Patent ID: 7215291

Claim:
An antenna device comprising: an antenna main body disposed on one face side of a plate material having a mount hole provided therein; and a fixing member disposed on the other face side of the plate material, the fixing member fixing the antenna main body to the plate material, wherein the antenna main body comprises: an antenna element; a first connector electrically connected to the antenna element; a first screw section provided in a tightening direction in which an axial center line thereof passes through the mount hole; and an engagement section inserted into the mount hole from the one face side, thereby making engagement with the other face side, and the fixing member comprises: a feeder line provided to make connection with the antenna element; a second connector connected to the feeder line and provided to make mechanical engagement with, and electrical connection to, the first connector; and a second screw section helically fitted to the first screw section, thereby tightening the antenna main body, the fixing member, and the plate material with one another.