Delivering electrical power wirelessly without exceeding Specific Absorption Rate (SAR) limits.
Inductive coils operating at 13.56 MHz induce eddy currents in vascularized scalp tissue. Coil geometry is optimized with ferrite shielding to keep localized SAR strictly below 2.0 W/kg.
Coupled resonant coils maintain over 72% electrical transfer efficiency despite angular misalignment and varying scalp thickness between patients.