Patent ID: 8170635

Claim:
A radio apparatus comprising: a first housing section; a second housing section rotatably connected to the first housing section, the second housing section including an antenna feed circuit and a ground circuit; and a hinge section comprising an axis member fixed to the second housing section and a bearing member fixed to the first housing section, the axis member being provided through the bearing member so as to form an axis of rotation of the second housing section with respect to the first housing section, the axis member having a conductive portion connected to the antenna feed circuit at a feed point; wherein the axis member is arranged such that the conductive portion of the axis member is at least partially exposed to outside of the bearing member; wherein a nonconductive surrounding member is arranged around the conductive portion of the axis member exposed to the outside of the bearing member; and wherein a conductive pattern is provided on the nonconductive surrounding member; wherein: a first antenna element including the axis member, and second and third antenna elements on a side of the second housing section of the hinge section are provided, the first antenna element and the second antenna element have inverted-L shapes directed in directions opposite to each other, and tips of the first antenna element and the second antenna element are arranged substantially perpendicular to the third antenna element.