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Article

Transmission Analysis in Human Body Communication for Head-Mounted Wearable Devices

1
Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
2
Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563, Japan
*
Author to whom correspondence should be addressed.
Academic Editors: Qammer Hussain Abbasi, Akram Alomainy, Asimina Kiourti, Masood Ur Rehman and Muhammad Ali Imran
Electronics 2021, 10(10), 1213; https://doi.org/10.3390/electronics10101213
Received: 15 April 2021 / Revised: 13 May 2021 / Accepted: 18 May 2021 / Published: 19 May 2021
(This article belongs to the Special Issue Antennas for Wearable and Implantable Applications)
As society ages, wireless body area networks (WBANs) are expected to increasingly improve the quality of life of the elderly and disabled. One promising WBAN technology is human body communication (HBC), which utilizes part of the human body as a transmission medium. Communication between head-mounted wearable devices, such as hearing aids, is a potential HBC application. To clarify the HBC transmission mechanism between head-mounted wearable devices, this study analyzes the input impedance characteristics of the transceiver electrodes, transmission characteristics, and electric field distributions around and through a detailed head model. The investigation was performed via an electromagnetic field simulation. The signal frequency had less effect on the transmission characteristics and electric field distributions at 10, 20, and 30 MHz. However, the transmission mechanism between the head-mounted wearable devices was influenced by the number of electrodes in the transceiver. Moreover, the transmission characteristics between two-electrode transceivers were improved by impedance matching. Finally, the availability of the proposed system was evaluated from power consumption and human safety perspectives. View Full-Text
Keywords: human body communication; wireless body area network; wearable; head-mounted device; hearing aid; electromagnetic field simulation human body communication; wireless body area network; wearable; head-mounted device; hearing aid; electromagnetic field simulation
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MDPI and ACS Style

Muramatsu, D.; Sasaki, K. Transmission Analysis in Human Body Communication for Head-Mounted Wearable Devices. Electronics 2021, 10, 1213. https://doi.org/10.3390/electronics10101213

AMA Style

Muramatsu D, Sasaki K. Transmission Analysis in Human Body Communication for Head-Mounted Wearable Devices. Electronics. 2021; 10(10):1213. https://doi.org/10.3390/electronics10101213

Chicago/Turabian Style

Muramatsu, Dairoku, and Ken Sasaki. 2021. "Transmission Analysis in Human Body Communication for Head-Mounted Wearable Devices" Electronics 10, no. 10: 1213. https://doi.org/10.3390/electronics10101213

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