Design of an Inductive Power Transfer System with Flexible Coils for Body-worn Applications

L. R. Clare, S. G. Burrow, B. H. Stark, N. J. Grabham, S. P. Beeby

Research output: Contribution to journalArticle (Academic Journal)peer-review

2 Citations (Scopus)


This paper describes an IPT (Inductive Power Transfer) system for body worn electronics, and investigates the challenges for an IPT system that arise specifically in this scenario. Principally, these are: highly variable coil coupling through time-varying miss-alignment and coil separation; a requirement that one or both of the coils must be wearable and thus flexible; and proximity to the human body introducing limits on the maximum EM field. The highly variable coupling results in a system that must operate effectively with a large range of received powers, whilst the constraints on the realisation of the coils typically reduce the Q-factor; the human exposure considerations limit both the maximum field strengths that the wearer of a receiver coil might experience, and also the field strengths that a 3rd party might be exposed to, for instance when approaching the transmit coil.

Original languageEnglish
Article number012135
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 10 Dec 2015
EventThe 15th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2015) - Boston, United States
Duration: 1 Dec 2015 → …

Structured keywords

  • Digital Health


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