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Wireless Power Transmission to a Buried Sensor in Concrete

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2 Author(s)
Shams, K.M.Z. ; South Carolina Univ., Columbia ; Ali, M.

The feasibility of sending wireless power to a buried sensor antenna within concrete was studied. A receive patch rectenna with 75.8% conversion efficiency was designed for operation at 5.7 GHz. The received DC power at the rectenna was measured within dry and wet concrete samples with various cover thicknesses and air-gaps. For the rectenna buried within 30 mm of the concrete, the received DC power was 10.37 mW, which was about 70% of the received DC power in free-space.

Published in:

Sensors Journal, IEEE  (Volume:7 ,  Issue: 12 )