Wireless power trasmitting method and apparatus using dual-loop in-phase feeding

A wireless power transmitting method which is implemented by a wireless power transmitting apparatus, the method comprising:

• generating a Radio Frequency (RF) signal;
• amplifying the generated RF signal;
• performing impedance matching on the amplified signal;
• providing a resultant signal to a first resonator using a first feeding loop and to a second resonator using a second feeding loop;
• and
• transmitting wireless power to a wireless power receiving apparatus by using the first and second resonators,
• wherein the first and second feeding loops are formed in a manner that allow magnetic fields respectively generated by the first and second resonators to be excited in the same direction and in phase.

A wireless power receiving apparatus comprising:

• a plurality of resonators, each configured to receive wireless power from a wireless power transmitting apparatus based on magnetic resonance;
• a matching circuit configured to be connected to the plurality of resonators to perform impedance matching;
• and
• a rectifier configured to rectify current input through the matching circuit,
• wherein the plurality of resonators are formed in a manner that allows magnetic fields respectively generated by the plurality of resonators to be excited in the same direction and in phase.