Wireless communication device

A wireless communication device comprising:

• a reflecting plate that has a reflecting surface that reflects electromagnetic waves;
• a radome that covers the reflecting plate so as to form an airflow path between the radome and the reflecting surface, and includes an air inlet and an air outlet that communicate with the airflow path by having holes in the top and bottom of the radome;
• an array antenna provided on the reflecting surface and inside the airflow path, and that includes a plurality of antenna elements aligned on the reflecting surface with an interval from each other;
• and
• a communication circuit that transmits and receives a wireless signal by exciting the array antenna,
• wherein the plurality of antenna elements each include an antenna pattern formed on a plate-shaped dielectric substrate extending from the reflecting surface in a direction orthogonal thereto,
• wherein a direction of thickness of the plurality of antenna elements is perpendicular to the direction of the airflow path and the direction in which the dielectric substrate extends.