Antenna device

An antenna device comprising:

• a metal housing in which at least one surface thereof is open;
• a display circuit provided inside the metal housing and configured to perform a display from the one surface of the metal housing toward outside;
• a first transparent conductor plate present in the display circuit;
• a second transparent conductor plate provided to be spaced apart from the first transparent conductor plate in an outside or inside direction, the second transparent conductor plate to define a gap between the second transparent conductor plate and the metal housing;
• and
• a feeder provided between the metal housing and the second transparent conductor plate,
• wherein a ratio of an area of the second transparent conductor plate with respect to an area of the first transparent conductor plate is within a range of 0.6 or more to 1.1 or less.