SATELLITE COMMUNICATIONS ANTENNA ASSEMBLY Russian patent published in 1998 - IPC

FIELD: receiving signals from communication satellites; individual receiving antennas for satellite television. SUBSTANCE: antenna assembly has spherical lens and set of feeds arranged in focal surface of spherical lens. Feeds are built up of matching member and exciters mounted in tandem. Newly introduced in antenna assembly are mixer and local oscillator which makes it possible to use one resonance box and one frequency changer for all ranges. Exciters are connected through switch, mixer, resonance box, and frequency changer to filter and low-noise amplifier. Feed is provided with matching device in the form of section of circular waveguide with conducting-material bush. EFFECT: provision for changing over channels from control console dispensing with mechanical readjustment of antenna. 3 cl, 1 dwg