ELECTRONIC DEVICE INCLUDING ANTENNA

An electronic device according to various embodiments includes: a housing; a flexible display; a key button disposed in a first region of a side surface of the first portion and including at least one protrusion extending toward an inner side of the first portion; and an antenna structure disposed at an inner side of the first portion with respect to the first region, in which the housing includes the first portion, a second portion, and a connection portion disposed between the first portion and the second portion, the second portion is rotatably coupled to the first portion through a connecting portion, and the antenna structure includes: at least one metal dome disposed on a substrate at a position corresponding to the at least one protrusion; the metal dome comprises a substrate and a plurality of conductive patches, the plurality of conductive patches are arranged on the conductive layer of the substrate, and at least one metal dome can be arranged at a corresponding position among the plurality of condu