Electronic device including antenna

An electronic device comprising:

• a housing comprising a conductive portion that forms at least a portion of a side surface of the housing, the conductive portion comprising at least one opening;
• an antenna module in the housing, the antenna module comprising:
• a substrate comprising a first substrate surface;
• and
• a plurality of antenna elements disposed at the substrate and configured to form a beam pattern in a direction in which the first substrate surface faces, wherein the first substrate surface of the substrate faces the conductive portion so that a portion of the beam pattern formed by the plurality of antenna elements extends in a direction that passes through the at least one opening;
• a first wireless communication circuit configured to transmit or receive a wireless signal in at least one first frequency band through the antenna module;
• and
• a second wireless communication circuit electrically connected to a feeding point of the conductive portion and configured to transmit or receive a wireless signal in at least one second frequency band through the conductive portion,
• wherein the substrate is tilted with respect to the conductive portion so that the first substrate surface of the substrate and an inner surface of the conductive portion are not parallel to each other.