According to an exemplary embodiment of the present disclosure, an electronic device may include a housing having a first side facing a first direction, and a second side facing a second direction opposite to the first direction, a communication circuit disposed inside the housing, a display exposed through the first side of the housing, a conductive plate formed adjacent to the second side of the housing, a conductive coil formed inside the conductive plate when viewed from a top of the second side, and having a plurality of turns electrically connected to the communication circuit, a first non-conductive material formed inside the conductive plate when viewed from the top of the second side, and disposed at least partially between the conductive plate and the conductive coil and/or between the plurality of turns of the conductive coil, and a second non-conductive material for forming at least one part of the second side, and covering the conductive plate, the conductive coil, and the first non-conductive material. Various other exemplary embodiments are also possible.