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Novel designs for high frequency radio frequency identification cards comprise an intermediate circuit between the main coil and chip, such that the chip is not physically connected to the coil on card which reduces costs of production, enhances the card’s robustness against mechanical stress and improves communication capabilities. Based on the Bode–Fano limit, we carry out a theoretical analysis...
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...
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