Abstract: A mobile communication device is provided. The mobile communication device includes a housing which includes a first edge and a second edge, the first edge extending in a first direction and the second edge extending from one end of the first edge in a second direction perpendicular to the first direction, a wireless communication circuit, and a conductive member, wherein the housing includes a first conductive portion forming a part of the first edge and having a predetermined length, and a second conductive portion forming an inner frame of the mobile communication device, at least a part of the second conductive portion is spaced apart from the first conductive portion, and includes an indentation formed to correspond to the protrusion of the first conductive portion, and the wireless communication circuit supplies power to the protrusion to transmit/receive a wireless signal through the first conductive portion, the second conductive portion, or at least a part of the conductive member.