Wireless power transmission to sensors in reinforced concrete via Magnetic Resonance

Wireless power transmission by Strongly Coupled Magnetic Resonance (SCMR) by spiral resonators to sensor in reinforced concrete 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 in two different rebar configuration is reported. The concrete material is modeled for various humidity levels by extended Debye´s model. The efficiency analyzed for different depths and rebar configuration.