Gearbox for a base station antenna, antenna and base station

A gearbox for an antenna, particularly for a base station antenna, the antenna including at least two phase shifters, the gearbox comprising:

• at least two phase shift adjustment spindles that can be coupled to a respective phase shifter of the antenna and driven for electrically adjusting a radiation beam direction of the antenna;
• a rotary driving actuator;
• and
• a function selector actuator:
• wherein:
• the rotary driving actuator is adapted to rotate a coupling element of the gearbox;
• the function selector actuator includes a movable function selector element that is fixed to the coupling element and to a coupling mechanism of the gearbox, wherein the function selector element is movable from a first position to a second position thereby actuating the coupling element and the coupling mechanism;
• in the first position, the coupling element is coupled with a phase shift spindle selector gearing that translates the rotational movement of the rotary driving actuator into a linear movement of a phase shift spindle selector element in order to select a phase shift adjustment spindle to be driven, the phase shift spindle selector element supporting a phase shift adjustment spindle drive gear, that is adapted to drive the selected phase shift adjustment spindle;
• in the second position, the coupling element is coupled with a phase shift adjustment gearing that couples the rotary driving actuator with the phase shift adjustment spindle drive gear to drive the selected phase shift adjustment spindle;
• in the first position, the phase shift adjustment spindle drive gear is uncoupled from the selected phase shift adjustment spindle via the coupling mechanism;
• and
• in the second position, the phase shift adjustment spindle drive gear is coupled with the selected phase shift adjustment spindle via the coupling mechanism.