NDLI: The lower-bound of electromagnetic leakage of 2D wireless power transmission

Content Provider	IEEE Xplore Digital Library
Author	Noda, A. Shinoda, H.
Copyright Year	2010
Description	Author affiliation: Department of Information Physics and Computing, the University of Tokyo, Japan (Noda, A.; Shinoda, H.)
Abstract	In two-dimensional communication (2DC), devices put on the surface of a two-dimensional waveguide sheet receive microwave power from the sheet through the couplers. This paper clarifies the condition that a resonant object extracts microwave power from the sheet with significant efficiency. A theoretical analysis presents that the higher intensity of electromagnetic field outside the sheet surface is required for the lower surface reactance. That leads to the fact that power extraction from the lower surface reactance inevitably causes the higher power dissipation by the sheet surface resistance. Considering an inequality between the dissipation and the power flowing out of the sheet, we can determine the lower-bound of the surface reactance for efficient power transmission. The minimal surface reactance determines the minimal power leakage ratio and the maximal transmitted power acceptable in terms of electromagnetic compatibility (EMC). In the case of our typical 2DC systems, the lower-bound of the surface reactance and the corresponding leakage ratio are estimated to be 0.32 Ω/sq. and $1.4×10^{−5},$ respectively for the 2DC sheet thickness of 2 mm. In the latter part of the paper we design a sheet with the surface reactance of 1.6 Ω/sq. and show an example of couplers applicable to the low reactance sheet.
Starting Page	138
Ending Page	144
File Size	683750
Page Count	7
File Format	PDF
ISBN	9781424479115
e-ISBN	9781424479108
DOI	10.1109/INSS.2010.5573992
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-15
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface impedance Insulation Surface resistance sensor network Power transmission two-dimensional communication Conductors Cavity resonators Electromagnetic fields wireless power transmission
Content Type	Text
Resource Type	Article

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