How is the principle of resonant applied in wireless charging technology

The principle of resonance is applied in wireless charging technology through the use of resonant coupling. Resonant coupling involves the use of two coils that are tuned to the same frequency, creating a resonant circuit. One of the coils is placed in the charging pad or base station, while the other coil is placed in the device being charged. When the two coils are brought close together, they create a magnetic field that resonates at the same frequency, allowing for efficient transfer of energy between the two coils. This resonance allows for a greater transfer of energy over a longer distance compared to traditional inductive charging, which typically requires close proximity between the charging pad and device. Resonant wireless charging technology is becoming increasingly popular in devices such as smartphones, electric vehicles, and medical devices.