WIRELESS POWER FEEDING UNIT, ELECTRONIC APPARATUS, AND METHOD OF CONTROLLING WIRELESS POWER FEEDING UNIT

摘要

A wireless power feeding unit includes a receiving antenna; a control circuit having a wireless communication function in accordance with a communication standard; an impedance matching circuit, connected between the receiving antenna and the control circuit, for impedance matching between the receiving antenna and the control circuit; a conversion circuit converting alternate-current power into a direct-current voltage; a resonant circuit connected between the receiving antenna and the conversion circuit, receiving, in a resonant condition, electromagnetic energy via the receiving antenna, and outputting alternate-current power; and a switch circuit, based on a control signal from the control circuit, connecting the receiving antenna with the impedance matching circuit or the resonant circuit selectively. The control circuit controls the switch circuit so as to connect the receiving antenna with the impedance matching circuit for wireless communication and connect the receiving antenna with the resonant circuit for wireless power feeding.