Antenna control system

摘要

An antenna control system comprises means (63) driving motive means (64 to 66). Motive means (64 to 66) may be suitably geared electrical motors or the like. Motive means (64) adjusts a variable differential phase shifter (70) to vary the downtilt of the beam of the antenna. Motive means (65) adjusts phase shifters (80, 81 and 82) via linkages (69) to adjust the azimuth of the beam of the antenna. Motive means (66) adjusts power dividers (54 to 56) via linkages (68) to adjust beam width of the beam of the antenna.