COLLECTIVE ANTENNA DEVICE

摘要

A collective antenna device comprises: a case (10) having a gradually rising part (11, 12) the space height of which continuously increases in the direction to a rear part of the case; a base plate (30) housed in the case and placed on the bottom thereof; a first antenna element (50, 150) housed in the case and used for a first frequency; and a second antenna element (80) used for a second frequency higher than the first frequency. The second antenna element is housed in the case such that the second antenna element is positioned under or behind the gradually rising part and also positioned behind the first antenna element. A feeding point (70) of the second antenna element is positioned above the base plate.