ELECTRONIC DEVICE COMPRISING ANTENNA

An electronic device according to various embodiments includes a mmWave antenna module including a plurality of first antenna elements disposed on a first surface that is oriented in a first direction, a first coupling unit that protrudes in a second direction from a second surface that is perpendicular to the first surface and is oriented in the second direction, and an RFIC disposed on a third surface oriented in a third direction opposite to the first direction. The electronic device also includes an antenna structure including a plurality of second antenna elements and a second coupling unit protruding from one surface of the antenna structure; a connection member electrically connected to at least one of the first coupling unit and the second coupling unit; a main PCB electrically connected to the mmWave antenna module; and a wireless communication circuit disposed on the main PCB. The antenna structure is electrically connected to the mmWave antenna module via the connection member, and the wireless communication circuit is configured to perform wireless communication by using at least one of the mmWave antenna module and the antenna structure.