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Wireless power transfer (WPT) technology has recently emerged as an innovative and promising technology, and its electromagnetic compatibility (EMC) has become a significant issue. In this study, we investigated the electromagnetic (EM) radiated emission and interference generated by WPT systems using resonant magnetic field coupling, especially in applications with multi-coil configurations. The...
Simultaneous switching current (SSC) drawn by integrated circuits (ICs) creates simultaneous switching noise (SSN) on power nets, which causes a number of SI/PI problems, such as reduced noise margin and eye opening with increased SSN. Analyzing the effects of SSC and SSN is especially important for ICs targeted for mobile applications whose operating frequency keeps on increasing with decreasing...
The hand-held resonant magnetic field charger (HH-RMFC) is a convenient equipment of charging the batteries without any electrical contact. Due to high coupling coefficient of HH-RMFC, the single phase power inverter with square wave encounter relatively small reactance at its harmonic frequencies. Thus, the current flowing through the Tx and Rx windings can be distorted. The distorted current with...
To overcome power distribution network (PDN) design challenges such as serious power noise, large system area burden, the wireless power transfer (WPT) system in the 3D package and IC is applied. In this study, the 3D multi-helix inductor is proposed for designing the 3D package and IC with a WPT scheme and an equivalent circuit modeling is also implemented. The fabricated package WPT system represents...
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