer
AU - Haga, Nozomi
AU - Chakarothai, Jerdvisanop
AU - Konno, Keisuke
N1 - Funding Information:
This work was financially supported by JSPS KAKENHI under Grant Number 19K04321, and was performed in the Cooperative Research Project of the Research Institute of Electrical Communication, Tohoku University.
Publisher Copyright:
Copyright © 2020 The Institute of Electronics, Information and Communication Engineers
PY - 2020/12/1
Y1 - 2020/12/1
N2 - 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.
AB - 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.
KW - Impedance expansion method
KW - Method of moments
KW - Wireless power transfer
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U2 - 10.1587/transcom.2019EBP3211
DO - 10.1587/transcom.2019EBP3211
M3 - Article
AN - SCOPUS:85097943461
SN - 0916-8516
VL - E103B
SP - 1411
EP - 1420
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
IS - 12
ER -