Electronic device including antenna

An electronic device comprising:

• a housing including a front cover, a rear cover facing a direction opposite to a direction in which the front cover faces, and a lateral member surrounding a space between the front cover and the rear cover, the lateral member including a conductive member including an inner surface and an outer surface;
• an antenna structure disposed in the space of the housing and including a substrate, and a plurality of antenna elements disposed at a first interval at the substrate;
• a display disposed in the space and configured to be visible from the outside through at least a part of the front cover;
• a plurality of through-holes penetrating from the inner surface to the outer surface and corresponding to the plurality of antenna elements;
• and
• a wireless communication circuit disposed in the space and configured to transmit or receive a radio signal in a specified frequency band through the antenna structure,
• wherein first opening portions of the plurality of through-holes formed in the inner surface are disposed at the first interval, and second opening portions of the plurality of through-holes formed in the outer surface are disposed at a second interval greater than the first interval, and
• wherein at least a part of the second opening portion is directed toward a space between the display and the lateral member.