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Wireless power transfer provides a safe and robust way for powering biomedical implants, where high efficiency is of great importance. A new wireless power transfer technique using optimal resonant load transformation is presented with significantly improved efficiency at the cost of only one additional chip inductor component. The optimal resonant load condition for the maximized power transfer efficiency...
Flow rate monitoring provides an indication for early intervention of vascular graft degradation or failure used in lower limb bypasses and renal haemodialysis. This paper presents an inductively powered implantable blood flow sensing microsystem with bidirectional telemetry capability, which fully integrates the silicon nanowire (SiNW) sensor with tunable giant piezoresistivity, the ultra-low-power...
Wireless powering to implantable biomedical devices is highly desirable due to obviation of batteries or piercing wirings. This paper presents an implantable inductively powered front-end operating at 13.56MHz carrier frequency for biomedical applications, with the capabilities of power transfer, clock extraction and bidirectional command/data communication. The system consideration including the...
This paper describes a closed loop wireless inductive power transfer system for an implantable brain machine interface. The proposed system is designed to ensure optimal power transfer by an off-body unit, battery powered, to an in-body implanted unit while guarantying a minimum transmitted power level for proper operation and a maximum level to avoid brain tissue damage due to implanted electronics...
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