INTERACTION BETWEEN HUMAN AND NEAR-FIELD OF WIRELESS POWER TRANSFER SYSTEM | Zendy

Maja Škiljo | Zendy; Zoran Blažević | Zendy; Dragan Poljak | Zendy

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INTERACTION BETWEEN HUMAN AND NEAR-FIELD OF WIRELESS POWER TRANSFER SYSTEM

Author(s) -

Maja Škiljo,

Zoran Blažević,

Dragan Poljak

Publication year - 2016

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc16062005

Subject(s) - wireless power transfer , field (mathematics) , wireless , power (physics) , computer science , electrical engineering , engineering , physics , telecommunications , mathematics , quantum mechanics , pure mathematics

In this paper we provide new recommendations for a type of antenna design in applications where a human is present in the vicinity of a wireless power transfer (WPT) system by means of power transfer efficiency (PTE) and specific absorption rate (SAR). The interaction between a homogenous human model and different WPT systems is investigated at 13.56 MHz using spherical mode theory antenna model (SMT-AM) and full-wave numerical analysis. The human model exposure and the performance of the proposed WPT system are analyzed further for some typical scenarios. It is shown that the position in which the human model is closer to the receiver is favorable over the position closer to the transmitter, concerning both PTE and SAR. Also, the consideration of variable receiver load indicates that different levels of SAR coupled by degraded PTE can be expected. The proposed antennas are designed, and proof of concept WPT measurements are carried out.

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