Kazuki MATSUMOTO¹, Jun KATSUYAMA¹, Ryo SUGIYAMA¹, Yasuaki TAKIZAWA¹, Seita ISHII¹, Mitsuru SHINAGAWA¹, and Yuichi KADO²

¹Faculty of Science and Engineering, Hosei University, Koganei, Tokyo 184-8584, Japan
²Department of Electronics, Kyoto Institute of Technology, Kyoto 606-8585, Japan

(Received January 9, 2014; Accepted May 19, 2014)

In this paper, we describe an induced signal measurement on the human body for developing a high-performance transceiver of an intra-body communication system. It is important to isolate awearable transceiver from an electrical instrument for precise measurement. We have developed a probe system using an optical isolation method including a laser diode, photo-diode, and optical fiber. The probe system can be successfully applied to the precise measurement of a receiving signal power at a wearable transceiver. We verify that the experimental results agree with the simulation results based on our previous channel model of intra-body communication.

Key words: intra-body communication, wearable transceiver, laser diode, photo-diode, optical fiber, circuit simulation, channel model, human body, ubiquitous computing