Fluctuation of Resonance Frequency of Applicator Having Wireless Power Transmission for Hyperthermia Therapy

One of the hyperthermia therapies is hgh-frequency induction heating type by using nano-mgnetic materials and magnetic implants. A tumor with injected magnetic materials is heated by hysteresis loss and eddy-current loss under high frequency magnetic fields with a few handred kHz. To generate magnet...

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Bibliographic Details
Published in:Journal of the Magnetics Society of Japan 2013/05/01, Vol.37(3-2), pp.282-286
Main Authors: Yamada, S., Ikehata, Y., Ueno, T., Kakikawa, M.
Format: Article
Language:English
Subjects:
applicator
fluctuation
hyperthermia
pancake coil
resonance frequency
wireless transmission
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Summary:One of the hyperthermia therapies is hgh-frequency induction heating type by using nano-mgnetic materials and magnetic implants. A tumor with injected magnetic materials is heated by hysteresis loss and eddy-current loss under high frequency magnetic fields with a few handred kHz. To generate magnetic fields at the deep position of a body, we proposed a double pancake type exciting system with wireless power transmission. Since this system is constituted by two tuned resonant circuits, the characteristic is sensitive to the change of parameters. This paper discusses the fluctuations of resonance frequency depending on the change of a distance between the exciting and induced coils and resonance capacitor. As a result, we recognized the fluctuation range of the resonance frequency for a tuned exciting power source.
ISSN:1882-2924
1882-2932
DOI:10.3379/msjmag.1305R010