Offset parabolic antenna for receiving broadcast radio signals, has adjustable joint defining joint axis, which is parallel to light axis to align primary emitter element of paraboloid disk on polarization plane of wave of main satellite

摘要

The antenna has a paraboloid disk with a primary emitter element (3) and held by a retaining element that is attached to a coupling handle (7) by an adjustable joint (5) to fasten the antenna to a supporting mast. The adjustable joint defines a joint axis (9) for vertical adjustment, which is perpendicular to a plane defined by a light axis of the antenna and a longitudinal axis (11) of the mast. An adjustable joint (6) defines a joint axis (10), which is parallel to the light axis to align the primary emitter element on a polarization plane of a wave of a main satellite.