Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 26, Issue 9, Pages 741-743Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2016.2597194
Keywords
Fabric resonators; implantable devices; wearable devices; wireless power transfer; 3-coil system
Categories
Funding
- National Research Foundation (NRF) of Korea - Korea government [2013R1A2A2A01068058]
- National Research Foundation of Korea [2013R1A2A2A01068058] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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