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Wireless power transfer (WPT) can provide a practical solution to powering implanted devices without requiring a power cable to puncture the skin. Whilst maximising link efficiency is normally the design aim of a WPT system in free space, there may be more suitable objectives if a receiver is implanted inside a patient, especially for devices with higher power consumption. This paper proposes alternative...
For mid-range inductive power transfer (IPT) systems, improving link efficiency entails operating in the multi-MHz region in order to increase coil Q factors. However, designing end-to-end systems at such frequencies poses challenges associated with the efficiency of the power electronics. This paper presents a set of design principles with the aim of achieving maximal DC-to-load efficiency of such...
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