Preprint Article Version 1 This version is not peer-reviewed

Characterization of the Fat Channel for Intra-Body Communication at R-Band Frequencies

Version 1 : Received: 2 July 2018 / Approved: 3 July 2018 / Online: 3 July 2018 (15:08:56 CEST)

A peer-reviewed article of this Preprint also exists.

Asan, N.B.; Hassan, E.; Shah, J.V.S.R.M.; Noreland, D.; Blokhuis, T.J.; Wadbro, E.; Berggren, M.; Voigt, T.; Augustine, R. Characterization of the Fat Channel for Intra-Body Communication at R-Band Frequencies. Sensors 2018, 18, 2752. Asan, N.B.; Hassan, E.; Shah, J.V.S.R.M.; Noreland, D.; Blokhuis, T.J.; Wadbro, E.; Berggren, M.; Voigt, T.; Augustine, R. Characterization of the Fat Channel for Intra-Body Communication at R-Band Frequencies. Sensors 2018, 18, 2752.

Journal reference: Sensors 2018, 18, 2752
DOI: 10.3390/s18092752

Abstract

In this paper, we investigate the use of fat tissue as a communication channel between in-body, implanted devices at R-band frequencies (1.7–2.6 GHz). The proposed fat channel is based on an anatomical model of the human body. We propose a novel probe that is optimized to efficiently radiate the R-band frequencies into the fat tissue. We use our probe to evaluate the path loss of the fat channel by studying the channel transmission coefficient over the R-band frequencies. We conduct extensive simulation studies and validate our results by experimentation on phantom and ex-vivo porcine tissue, with good agreement between simulations and experiments. We demonstrate a performance comparison between the fat channel and similar waveguide structures. Our characterization of the fat channel reveals propagation path loss of 1.4 dB and 3.8 dB per 20 mm for phantom and ex-vivo porcine tissue, respectively. These results demonstrate that fat tissue can be used as a communication channel for high data rate intra-body networks.

Subject Areas

Intra-body communication; path loss; microwave probes; channel characterization; fat tissue; ex-vivo; phantom; dielectric properties; topology optimization.

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