Patent ID: 6486845
Filing Date: 2002-11-26
Classification: H01Q

Abstract:
An antenna apparatus comprising:a fixed base having a datum plane and fixed in an installation place; a rotating base placed on the fixed base and adapted to be rotatable about a Z axis perpendicular to the datum plane; a support rail in the shape of substantially a semicircular arc, the rail being placed over the rotating base and adapted to be rotatable about a Y axis perpendicular to the Z axis with its central point on the Z axis and the Y axis passing through the central point of the support rail; first and second rotating shafts provided between an end of the support rail and the central point and between the other end of the support rail and the central point, respectively, to form an X axis perpendicular to the Y axis and adapted to be rotatable about the X axis independently of each other; first and second antennas fixed to the first and second rotating shafts, respectively; a Z-axis rotating mechanism for allowing the fixed base to rotate about the Z axis; a Y-axis rotating mechanism for allowing the support rail to rotate about the Y axis; and first and second X-axis driving mechanisms for rotating the first and second rotating shafts about the X axis independently of each other.