a first housing including a first surface and a second surface perpendicular to the first surface at a first edge, and a first conductive area, the first conductive area including a first portion of a first slit extending from a point on the first surface to the first edge;

a second housing slidably connected to the first housing and including a third surface including a second conductive area, the second conductive area including a second slit extending to an edge of the second housing corresponding to the first edge of the first housing;

a printed circuit board (PCB) disposed in the electronic device; and

a wireless communication circuit disposed on the PCB,

wherein, in a first state in which the second housing is slid in a first direction to be adjacent to the first housing, at least a portion of the first portion of the first slit overlaps the second slit when viewed in a second direction perpendicular to the first surface of the first housing, and

wherein the wireless communication circuit is configured to transmit and/or receive a signal of a first frequency band based on an electrical path including the first portion of the first slit.