2016 · 35 citations · 8 references
EngineeringBiomedical EngineeringElectrical EngineeringPower ElectronicsSensorsWireless CommunicationsBattery TechnologyImplant TechnologyImplantable Biomedical DevicesImplantable MicrodevicesImplantable MicrosystemsWireless Power TransferBiomedical Wireless Power TransferCoil DesignImplantable Wireless Power TransferMiniaturized Implantable SystemsPower EfficiencyResonant Power TransferWireless Power Transfer CoilsWireless Power Transfer For Implants
Continuous health monitoring has become feasible, largely due to miniature implantable sensor systems such as [1]. To recharge batteries of such systems, wireless power transfer is a popular option since it is non-invasive. However, there are two main challenges: 1) strict safety regulations of incident power on human tissue; 2) small coil size for better biocompatibility. These issues reduce the received power at the coil, make it difficult to obtain sufficient power for implanted devices, and call for high power-efficiency (ηP)-transfer techniques, especially at very low received power levels.
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