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. 2014 Oct 20;14(10):19551–19560. doi: 10.3390/s141019551

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© 2014 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Figure 7. — Measured and simulated signal attenuation vs. frequency in the indoor environment: A pair of antennas located on the chest and on an arm (1–3).