Application methods of metamaterials in wireless power transfer

作者：Yao, Chen; Ma, Dianguang; Tang, Houjun; Zhang, Yingyi; Cai, Weikun

来源：Transactions of China Electrotechnical Society, 2015, 30(19): 110-119.

• Constitutive parameters
• Coordinates transformation
• Electromagnetic parameters
• Finite element simulations
• Mutual inductance
• Negative refraction effects
• Principle modeling
• Wireless power transfer

The design methods and most related theories of metamaterials applied in wireless power transfer are elaborated. Three important theories, i. e. the negative refraction effect, the coupling model of magnetic dipoles, and the coordinates transformation theory, are introduced to explain the mechanism of improving the performance of wireless power transfer by metamaterials. In addition, two design methods, including the principle model method and the S-parameters retrieval method, are presented to illustrate the realization of specific electromagnetic constitutive parameters. The principle model method is theoretically derived for simple micro-structures, which has some inspiration significance for acquiring the electromagnetic parameters. And S-parameters retrieval method is more suitable for practical designs and complicated metamaterial micro-structures with the help of finite element simulation and retrieval equations.

• 出版日期2015
• 单位上海交通大学