An electronic device according to various embodiments may include: a column-shaped housing including a processor and a communication module comprising communication circuitry disposed therein; a rollable display wound on a column face of the housing, wherein a printed circuit board is disposed on the housing; an array antenna mounted or embedded on the printed circuit board as a module; and a director unit including at least one director comprising a conductive material corresponding to a beam being formed by the array antenna and disposed on at least a part of the rollable display in a state in which the rollable display is wound.