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Optimization of power supply by external field in a cochlear implant

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Author(s): N.BATEL, | T.KERMEZLI

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 2;
Issue: 5;
Start page: 1194;
Date: 2010;
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Keywords: Biological tissue | misalignment coils | power supply by external field | transmission factor.

ABSTRACT
In biomedical implant field, a transcutanious connection is often used by transferring the radio frequency (RF) power between coupled coils. The DC supply systems without material connection and the data transmitters used in the case of implanted biomedical devices like a cochlear implant, can be well dimensioned by taking into account the power attenuation by both transfer coils misalignment and biological tissue absorption. In this context, we present an optimal study of a DC supply circuit which takes into account these different powerattenuation aspects. Practical measurements are done to confirm the theoretical calculations.

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