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For wireless power transfer (WPT) systems transferring high power, both high efficiency and low magnetic field leakage have been regarded as the main design objectives to be achieved. For the first time, in this paper, we propose a new concept of hybrid loop-array structure and its design procedure to achieve high efficiency and low magnetic field leakage simultaneously in high-power WPT system. The...
In this paper, we present the analysis of electromagnetic interference (EMI) shielding effects of wireless power transfer (WPT) using magnetic resonance coupling for board-to-board level interconnection. Board-to-board WPT consists of source coil, receiver coil, and load which are manufactured on printed circuit board (PCB). The coil is expressed as a simple equivalent circuit model, of which the...
In this study, a three dimensional multi-helix inductor design with a size smaller than 10mm×10mm is proposed for package-level wireless power transfer (WPT) using magnetic resonance, and the performance of an inductor-to-inductor voltage transfer ratio (VTR) of 70.1 % is presented. The effect of the power distribution network (PDN) load impedance on the VTR is studied and verified through measurement...
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