An electronic device comprising: a display configured to display information; a circuit board; a frame disposed on the circuit board along sidewalls of the electronic device, surrounding the display, and comprising a connector; a feeding structure formed on the circuit board; and an antenna unit disposed on the circuit board, at a predetermined angle with respect to a surface of the circuit board, wherein the antenna unit is disposed apart from an exterior of the frame in electrical connection with the feeding structure, wherein the antenna unit includes a slot antenna unit, and wherein the slot antenna unit comprises: a first slot formed inside the slot antenna unit; a first antenna plate forming a top end of the first slot, extended in a length direction of the frame, and including a second slot inside the first antenna plate; a second antenna plate forming a bottom end of the slot, extended in the length direction of the frame, and including a third slot inside the second antenna plate; a pair of link portions formed at respective ends of the first and second antenna plates, wherein any one of the pair of link portions connects the first antenna plate and the second antenna plate; and a connection portion formed on the second antenna plate, wherein the connection portion is configured to electrically connect the slot antenna unit to the connector provided in the frame. a display configured to display information; a circuit board; a frame disposed on the circuit board along sidewalls of the electronic device, surrounding the display, and comprising a connector; a feeding structure formed on the circuit board; and an antenna unit disposed on the circuit board, at a predetermined angle with respect to a surface of the circuit board, wherein the antenna unit is disposed apart from an exterior of the frame in electrical connection with the feeding structure, wherein the antenna unit includes a slot antenna unit, and wherein the slot antenna unit comprises: a first slot formed inside the slot antenna unit; a first antenna plate forming a top end of the first slot, extended in a length direction of the frame, and including a second slot inside the first antenna plate; a second antenna plate forming a bottom end of the slot, extended in the length direction of the frame, and including a third slot inside the second antenna plate; a pair of link portions formed at respective ends of the first and second antenna plates, wherein any one of the pair of link portions connects the first antenna plate and the second antenna plate; and a connection portion formed on the second antenna plate, wherein the connection portion is configured to electrically connect the slot antenna unit to the connector provided in the frame. a first slot formed inside the slot antenna unit; a first antenna plate forming a top end of the first slot, extended in a length direction of the frame, and including a second slot inside the first antenna plate; a second antenna plate forming a bottom end of the slot, extended in the length direction of the frame, and including a third slot inside the second antenna plate; a pair of link portions formed at respective ends of the first and second antenna plates, wherein any one of the pair of link portions connects the first antenna plate and the second antenna plate; and a connection portion formed on the second antenna plate, wherein the connection portion is configured to electrically connect the slot antenna unit to the connector provided in the frame.