Wireless power transmitting device and method for controlling the same

A method for controlling a wireless power transmitter, the method comprising:

• storing, as reference information, information of a first reflected signal of a pilot signal sent out at a first time;
• sending out a pilot signal at a second time;
• and
• comparing the reference information with information of second reflected signals of the pilot signal sent out at the second time;
• and
• determining a position of a target for detection based on a result of the comparison.

A wireless power transmitting device, comprising:

• a plurality of antennas;
• a communication circuit;
• and
• a processor configured to:
• control to receive, through the communication circuit, a first communication signal from a first antenna of an electronic device and to receive, through the communication circuit, a second communication signal from a second antenna of the electronic device,
• determine whether an obstacle is positioned between the electronic device and the wireless power transmitting device using a first time of reception of the first communication signal and a second time of reception of the second communication signal, and
• upon determining that the obstacle is positioned between the electronic device and the wireless power transmitting device, control to transmit, through the plurality of antennas, power to the electronic device while avoiding the obstacle.