NDLI: Reactive near field magnetic coupling utilizing a staggered phased array

Content Provider	IEEE Xplore Digital Library
Author	Williams, D. Manteghi, M.
Copyright Year	2011
Description	Author affiliation: Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, USA (Williams, D.; Manteghi, M.)
Abstract	A rise in the need for dynamic energy allocation has been associated with the saturation of available portable wireless electronic devices. Currently, the availability for transmitting this energy efficiently has been limited to a number of methods, including near field resonant magnetic coupling. Previous research with mid range (d≈4r) wireless power transfer has resulted in coupling efficiencies of close to 40%. In order to increase efficiency in transfer a more directive transmission system was developed using a phased array. Coupling networks for the phased array were optimized using a hybrid combination of a full wave Method of Moments simulation with circuit simulation. Results were validated in a full wave simulator, and field results were shown during resonance. S-parameter results show simulated transfer efficiencies of 70% (−1.5dB) for a phased array structure and 62.3% (−2.4dB) for a single feed structure. Single feed prototyping S-parameter results show coupling efficiencies of 25% (−5.9dB). All coupling measurements are at a distance 4r with reference to the largest transmitting coupler.
Starting Page	2453
Ending Page	2456
File Size	293884
Page Count	4
File Format	PDF
ISBN	9781424495627
ISSN	19471491
e-ISBN	9781424495634
DOI	10.1109/APS.2011.5997019
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Couplings Arrays Couplers Feeds Optimization Coils Wireless communication phased array magnetic resonant coupling S-parameter
Content Type	Text
Resource Type	Article

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