Abstract
In this paper, the characterization of wireless power charging receiver for mobile device developed based on magnetic resonance coupling is presented. The receiver is constructed of an electromagnetic waves radiator which is implemented by use of microstrip patch on a dielectric substrate to operate at frequency of around 10MHz and a rectifier circuit which comprises of a voltage doubler circuit. Prior the hardware realization, the designed of receiver is performed through simulation to investigate the influence of level and frequency of input voltage to the DC voltage of rectifier circuit output. The radiator efficiency and performance of rectifier circuit are two things that are focused in the investigation. From the experimental characterization, it shows that the radiator efficiency for a considerable gap is more than 37% for some level of varied input AC signal. While the DC voltage of rectifier circuit output has the voltage deviation less than 2% for operating frequency of input voltage varied up to 20%. In addition, it is demonstrated that the receiver is able to start charging a battery of mobile phone by producing 4.12VDC at the output of receiver with the gap separation between 2 radiators of 0.8mm.
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