Magnetic Resonant Coupling Based Wireless Power Transfer System with In-Band Communication

This paper presents a design of a wireless power transfer system based on magnetic resonant coupling technology with in-band wireless communication. To increase the transmission distance and compensate for the change in the effective capacitance due to the varying distance, the proposed system used...

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Published in:Journal of semiconductor technology and science 2013, 13(6), 54, pp.562-568
Main Authors: Kim, Sun-Hee, Lim, Yong-Seok, Lee, Seung-Jun
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Language:English
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전기공학
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description This paper presents a design of a wireless power transfer system based on magnetic resonant coupling technology with in-band wireless communication. To increase the transmission distance and compensate for the change in the effective capacitance due to the varying distance, the proposed system used a loop antenna with a selectable capacitor array. Because the increased transmission distance enables multiple charging, we added a communication protocol operated at the same frequency band to manage a network and control power circuits. In order to achieve the efficient bandwidth in both power transfer mode and communication mode, the S-parameters of the loop antennas are adjusted by switching a series resistor. Our test results showed that the loop antenna achieved a high Q factor in power transfer mode and enough passband in communication mode. KCI Citation Count: 2
doi_str_mv 10.5573/JSTS.2013.13.6.562
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title Magnetic Resonant Coupling Based Wireless Power Transfer System with In-Band Communication
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