Design, Simulation and Measurement of Flexible PCB Coils for Wearable Device Wireless Power Transfer
In this paper, we design and analyze flexible wireless power transfer (WPT) coils for flexible wearable devices. The 3 cm by 3 cm flexible coils are designed using polyimide substrate. The coil is designed as thin as possible to achieve higher Q-factor and power transfer efficiency (PTE). Furthermore, we analyzed the mutual inductance between the coils with a bending radius of a receiver (Rx) coil of infinite, 26 mm and 13 mm by considering the curvature of the human wrist. As the results, the simulation results of the flexible coil are verified with the measurement results using Z-parameter analysis in the frequency range from 1 MHz to 50 MHz. In conclusion, we verify the mutual inductance simulation results with the measurement results within the average error of 2.85%.
S. Jeong et al., "Design, Simulation and Measurement of Flexible PCB Coils for Wearable Device Wireless Power Transfer," Proceedings of the 2018 IEEE Wireless Power Transfer Conference (2018, Montreal, Canada), Institute of Electrical and Electronics Engineers (IEEE), Jun 2018.
The definitive version is available at https://doi.org/10.1109/WPT.2018.8639305
2018 IEEE Wireless Power Transfer Conference, WPTC 2018 (2018: Jun. 3-7, Montreal, Canada)
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Bending Radius; Flexible PCB Coil; Flexible Sheets; Magnetic Resonance; Mutual Inductance; Wearable Devices; Wireless Power Transfer
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2018 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
07 Jun 2018