Magnetic Resonant Three-Coil WPT System Between Off/In-Body for Remote Energy Harvest

In this letter, the effect of the human body in a magnetic resonance wireless power transfer (MR-WPT) system for wearable and implantable devices is studied. To implement the experiment, muscle-mimicking liquid is configured with parameters similar to those of the human body. The transmitter part is...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2016-09, Vol.26 (9), p.741-743
Main Authors: Seok Hyon Kang, Jung Han Choi, Harackiewicz, Frances J., Chang Won Jung
Format: Article
Language:English
Subjects:
3-coil system
Air gaps
Atmospheric modeling
Energy harvesting
Fabric resonators
Human body
implantable devices
Liquids
Magnetic resonance
Microwaves
Pacemakers
Receivers
Surgical implants
System effectiveness
Transmitters
wearable devices
wireless power transfer
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Summary:In this letter, the effect of the human body in a magnetic resonance wireless power transfer (MR-WPT) system for wearable and implantable devices is studied. To implement the experiment, muscle-mimicking liquid is configured with parameters similar to those of the human body. The transmitter part is located outside the human body (in the air), and the receiver part is implanted in the liquid. The proposed 3-coil MR-WPT system, which operates at 6.78 MHz shows effectively higher transfer efficiencies compared with a 4-coil MR-WPT system at near transfer distance which is the predicted position for a pacemaker. The results indicate that the proposed system with optimized receiver using air-pocket has potential applications in off/in-body devices that benefit from remote energy harvesting, especially at near distances such as pacemakers.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2016.2597194