A wireless charging system and a method for tuning the wireless charging system is described. The system can include matching circuitry coupled to a transmission coil and a controller coupled to the matching circuitry. The transmission coil can have a load inductance. The controller can control the matching circuitry to adjust a voltage associated with the capacitance value based on the load inductance to cause the voltage associated with the capacitance value and a current associated with the capacitance value to be in phase.