An electronic device (101, 200) comprising: a housing including: a hinge module; a first housing connected to the hinge module and including a first surface, a second surface facing in a direction opposite to the first surface, and a first lateral member surrounding a first space between the first surface and the second surface; and a second housing (210, 220) connected to the hinge module and including a third surface, a fourth surface facing in a direction opposite to the third surface, and a second lateral member surrounding a second space between the third surface and the fourth surface, wherein the first and second housings (210, 220) are rotatably coupled to each other via the hinge module to be in a folded state or an unfolded state, wherein the first and third surfaces face a same direction in the unfolded state, and wherein the second and fourth surfaces face each other in the folded state; a flexible display disposed over the first and third surfaces; at least one conductive pattern disposed in the first space; characterized in that the electronic device further comprises at least one conductor disposed at a first position in the second space corresponding to the at least one conductive pattern such that the at least one conductor is capacitively coupled to the at least one conductive pattern when the electronic device (101, 200) is in the folded state, and the at least one conductor is spaced apart from the at least one conductive pattern when the electronic device (101, 200) is in the unfolded state thereby disconnecting the conductive coupling therebetween; and a wireless communication circuit electrically connected to the at least one conductive pattern in the first space. a hinge module; a first housing connected to the hinge module and including a first surface, a second surface facing in a direction opposite to the first surface, and a first lateral member surrounding a first space between the first surface and the second surface; and a second housing (210, 220) connected to the hinge module and including a third surface, a fourth surface facing in a direction opposite to the third surface, and a second lateral member surrounding a second space between the third surface and the fourth surface, wherein the first and second housings (210, 220) are rotatably coupled to each other via the hinge module to be in a folded state or an unfolded state, wherein the first and third surfaces face a same direction in the unfolded state, and wherein the second and fourth surfaces face each other in the folded state; a flexible display disposed over the first and third surfaces; at least one conductive pattern disposed in the first space; characterized in that the electronic device further comprises at least one conductor disposed at a first position in the second space corresponding to the at least one conductive pattern such that the at least one conductor is capacitively coupled to the at least one conductive pattern when the electronic device (101, 200) is in the folded state, and the at least one conductor is spaced apart from the at least one conductive pattern when the electronic device (101, 200) is in the unfolded state thereby disconnecting the conductive coupling therebetween; and a wireless communication circuit electrically connected to the at least one conductive pattern in the first space.