Resonant inductive coupling

Resonant inductive coupling is a method of wireless energy transfer where two coils—one connected to a power source and the other to a device—are tuned to the same natural frequency, or resonance. When the transmitting coil is energized, it creates an oscillating magnetic field. If the receiving coil resonates at the same frequency, it efficiently captures energy from this magnetic field, allowing power to transfer wirelessly. This process is used in applications like wireless charging pads for smartphones, offering efficient energy transfer over short distances by maximizing resonance between the coils.