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Multiple-Beam Communications AntennaSystem has both fixed-spot and scanning coverage. Advanced offset-fed spacecraft antenna systems operating in 30/20 GHz frequency bands developed to provide multiple-radiating fixed-spot and regional-coverage scanning beams for use on communications satellites. Operating at higher frequencies, provides alternate frequency bands for expansion of existing satellite services and achieving frequency reuse capability for conservation of frequency spectrum. 20-GHz transmitting antenna is offset-fed, dual-reflector configuration. 30-GHz receiving antenna has orthogonal polarized feeds, hyperbolic reflectors, and two subreflectors.
Document ID
19890000050
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Myhre, R. W. (NASA Lewis Research Center, Cleveland, OH.)
Roberts, T. E. (Ford Aerospace and Communications Corp.)
Wong, W. C. (TRW, Inc.)
Date Acquired
August 13, 2013
Publication Date
February 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 2
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
LEW-14190
Accession Number
89B10050
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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