A hardware demonstration of wireless power transmission based on retro-reflective beamforming

Sha, Shaoshu; Lu, Mingyu

doi:10.1109/aps.2012.6349063

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2015

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“…This letter presents an experimental verification of the retro‐reflective beamforming scheme proposed in . Whereas our prior experimental efforts made use of conventional antenna arrays in the wireless power transmitter, the wireless power transmitter in this letter is comprised of spatially distributed antennas. The primary advantage of using spatially distributed antennas in the wireless power transmitter is that an antenna is not allowed to transmit power if its line‐of‐sight path to the wireless power receiver is blocked by any obstacle (if the obstacle is a human being, deactivation of the blocked antenna would avoid illuminating wireless power directly onto human ).…”

Section: Introductionmentioning

confidence: 99%

A Distributed retro‐reflective beamformer for wireless power transmission

Wang

Guo

et al. 2015

Micro & Optical Tech Letters

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This letter demonstrates a wireless power transmission scheme based on distributed retro‐reflective beamforming experimentally. The wireless power transmitter, which includes eight antennas distributed in space, receives pilot signals from a mobile device and then focuses radio frequency power onto the device's location through analyzing the pilot signals. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1873–1876, 2015

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Section: Introductionmentioning

confidence: 99%