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Vol. 34, No. 8(3), S&M3042

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Vol. 32, No. 8(2), S&M2292

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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 26, Number 8 (2014)
Copyright(C) MYU K.K.
pp. 581-589
S&M1024 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2014.1035
Published: October 21, 2014

Analytical and Experimental Studies on Human Body Communication between Wristwatch and Handheld Devices Using Muscle Homogenous Phantom at 10 MHz [PDF]

Dairoku Muramatsu, Fukuro Koshiji, Kohji Koshiji and Ken Sasaki

(Received April 7, 2014; Accepted August 6, 2014)

Keywords: human body communication, wearable device, sensor network, electrode, electromagnetic field analysis, phantom

In human body communication, it is important to investigate the input impedance characteristics of electrodes and transmission characteristics between transceivers for improving the qualities of communication and reducing power consumption. In this work, we studied the input impedance characteristics and transmission characteristics between a wristwatch device and a handheld device using both a three-dimensional electromagnetic field simulation and experiment at 10 MHz. The input impedance and transmission characteristics obtained from the simulation using a muscle homogenous model and those obtained from the measurement using a muscle-tissue-equivalent phantom showed good consistency. The calculated electric field around a human arm decreased as it moved away from the surface of the arm. This distribution of the electric field showed the advantages of human body communication, which are confidential communication and electromagnetic compatibility (EMC). Moreover, power consumption at the feeding point of the system was calculated from the transmission characteristics obtained from the simulation. This result indicated that human body communication achieves low-power consumption.

Corresponding author: Dairoku Muramatsu


Cite this article
Dairoku Muramatsu, Fukuro Koshiji, Kohji Koshiji and Ken Sasaki, Analytical and Experimental Studies on Human Body Communication between Wristwatch and Handheld Devices Using Muscle Homogenous Phantom at 10 MHz, Sens. Mater., Vol. 26, No. 8, 2014, p. 581-589.



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