ELECTRONIC DEVICE INCLUDING ANTENNA

According to certain embodiments, an electronic device comprises: a housing; and a printed circuit board positioned within the housing, and having a conductive pattern inside the printed circuit board, the printed circuit board having a first surface and a second surface opposite to the first surface, wherein the printed circuit board comprises: a first conductive layer located closer to the first surface than to the second surface and comprising a first antenna element and a second antenna element, wherein the first antenna element and the second antenna element are nonoverlapping; a second conductive layer forming a ground plane and located closer to the second surface than the first conductive layer; and a dielectric located between the first conductive layer and the second conductive layer, and wherein the conductive pattern: electrically connects to the ground plane through one or more conductive vias included in the printed circuit board, is disposed between the first conductive layer and the second conductive layer, physically separated from the first conductive layer and the second conductive layer, at least partially overlaps with the first antenna element when viewed from above the first surface, and comprises an opening.