RECEIVING ANTENNA OF SATELLITE COMMUNICATION SYSTEM Russian patent published in 1997 - IPC

FIELD: antenna engineering. SUBSTANCE: antenna system has spherical Luneberg lens 1 and set of feeds 2 placed in focal plane of spherical lens. Feeds 2 are, essentially, sections of round waveguides provided with two exciters 3 and 4 placed vertically and horizontally and spaced quarter-wave apart. Exciters are connected via switches 5 to input of first amplifiers 6 whose outputs are connected through coaxial cable 7 to inputs of matching transformer 8. Output of transformer 8 is connected to input of second low-noise amplifiers 9 whose output is connected to cavities 10. Frequency changers 11 are also connected to cavities 10. Frequency changers are connected through control unit 12 to receiver 13. Insulating plate 14 is placed at 45 deg to feeds in round waveguide of feed 2 to receive circular polarization waves with linear exciters. EFFECT: provision for switching channels from control station without mechanical readjustment of antenna. 4 cl, 1 dwg