Wide angle multibeams

Wide angle multibeams

A method and system are disclosed for wide angle multibeam antennas. The method and system involve a multibeam antenna system for generating high performance multiple spot beams. In one or more embodiments, the multibeam antenna system includes an oversized antenna reflector and a plurality of anten...

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Hauptverfasser: DANIEL F MATHEWS, THOMAS M HIKIDO, PARTHASARATHY RAMANUJAM, ROBERT B MATHEWS
Format: Patent
Sprache:eng
Schlagworte:
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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creator DANIEL F MATHEWS
THOMAS M HIKIDO
PARTHASARATHY RAMANUJAM
ROBERT B MATHEWS
description A method and system are disclosed for wide angle multibeam antennas. The method and system involve a multibeam antenna system for generating high performance multiple spot beams. In one or more embodiments, the multibeam antenna system includes an oversized antenna reflector and a plurality of antenna feeds. The oversized antenna reflector has its surface shape optimized from a normal parabolic shape in order to broaden and shape the reflected spot beams to improve antenna performance. In addition, the diameter of the oversized antenna reflector is greater than ((100*lambda)/delta), where lambda is the wavelength in inches and delta is the beam to beam spacing in degrees. In some embodiments, the ratio of the focal length of the oversized antenna reflector to the diameter of the oversized antenna reflector (F/D) is greater than 0.7. In at least one embodiment, the system further includes an antenna sub-reflector.
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subjects ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
title Wide angle multibeams
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