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    A new antenna concept for satellite communications (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A novel antenna configuration of two reflecting surfaces and a phased array is examined for application to satellite communications and shown to be superior in every respect to earlier designs for service to the continental United States from synchronous orbit. The vignetting that afflicts other two reflector optical systems is eliminated by use of a reflecting field element. The remaining aberrations, predominantly coma, are isolated in the time delay distribution at the surface of the array and can be compensated by ordinary array techniques. The optics exhibits infinite bandwidth and the frequency range is limited only by the design of the array.
    Keywords: COMMUNICATIONS AND RADAR
    Type: NASA-CR-167924 , NAS 1.26:167924
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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