Patent ID: 7358905

Claim:
An antenna device comprising: a base case including a radio module, a movable case including a plurality of antennas, and a three-dimensional joint attached to said base case and said movable case, wherein a plurality of cables are attached to said plurality of antennas and said radio terminal, and are bundled to pass through a through hole in said three-dimensional joint, and wherein said radio module selects one or more of said plurality of antennas in order to maintain good communication conditions wherein, the three-dimensional joint comprises: a pivot portion projecting from said movable case, a spherical portion provided on an end of said pivot portion, and a sphere receiving portion provided in said base case, to which said spherical portion fits so as to rotate freely, wherein said through hole penetrates through said pivot portion and said spherical portion to open an inside of said movable case to an inside of the base case.