Wireless powering of device embedded in concrete via Magnetic Resonance

Wireless power transmission by Strongly Coupled Magnetic Resonance (SCMR) with spiral resonators in air-concrete interface is analyzed. The power transfer mechanism consists of two self-resonant spirals and two single loops in contrast to the two resonant loops traditionally used in resonant inductive systems. The efficiency of wireless power transmission from a source in air to a device embedded in concrete via SCMR is reported. The concrete material is modeled at various humidity levels with extended Debye´s model. The efficiency of the SCMR is also analyzed for different depths of concrete.