Patent ID: 8060167
Filing Date: 2011-11-15
Classification: H01Q,H04M

Abstract:
1. A portable radio device comprising: a first casing; a second casing; at least two connection portions, each connection portion connecting the first casing to the second casing so as to freely rotate through a rotation shaft provided in each of the at least two connection portions; a first antenna element, provided in the first casing; a conductor element, provided in the second casing; and at least two feeding portions provided in the second casing, each feeding portion having one end electrically connected to the first antenna element through each of the at least two connection portions including the rotation shaft and the other end electrically connected to the conductor element, wherein the connection portion including the rotation shaft has electric conductivity to form a dipole antenna as a whole by the first antenna element, the connection portion and the conductor element, wherein the connection portion is arranged away from the conductor element at a distance, and wherein the feeding portions are separate from each other along the rotation shaft in a prescribed gap, wherein the electrical connection between the first antenna element and the conductor element is switchable among at least two routes, each route electrically connecting the first antenna element to the conductor element through each different one of the feeding ports and each different one of the connection portions, to change a directivity of the dipole antenna.