Title :
Optimum Wireless Powering of Sensors Embedded in Concrete
Author :
Jiang, Shan ; Georgakopoulos, Stavros V.
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Int. Univ., Miami, FL, USA
Abstract :
The optimization of wireless powering of sensors embedded in concrete is studied here. Our analytical results focus on calculating the transmission loss and propagation loss of RF waves penetrating into concrete at different humidity conditions. Specifically, this analysis leads to the identification of an optimum frequency range within 20-80 MHz that is validated through antenna coupling full-wave EM simulations. Also, an optimized rectenna is designed in order to calculate the battery charging time. Finally, the effects of reinforced bars to RF power transfer are analyzed.
Keywords :
concrete; radiowave propagation; rectennas; sensors; RF power transfer; RF waves; antenna coupling full-wave EM simulation; battery charging time; concrete; humidity conditions; optimization; optimized rectenna; optimum wireless powering; propagation loss; reinforced bars; sensors; transmission loss; Concrete; Couplings; Humidity; Propagation losses; Sensors; Wireless communication; Wireless sensor networks; Concrete; energy transmission; rebar; rectenna; wireless sensors;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2011.2173147
