P-15 全身共振を利用した体内から体外への小電力無線情報伝送 : FDTD法を用いた電磁界解析による検証(ポスター要旨講演)

概要

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Implantable medical devices need to transmit information between the inside and the outside of a human body. Therefore, sufficient information needs to traverse a long communication distance but at low power. However, electromagnetic waves attenuate when information is transmitted through tissues such as muscle, skin, and various organs. In this paper, we propose a new method for wireless information transmission that uses whole-body resonance. First, we constructed a cylindrical human body model (170 mm high). Electromagnetic simulation was provided by a small implanted dipole antenna. We then examined the maximum frequency values, taking the electric and magnetic fields surrounding the human body model and dividing by the transmitting power of the antenna. The maximum frequency value was 43 MHz, which was essentially the same frequency as the theoretical value of whole-body resonance (44.1 MHz). Therefore, information may possibly transmit more efficiently using whole-body resonance.
2010-03-16