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Cassegrain-Antenna Gain ImprovementModified antenna feed with dual-shaped subreflectors yields 10-to20-percent improvement in efficiency of existing large-aperture paraboloidal or Cassegrainian antennas. Such offset dual-shaped subreflector (DSS) feed brings gain of existing paraboloid or Cassegrain antennas up to that of reflector antennas of more recent design at cost considerably lower than for reshaping existing reflecting surfaces. Mathematical procedures developed for synthesizing nearly optimum shapes for DSS elements of new feeds.
Document ID
19850000433
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Galindo, V. (Caltech)
Cha, A. G. (Caltech)
Mittra, R. (University of Illinois)
Date Acquired
August 12, 2013
Publication Date
March 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 9
Issue: 4
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
NPO-15775
Accession Number
85B10433
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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