期刊
APPLIED PHYSICS EXPRESS
卷 9, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.7567/APEX.9.044101
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资金
- National Research Foundation (NRF) Grant - Korean Government (MSIP) [2015R1A5A1037656]
- Basic Science Research Program through the NRF [2015R1A2A2A03004160]
- National Research Foundation of Korea [2015R1A2A2A03004160] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this letter, we propose a magneto-inductive wave (MIW) metamaterial cavity for enhanced mid-range wireless power transfer (WPT) applications. Cavity operation is achieved by controlling the propagation of MIWs at lower megahertz frequencies. The cavity is realized by omitting a cell and thereby breaking the periodicity of the closely coupled metamaterial slabs. The cavity in the proposed metamaterial effectively confines the MIWs into a subwavelength region. Consequently, it localizes the magnetic field in the WPT region and provides enhanced power transmission. When the proposed MIW metamaterial cavity is used, the measured efficiency improves significantly from 8.7 to 54.9%. (C) 2016 The Japan Society of Applied Physics
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