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Circuit Modeling of Wireless Power Transfer System in the Vicinity of Perfectly Conducting Scatterer Nozomi HAGA Jerdvisanop CHAKAROTHAI Keisuke KONNO Publication IEICE TRANSACTIONS on Communications Vol.E103-B No.12 pp.1411-1420 Publication Date: 2020/12/01 Publicized: 2020/06/22 Online ISSN: 1745-1345 DOI: 10.1587/transcom.2019EBP3211 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: wireless power transfer, method of moments, impedance expansion method, Full Text: PDF(1.9MB)>>
Summary: 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. | |||||
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