论文标题
介电谐振器的轴向磁四极模式，用于全向无线电源传递
Axial Magnetic Quadrupole Mode of Dielectric Resonator for Omnidirectional Wireless Power Transfer
论文作者
论文摘要
为了以高效率实现全向无线功率转移，高Q因子发射器产生同质磁场至关重要。传统上，不同形状的正交线圈用于实现发射器。在本文中，我们基于具有巨大介电常数和低损耗的介电磁盘谐振器，开发了全向磁谐振无线电源传输系统，在轴向磁性四极模式下运行。实验证明，在接收器的所有角位置，在3 cm的转移距离上，在157 MHz的频率下，恒定功率传递效率为88％。还研究了多回收器充电的可能性，表明，对于传输磁盘谐振器，两个接收器之间的角度位置如何，总效率为90％。观察到生物组织对电场和磁场的最小暴露以及低比吸收率，这使得WPT系统更安全，可为较高的输入功率充电。
To achieve omnidirectional wireless power transfer with high efficiency, a high Q-factor transmitter generating homogeneous magnetic field is crucial. Traditionally, orthogonal coils of different shapes are used to realize transmitters. In this paper, we develop an omnidirectional magnetic resonant wireless power transfer system based on a dielectric disk resonator with colossal permittivity and low loss operating at axial magnetic quadrupole mode. The constant power transfer efficiency of 88% at the frequency of 157 MHz over the transfer distance of 3 cm for all angular positions of a receiver is experimentally demonstrated. The possibility of multi-receivers charging is also studied demonstrating a total efficiency of 90% regardless of angular position between two receivers with respect to the transmitting disk resonator. The minimized exposure of biological tissues to the electric and magnetic fields as well as a low specific absorption rate is observed that makes the WPT system safer for charging with higher input power.
