Abstract
This paper presents the precise dosimetry for highly resonant wireless power transfer (HR-WPT) system using an anatomically realistic human voxel model. The dosimetry for the HR-WPT system designed to operate at 13.56 MHz frequency, which one of the ISM band frequency band, is conducted in the various distances between the human model and the system, and in the condition of alignment and misalignment between transmitting and receiving circuits. The specific absorption rates in the human body are computed by the two-step approach; in the first step, the field generated by the HR-WPT system is calculated and in the second step the specific absorption rates are computed with the scattered field finite-difference time-domain method regarding the fields obtained in the first step as the incident fields. The safety compliance for non-uniform field exposure from the HR-WPT system is discussed with the international safety guidelines. Furthermore, the coupling factor concept is employed to relax the maximum allowable transmitting power. Coupling factors derived from the dosimetry results are presented. In this calculation, the external magnetic field from the HR-WPT system can be relaxed by approximately four times using coupling factor in the worst exposure scenario.
Highlights
Wireless power transfer (WPT) technique using electromagnetic resonance phenomena has been proposed by MIT research team [1]
The highly resonant (HR) wireless power transfer (WPT) systems typically operate in the low MHz range of approximately 1 to 20 MHz, because this range is proper to reduce wire loss caused by the skin depth and to realize high resonant coils
The highly resonant wireless power transfer (HR-WPT) systems using the strong reactive near fields may induce high internal electric fields in a human body in the vicinity to the systems
Summary
Wireless power transfer (WPT) technique using electromagnetic resonance phenomena has been proposed by MIT research team [1]. The highly resonant (HR) WPT systems typically operate in the low MHz range of approximately 1 to 20 MHz, because this range is proper to reduce wire loss caused by the skin depth and to realize high resonant coils. Since this HR-WPT technique has been reported, there has been increasing interest in the commercialization of HR-WPT system.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
