An electronic device includes: a frame including a side wall and at least partially forming an antenna; a bracket provided within the frame; a first printed circuit board provided on the bracket and including at least one grounding portion; a second printed circuit board provided within the frame; and a screw, where the second printed circuit board includes: a first portion coupled to the first printed circuit board; an extension portion extending from the first portion between the side wall of the frame and the bracket; a second portion extending from the extension portion between the first printed circuit board and the bracket; and a conductive trace extending from the first portion to the second portion through the extension portion, and where the conductive trace is electrically connected to the at least one grounding portion of the first printed circuit board in the second portion.