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In this work we propose a method for maximization of the efficiency of an underwater wireless power transfer system that has to cope with load changes, quality factor and coupling coefficient deviations. By means of 3D electromagnetic simulation and numerical computation, parameter analysis is accomplished using different compensation methods, namely series-series, series-parallel and parallel-parallel...
Wireless power charging powers the storage device without any cords which makes the device more compact, water proof, easy to use and provide even more comfort. The efficiency of power transfer depends on many factors, few of them are quality factor of the inductor coil, coupling coefficient, distance between receiver and transmitter coil, impact of core used for the coil. This paper discusses about...
We deal with the design of a wireless power transfer link realized by coupled inductors. It is shown that, for given values of the coupling coefficient and quality factors, by specifying the desired input and output resistances we can find the values of the inductances that realize the maximally efficient wireless power transfer link. Numerical and experimental verifications of the proposed approach...
The significance of passive RFID labels is growing in logistic processes. While the initial aim was to identify items with an invariable identification code, new applications with enhanced functionality arise which need additional energy. This contribution investigates the requirements on an inductive coupled RFID radio link in order to provide a reliable power transmission under varying coupling...
Inductive coupling is a common way to wirelessly transmit data to medical implants. In such applications, the carrier frequency is often limited to tens of MHz which is able to well penetrate the skin. To achieve high data rate, the number of carrier cycles used to modulate each bit should be as small as possible. This usually requires lowering the quality factor (Q) of the data transmission network,...
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