Magnetoinductive waves in attenuating media

Chu, S. , Luloff, M. S., Yan, J., Petrov, P., Stevens, C. J. and Shamonina, E. (2021) Magnetoinductive waves in attenuating media. Scientific Reports, 11, 7679. (doi: 10.1038/s41598-021-85838-7) (PMID:33828111) (PMCID:PMC8027633)

Abstract

The capability of magnetic induction to transmit signals in attenuating environments has recently gained significant research interest. The wave aspect—magnetoinductive (MI) waves—has been proposed for numerous applications in RF-challenging environments, such as underground/underwater wireless networks, body area networks, and in-vivo medical diagnosis and treatment applications, to name but a few, where conventional electromagnetic waves have a number of limitations, most notably losses. To date, the effects of eddy currents inside the dissipative medium have not been characterised analytically. Here we propose a comprehensive circuit model of coupled resonators in a homogeneous dissipative medium, that takes into account all the electromagnetic effects of eddy currents, and, thereby, derive a general dispersion equation for the MI waves. We also report laboratory experiments to confirm our findings. Our work will serve as a fundamental model for design and analysis of every system employing MI waves or more generally, magnetically-coupled circuits in attenuating media.

• Item Type: Articles
• Additional Information: This work was supported by EPSRC Grant EP/N010493/1 as part of the SYMETA Project (www.symeta.co.uk). P.P. also acknowledges the financial support from the Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom via the EPSRC Centre for Doctoral Training in Metamaterials (Grant No. EP/L015331/1).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cong Chu, Dr Son
• Authors: Chu, S., Luloff, M. S., Yan, J., Petrov, P., Stevens, C. J., and Shamonina, E.
• College/School: College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
• Journal Name: Scientific Reports
• Publisher: Nature Research
• ISSN: 2045-2322
• ISSN (Online): 2045-2322
• Copyright Holders: Copyright © 2021 The Authors
• First Published: First published in Scientific Reports 11: 7679
• Publisher Policy: Reproduced under a Creative Commons License