Disclosed is an electronic device having a space formed between front and rear surfaces thereof, the electronic device comprising: a first cover arranged on the front surface; a second cover arranged on the rear surface; a frame surrounding the first cover and the second cover; and a multilayered circuit board coupled to the second cover so as to constitute the housing of the electronic device, wherein the multilayered circuit board may comprises an insulated metal layer having a surface coupled to the second cover and a substrate-structured antenna device having a surface coupled to the insulated metal layer.