Electronic device for selectively using coils supporting power sharing

A method for operating an electronic device, the method comprising:

• acquiring identification information of an external electronic device in a first state in which a first coil and a second coil are connected in parallel to a transceiver circuit;
• connecting at least one of the first coil or the second coil to the transceiver circuit based on the identification information;
• and
• controlling the transceiver circuit to:
• transmit a power signal to the external electronic device, or
• receive a power signal from the external electronic device in a second state in which at least one of the first coil or the second coil is connected to the transceiver circuit.

An electronic device comprising:

• a power management circuit;
• an antenna including a first coil and a second coil;
• a transceiver circuit configured to transmit a power signal received from the power management circuit to the antenna and to transmit a power signal received from the antenna to the power management circuit, the transceiver circuit including a first transceiver terminal and a second transceiver terminal;
• a switch;
• and
• a control circuit electrically connected to the switch and the transceiver circuit,
• wherein a first end of the second coil is connected to the first transceiver terminal,
• wherein a second end of the second coil is connected to the second transceiver terminal,
• wherein a first end of the first coil is connected to the first transceiver terminal,
• wherein a second end of the first coil is connected to the second transceiver terminal through the switch, and
• wherein the control circuit is configured to open or close the switch based on identification information of an external electronic device received from the antenna through the transceiver circuit.