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Recursive Frequency Allocation Scheme in Wireless Power Transfer and Magnetic Induction Communication Systems

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Abstract

Magnetic induction applications mostly rely on resonance for inducing maximum magnetic fields to system loads and hence for each resonant frequency dedicated circuits are required. Unfortunately, the frequency responses of such inductive systems manifest several peaks (frequency splitting) when their coupling coefficients are equal to or larger than critical coupling. Such frequency responses with several peaks are detrimental when the objective is to transfer maximum energy. Frequency splitting between inductive coils have been seen to date as detrimental to wireless power transfer and inductive communication systems. In this paper it is demonstrated that frequency splitting is a welcome phenomenon with advantage in the design of inductive filter banks and multi-frequency inductive systems. The centre frequencies of the filter banks result from split bands of inductive systems. This phenomenon is applied in conjunction with an innovative recursive algorithm to design inductive filter banks. The filters straddle both sides of the resonant frequency position and can be resolved individually.

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Correspondence to Johnson I. Agbinya.

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Agbinya, J.I. Recursive Frequency Allocation Scheme in Wireless Power Transfer and Magnetic Induction Communication Systems. Wireless Pers Commun 98, 213–223 (2018). https://doi.org/10.1007/s11277-017-4864-1

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  • DOI: https://doi.org/10.1007/s11277-017-4864-1

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