Abstract: Relating to an antenna device used in wireless unit for mobile communication or the like, it is an object to present an antenna device hardly causing uneven pitch or deformation of antenna elements, high in gain and reliability, excellent in productivity, and having two or more impedance characteristics, and a method of manufacturing the same.

Abstract: Preparations of piece parts used in coupling a joint and a feeding fixture together and the assembly work involved are made easy and a less expensive antenna can be realized. The antenna disclosed here includes a case of a wireless device, a holder mounted on the case, a first antenna element accommodated in the holder so as to be freely movable by sliding, a stopper coupled with one end of the first antenna element and connected electrically to the holder by sliding, a cylindrical column like joint formed of an insulating resin and fixed to the other end of the first antenna element, a tubular feeding fixture formed of a metal, electrically connected with the holder by sliding and put in place sheathing the joint, and a second antenna element electrically connected to one end of the feeding fixture.