An electronic device comprising an antenna and a segmentation part is provided. The electronic device includes a conductive housing, a printed circuit board arranged in the internal space of the conductive housing and comprising a wireless communication module, a conductive plate on which the printed circuit board is arranged, a segmentation part for segmenting at least a portion of the conductive housing, an opening arranged between the conductive housing and the conductive plate, an antenna formed via the segmentation part and the opening, and a non-conductive member for filling at least a portion of the segmentation part and the opening. The distance between a mutually facing end surface of the antenna and end surface of the conductive plate is configured to vary.