1. JP2020114035 - ON-VEHICLE ANTENNA DEVICE

PROBLEM TO BE SOLVED: To provide a novel and compact on-vehicle antenna device which is small in height and replaces a monopole antenna.

SOLUTION: An antenna device 1 to be attached to a vehicle roof or the like includes a housing 10 having multiple metal surfaces which are formed at mutually different angles on a surface to be nearly orthogonally crossed with an attachment surface. A top surface of the housing 10 opposing to the attachment surface is opened in a nearly cross shape and a planar antenna 30 is arranged at an opened part. Vertical polarization slots 111, 114 and slits 112, 113 are formed on the respective metal surfaces of the housing 10.

SELECTED DRAWING: Figure 1

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