Wireless power transfer(WPT) system can be constructed by using traditional copper helix wire, printed planar loop or other similar structure. In this presentation, we introduce a new type of WPT resonator made of high permitivity ceramic sphere. In this project, WPT is achived via strongly coupled magnetic resonances. Being properly excited, a ceramic sphere can work in different modes. We investigate two basic modes: magnetic dipole mode and magnetic quadrapole mode. As a result, 50% efficiency can be achieved at the distance of 30cm using two ceramic spheres with diameter of 16cm and working frequency of 300MHz.
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