| 摘要 |
<p>The wireless power transmitter comprises a power substrate, a ground substrate, and a connection part. The power substrate receives power. The ground substrate is connected to ground voltage and arranged to face the power substrate. The connection part connects the power substrate with the ground substrate, and has a dielectric material inside. The wireless power transmitter transmits power wirelessly to the outside through the resonance of a cavity between the power substrate and the ground substrate. Since the wireless power transmitter using cavity resonance utilizes cavity resonance of a PCB itself, a cavity resonance frequency is determined when the size and shape of a substrate are determined, therefore problems such as resonance point change by external factors can be prevented, and transmission efficiency can be improved.</p> |
