Fields and coupling between coils embedded in conductive environments

Chu, S. , Vallecchi, A., Stevens, C. J. and Shamonina, E. (2018) Fields and coupling between coils embedded in conductive environments. EPJ Applied Metamaterials, 5, 2. (doi: 10.1051/epjam/2017012)

Abstract

An approximate solution is developed for the mutual inductance of two circular coils enclosed by insulating cavities in a conducting medium. This solution is used to investigate the variation of the mutual inductance upon the conductivity of the background (e.g., soil, seawater or human body), as well as upon other parameters such as the vertical of the coils and the displacement of one of the coils in the horizontal plane. Our theoretical results are compared with full wave simulations and a previous solution valid when a conductive slab is inserted between two coupled resonant coils. The proposed approach can have direct impact on the design and optimisation of magnetoinductive waveguides and wireless power transfer for underground/underwater networks and embedded biomedical systems.

• 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).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cong Chu, Dr Son
• Authors: Chu, S., Vallecchi, A., Stevens, C. J., and Shamonina, E.
• College/School: College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
• Journal Name: EPJ Applied Metamaterials
• Publisher: EDP Sciences
• ISSN: 2272-2394
• ISSN (Online): 2272-2394
• Published Online: 23 February 2018
• Copyright Holders: Copyright © 2018 S. Chu et al.
• First Published: First published in EPJ Applied Metamaterials 5: 2
• Publisher Policy: Reproduced under a Creative Commons License