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Intra-body microwave communication through adipose tissue
Umeå University, Faculty of Science and Technology, Department of Computing Science.
Umeå University, Faculty of Science and Technology, Department of Computing Science. Department of Electronics and Electrical Communications, Menoufia University, Menouf, Egypt.
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2017 (English)In: Healthcare technology letters, E-ISSN 2053-3713, Vol. 4, no 4, 115-121 p.Article in journal (Refereed) Published
Abstract [en]

The human body can act as a medium for the transmission of electromagnetic waves in the wireless body sensor networks context. However, there are transmission losses in biological tissues due to the presence of water and salts. This Letter focuses on lateral intra-body microwave communication through different biological tissue layers and demonstrates the effect of the tissue thicknesses by comparing signal coupling in the channel. For this work, the authors utilise the R-band frequencies since it overlaps the industrial, scientific and medical radio (ISM) band. The channel model in human tissues is proposed based on electromagnetic simulations, validated using equivalent phantom and ex-vivo measurements. The phantom and ex-vivo measurements are compared with simulation modelling. The results show that electromagnetic communication is feasible in the adipose tissue layer with a low attenuation of approximate to 2 dB per 20 mm for phantom measurements and 4 dB per 20 mm for ex-vivo measurements at 2 GHz. Since the dielectric losses of human adipose tissues are almost half of ex-vivo tissue, an attenuation of around 3 dB per 20 mm is expected. The results show that human adipose tissue can be used as an intra-body communication channel.

Place, publisher, year, edition, pages
The Institution of Engineering and Technology , 2017. Vol. 4, no 4, 115-121 p.
Keyword [en]
electromagnetic wave transmission, body sensor networks, biological tissues, phantoms, dielectric losses, wireless body sensor networks, transmission losses, water, salts, lateral intrabody microwave communication, biological tissue layers, tissue thicknesses, signal coupling, R-band frequencies, industrial radio band, scientific radio band, medical radio band, electromagnetic simulations, equivalent phantom, ex-vivo measurements, adipose tissue layer, phantom measurements
National Category
Medical Engineering Biomedical Laboratory Science/Technology
Identifiers
URN: urn:nbn:se:umu:diva-139151DOI: 10.1049/htl.2016.0104ISI: 000408370500001OAI: oai:DiVA.org:umu-139151DiVA: diva2:1141415
Available from: 2017-09-14 Created: 2017-09-14 Last updated: 2017-09-19Bibliographically approved

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