SATELLITE COMMUNICATION ANTENNA SYSTEM Russian patent published in 1997 - IPC

FIELD: reception of signals of communication satellites; may be used as individual for reception of satellite television. SUBSTANCE: switching-over of channels does not require mechanical re-tuning of antenna and is conducted from control desk. Antenna system has spherical lens, row of radiators positioned in focal surface of spherical lens. Radiators are made in the form of matching element and exciters mounted in sequence. Exciters are connected to commutator through switches. Commutator is linked through coaxial cable to input of resonance chamber coupled to frequency converter across which output filter with low-noise amplifier is placed. Radiator is fitted with matching element in the form of section of round waveguide with bushing of conductive material to receive waves with circular polarization. EFFECT: increased operational efficiency. 3 cl, 1 dwg