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J. Electromagn. Eng. Sci > Volume 15(2); 2015 > Article
Journal of Electromagnetic Engineering and Science 2015;15(2):97-103.
DOI: https://doi.org/10.5515/JKIEES.2015.15.2.97   
Analysis of Absorption Loss by a Human Body in On-to-Off Body Communication at 2.45 GHz
Jaesung Jeon, Sangwoo Lee, Jaehoon Choi, Sunwoo Kim
Department of Electronics and Computer Engineering, Hanyang University
Abstract
This paper investigates the effect of absorption loss by a human body to the received signal strength with respect to on-body transmitting antenna positions in on-to-off wireless body area networks. This investigation is based on measurement results obtained from experiments performed on human bodies (male and female) using planar inverted-F antennas in an anechoic chamber. The total absorption loss by the human body is also presented through the SEMCAD-X simulations. Our investigation showed that the received signal strength becomes lower when the transmitting antenna is mounted at a specific position where more absorption loss is experienced. The statistical analyses of on-to-off body channel characteristics based on the measurement results are presented.
Key words: Absorption Loss, Channel Characterization, Off-Body System, Received Signal Strength
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