A wearable textile antenna for wireless power transfer by magnetic resonance

The paper presents a wearable textile antenna embroidered on a fabric for wireless power transfer systems. A planar spiral coil was generated with the conductive thread on a cotton substrate, and was connected to a rectifier circuit fabricated on flexible polyethylene terephthalate film to constitut...

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Bibliographic Details
Published inTextile research journal Vol. 88; no. 8; pp. 913 - 921
Main Authors Heo, Eunah, Choi, Keun-Yeong, Kim, Jooyong, Park, Jong-Hu, Lee, Hojin
Format Journal Article
LanguageEnglish
Published London, England SAGE Publications 01.04.2018
Sage Publications Ltd
Subjects
Antennas
Authorship
Copper
Cotton
Curvature
Dietary fiber
Efficiency
Energy
Human body
Magnetic resonance
Materials research
Polyethylene
Polyethylene terephthalate
Power efficiency
Rectifiers
Sensors
Sewing
Silver
Substrates
Wearable technology
Wireless power transmission
magnetic resonance
textile coil
wireless power transfer
conductive thread
embroidered antenna
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Summary:The paper presents a wearable textile antenna embroidered on a fabric for wireless power transfer systems. A planar spiral coil was generated with the conductive thread on a cotton substrate, and was connected to a rectifier circuit fabricated on flexible polyethylene terephthalate film to constitute a bendable receiver by the magnetic resonance. At a resonance frequency of 6.78 MHz, the proposed system could achieve −5.51 dB transfer efficiency and 12.75 mW power transmission at a distance of 15 cm. It was also demonstrated that the resonance frequency and transmitted power of the proposed system could be maintained as the same even when the system was bent conformingly to the surface curvature of the human body model for a bending radius up to 50 mm or larger.
ISSN:0040-5175
1746-7748
DOI:10.1177/0040517517690626