Research Article
Signal Interference Analysis Model In Near-Field Coupling Communication
@ARTICLE{10.4108/eai.28-9-2015.2261485, author={Shin Hasegawa and Yuichi Kado and Ibuki Yokota and Masaki Ishida and Hitoshi Shimasaki and Mitsuru Shinagawa}, title={Signal Interference Analysis Model In Near-Field Coupling Communication}, journal={EAI Endorsed Transactions on Cognitive Communications}, volume={2}, number={9}, publisher={ACM}, journal_a={COGCOM}, year={2015}, month={12}, keywords={near-field coupling communication, electrically isolated measurement, path/signal loss, interference problem}, doi={10.4108/eai.28-9-2015.2261485} }- Shin Hasegawa
Yuichi Kado
Ibuki Yokota
Masaki Ishida
Hitoshi Shimasaki
Mitsuru Shinagawa
Year: 2015
Signal Interference Analysis Model In Near-Field Coupling Communication
COGCOM
EAI
DOI: 10.4108/eai.28-9-2015.2261485
Abstract
Near-field coupling communication (NFCC) is a technology that uses the surface of the human body as a transmission path. To suppress the radiation signal from the human body, NFCC devices use a carrier frequency of less than 10 MHz. Because the radiation signal has the potential to disturb the other NFCC links, the radiation signal from other devices needs to be suppressed to ensure stable NFCC links. This paper describes our investigation of the interfering mechanism in NFCC systems to put the systems into practical use, such as at a ticket gate in the train station. We measured interference signal losses depending on the distance between two phantoms, regarded as human bodies. Based on the experimental and simulated results, an equivalent circuit of the signal interference was proposed. From the interference analytical model, we identified the capacitance that caused the interference problem and found that weakening the effects of this capacitance was important to achieve a stable NFCC link.
Copyright © 2015 S. Hasegawa et al., licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.
