Abstract
Wireless power transfer (WPT) technology is widely used for various applications because of convenience and safety. Especially, medical implant devices such as a cochlear implant are one of the typical applications of the WPT technology. However, WPT systems have problems with electromagnetic field (EMF) leakage, which can cause electro-magnetic interference (EMI) issues in the human body. In this paper, we propose an additional shielding coil for the effective suppression of EMF radiation of a WPT system. The proposed method reduces the EMF leakage in operating frequency range. We verified that the proposed shielding coil reduced the EMF leakage by 5.1 dB using 3D EM simulation. Also, the power transfer efficiency (PTE) and link gain stability of the proposed cochlear implant WPT system are designed to work well with proposed shielding coil.
Recommended Citation
S. Hong et al., "Low EMF Design of Cochlear Implant Wireless Power Transfer System using a Shielding Coil," 2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020, pp. 623 - 625, article no. 9191460, Institute of Electrical and Electronics Engineers, Jul 2020.
The definitive version is available at https://doi.org/10.1109/EMCSI38923.2020.9191460
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Cochlear implant; Electromagnetic fields (EMFs); electromagnetic interference (EMI); Shielding coil; Wireless power transfer (WPT)
International Standard Book Number (ISBN)
978-172817430-3
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jul 2020
Comments
Ministry of Trade, Industry and Energy, Grant IITP-2018-2016-0-00291