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Impedance matching is very important technique to improve the efficiency of transmitting or receiving system not only for wireless communication system but also for wireless power transfer(WPT) system. However, most lumped matching circuits have been designed by using reactive components such as inductors and capacitors without consideration of their ohmic losses. An exact approach to design the lumped...
Not only the wireless power transfer technology replaces the conventional cable electricity charging, but also is it strongly expected to feed the movement body which maybe a mobile phone or a driven car. In this report, a system of driving mini 4WD known as a small car model will be challenged to be fed by wireless power. Usually, mini 4WD is supplied by using 2 size AA batteries. But we put a receiving...
A practical wireless power transmission system consisting of a large rectangular wire loop and a small square wire loop with a parasitic square helical coil is proposed for use as an efficient evanescent resonant coupling wireless power transmission system in an indoor environment. In addition, a full wave-based numerical analysis on the resonant frequency of and the power transmission efficiency...
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