Patent ID: 7436362

Claim:
An antenna device comprising: a first antenna portion having: a first board having a first face and a second face opposite to the first face; a first antenna element mounted on the first face; and a first electronic circuit mounted on the second face; a second antenna portion having: a second board having a third face and a fourth face opposite to the third face; a second antenna element mounted on the third face; and a second electronic circuit mounted on the fourth face; a conductive base portion having a through hole; a first conductive wall provided on the base portion, defining a first shielding space in which the first electronic circuit is accommodated; and a second conductive wall provided on the base portion, defining a second shielding space in which the second electronic circuit is accommodated, wherein: the through hole of the base portion is arranged to provide a clearance for cables led out from the first board and the second board and inserted through the through hole; a part of the first conductive wall is monolithically formed with a part of the second conductive wall; and the through hole is located between the first shielding space and the second shielding space so that the first shielding space is surrounded by the first conductive wall and the through hole and the second shielding space is surrounded by the second conductive wall and the through hole.