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A study on geometry effect of transmission coil for micro size magnetic induction coil

A study on geometry effect of transmission coil for micro size magnetic induction coil
Lee, KH[Lee, Kyung Hwa]Jun, BO[Jun, Byoung Ok]Kim, S[Kim, Seunguk]Lee, GJ[Lee, Gwang Jun]Ryu, M[Ryu, Mingyu]Choi, JW[Choi, Ji-Woong]Jang, JE[Jang, Jae Eun]
DGIST Authors
Lee, KH[Lee, Kyung Hwa]; Jun, BO[Jun, Byoung Ok]; Kim, S[Kim, Seunguk]; Lee, GJ[Lee, Gwang Jun]; Choi, JW[Choi, Ji-Woong]Jang, JE[Jang, Jae Eun]
Issue Date
Solid: State Electronics, 119, 45-49
Article Type
Article; Letter
EfficiencyImplantable DeviceImplantable DevicesImplants (Surgical)Inductive Power TransmissionMagnetismMicro CoilMicrocoilsMicrometer LevelsNew ApplicationsPower-Transmission EfficiencyPower TransmissionResonance FrequenciesTransferring MethodWireless Power Transfer
The effects of transmission (Tx) coil structure have been studied for micro-size magnetic induction coil. The size of the receiving (Rx) coil should be shrunk to the micrometer level for the various new applications such as micro-robot and wireless body implanted devices. In case of the macro-scale magnetic induction coil, the power transmission efficiency is generally considered to be higher as the inductance of the transmission coil became larger; however, the large size difference between macro-size Tx coil and micro-size Rx coil can decrease the power transmission efficiency due to the difference of resonance frequency. Here, we study a correlation of the power transmission with the size and distance between the macro-size Tx and micro-size Rx coils using magnetic induction technique. The maximum power efficiency was 0.28/0.23/0.13/0.12% at the distance of 0.3/1/3/5 cm between Rx and Tx coil. In addition, more efficient wireless power transferring method is suggested with a floating coil for the body implantable devices. The voltage output increased up to 5.4 mV than the original one Tx coil system. The results demonstrated the foundational wireless power transferring system with enhanced power efficiency. © 2016 Elsevier Ltd. All rights reserved.
Elsevier Ltd
Related Researcher
  • Author Jang, Jae Eun Advanced Electronic Devices Research Group(AEDRG)
  • Research Interests Nanoelectroinc device; 생체 신호 센싱 시스템 및 생체 모방 디바이스; 나노 통신 디바이스
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Department of Information and Communication EngineeringCSP(Communication and Signal Processing) Lab1. Journal Articles
Department of Information and Communication EngineeringAdvanced Electronic Devices Research Group(AEDRG)1. Journal Articles

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