IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543

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Extended k-Q product formulas for capacitive- and inductive-coupling wireless power transfer schemes
Takashi Ohira
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JOURNAL FREE ACCESS Advance online publication

Article ID: 11.20140147

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Abstract

This paper presents versatile formulas that characterize wireless power transfer schemes in arbitrary coupling topologies. Maximum available coupling efficiency is formulated in two-port immittance matrix domain invariant to source and load conditions. Key performance index k-Q product is extended to general cases even where resonance or filtering model is inapplicable. Typical capacitive- and inductive-coupling schemes are shown with their k-Q product instances.

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© 2014 by The Institute of Electronics, Information and Communication Engineers
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