An electronic device may include: a housing forming at least a portion of the exterior of the electronic device; a first printed circuit board (PCB) disposed in a first region formed by the housing; a second printed circuit board disposed in a second region formed by the housing; a first antenna module disposed in a third region formed by the housing and adjacent to at least a portion of the exterior; a bracket which fixes the first antenna module to the housing; a flexible printed circuit board (FPCB) which electrically connects the first printed circuit board to the first antenna module; and at least one coaxial cable which electrically connects the first printed circuit board to the second printed circuit board, wherein the at least one coaxial cable may be disposed so as to be stacked with the first antenna module with respect to the direction perpendicular to the rear surface of the electronic device and may be fixed to the bracket. Other various embodiments are possible.