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Optimization of wireless power transmission through periodic reinforced concrete structures is studied here. Computational methods are applied to investigate the transmission and reflection coefficients for reinforced concrete slabs as a function of concrete slab thickness and rebar configurations at different frequencies. Electric field induced inside reinforced concrete is also examined. Specifically,...
Wireless embedded sensors are ideally suitable for monitoring concrete structures because of their small size and ability to measure various quantities inside concrete. Wireless power transmission for such sensors embedded in plain/reinforced concrete slab is studied here. The return loss and transmission loss of dipole and patch antennas are studied at typical RFID frequencies. Also, the antennas'...
Wireless communications for sensors embedded in lossy media are studied here. Our analytical formulations rely on the plane wave propagation models, and focus on calculating the transmission loss and propagation loss of RF waves penetrating various media. Our results illustrate the existence of optimum frequencies for RF communications with sensors inside fresh water, soil and concrete, while providing...
Two kinds of electrical models for concrete have been used to calculate the transmission loss, propagation loss and total loss of normal incidence and oblique incidence of wave. The value of these losses depends on the electrical properties of the concrete, frequency of wave and the incidence angle. When the wave is normal incident and the frequency is between 20-80 MHz, the sensor will receive significantly...
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