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Current State of Research at Imperial College London in RF Harvesting and Inductive Power Transfer

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Title: Current State of Research at Imperial College London in RF Harvesting and Inductive Power Transfer
Authors: Pinuela, M
Yates, DC
Mitcheson, PD
Lucyszyn, S
Item Type: Conference Paper
Abstract: This paper presents simulation and experimental results for ambient RF energy harvesting and Inductive Power Transfer systems. End-to-end and dc-load efficiency measurements and calculations were performed to demonstrate the capabilities of both systems, respectively. An RF spectral survey was conducted across all the 270 underground stations in London. DTV, GSM900, GSM1800 and 3G were selected as the highest contributors and single banded rectennas were fabricated for all frequencies. Ground level measurements demonstrate that more than 50 stations have suitable channel power levels per band to allow ambient RF energy harvesting. Efficiencies of up to 40% were achieved with a single banded rectenna operating at GSM 900, and efficiencies higher than 20% were achieved for TV and 3G. Furthermore a high frequency, semi-resonant Class-E driver was used to transfer 60 W of power across a 30 cm distance with a dc-load efficiency of 66%.
Issue Date: 31-May-2012
URI: http://hdl.handle.net/10044/1/10270
Start Page: 1
End Page: 4
Copyright Statement: © 2012 The authors.
Conference Name: 2nd International Workshop on Wireless Energy Transport and Harvesting
Conference Location: Leuve, Belgium.
Publication Status: Published
Publisher URL: http://www.iwweth.org/
Start Date: 2012-05-31
Finish Date: 2012-05-31
Conference Place: Leuven, Belgium
Appears in Collections:Electrical and Electronic Engineering