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Active and Passive Electronic Components
Volume 2010 (2010), Article ID 591640, 6 pages
http://dx.doi.org/10.1155/2010/591640
Research Article

Investigation of RF Signal Energy Harvesting

Department of Electrical Engineering, American University of Sharjah, P.O. Box 26666 Sharjah, UAE

Received 3 May 2010; Accepted 25 October 2010

Academic Editor: Jianmin Miao

Copyright © 2010 Soudeh Heydari Nasab et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The potential utilization of RF signals for DC power is experimentally investigated. The aim of the work is to investigate the levels of power that can be harvested from the air and processed to achieve levels of energy that are sufficient to charge up low-power electronic circuits. The work presented shows field measurements from two selected regions: an urbanized hence signal congested area and a less populated one. An RF harvesting system has been specifically designed, built, and shown to successfully pick up enough energy to power up circuits. The work concludes that while RF harvesting was successful under certain conditions, however, it required the support of other energy harvesting techniques to replace a battery. Efficiency considerations have, hence, placed emphasis on comparing the developed harvester to other systems.