Propagation Analysis Using Plane Coupler for 2D Wireless Power Transmission Systems

Hiroshi SHINODA  Takahide TERADA  

IEICE TRANSACTIONS on Electronics   Vol.E96-C    No.8    pp.1041-1047
Publication Date: 2013/08/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.1041
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
coupler,  evanescent wave,  standing wave,  surface wave,  wireless power transmission,  

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A plane coupler has been developed for a two-dimensional (2D) wireless power transmission. This coupler can construct a continuous wireless power transmission system for mobile devices due to its small, light characteristics. This coupler has two elements connected with a 2D waveguide sheet, and coupling capacitances between the elements and the sheet decrease the coupler size by reducing their resonance frequencies. A propagation loss of -10.0 dB is obtained using the small 0.025-λ2 coupler. Continuous operation of the mobile device is demonstrated by applying wireless power transmission to the 2D waveguide sheet with the small plane coupler.