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Reflector antennas with low sidelobes, low cross polarization, and high aperture efficiencyTechniques are presented for computing the horn near field patterns on the subreflectors and for correcting the phase center errors of the horn pattern by shaping the subreflector surface. The diffraction pattern computations for scanned beams are described. The effects of dish aperture diffraction on pattern bandwidth are investigated. A model antenna consisting of a reflector, shaped subreflector, and corrugated feed horn is described.
Document ID
19840023394
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Faigen, I. M. (Chu Associates, Inc. Littleton, MA, United States)
Reichert, C. F. (Chu Associates, Inc. Littleton, MA, United States)
Sletten, C. J. (Chu Associates, Inc. Littleton, MA, United States)
Shore, R. A. (Chu Associates, Inc. Littleton, MA, United States)
Date Acquired
September 4, 2013
Publication Date
March 1, 1984
Subject Category
Communications And Radar
Report/Patent Number
NASA-CR-174670
NAS 1.26:174670
Accession Number
84N31464
Funding Number(s)
CONTRACT_GRANT: NAS3-22343
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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