According to an embodiment, an electronic device is provided. the electronic device may comprise: a housing including a conductive portion and a non-conductive portion; a first substrate; at least one electronic component disposed on the first substrate; a second substrate electrically coupled to the first substrate, the second substrate including a first surface facing a first direction and a second surface facing a second direction opposite to the first direction; at least one contact member disposed between the first surface of the second substrate and the conductive portion of the housing; and a support member disposed between the first surface of the second substrate and the non-conductive portion of the housing.