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Efficiency measurement techniques for calibration of a prototype 34-meter-diameter beam-waveguide antenna at 8.45 and 32 GHzEfficiency measurements at 8.45 and 32 GHz (X and Ka bands, respectively) were carried out on the new 34 m diameter beam waveguide antenna now in use at the NASA Goldstone Deep Space Communications Complex. The use of portable test packages enabled measurements at both the Cassegrain and beam waveguide focal points. Radio sources (quasars and Venus) were used as calibrators, and updated determinations of flux and source size correction were made during the period of the measurements. Gain and efficiency determinations as a function of elevation angle are presented, and the effects of the beam waveguide system and antenna structure are clearly seen. At the beam waveguide focus, an 8.45 GHz peak efficiency of 72.38 pct was measured; at 32 GHz, 44.89 pct was measured.
Document ID
19920063439
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Slobin, Stephen D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Otoshi, Tom Y.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Britcliffe, Michael J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Alvarez, Leon S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Stewart, Scott R.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Franco, Manuel M.
(JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1992
Publication Information
Publication: IEEE Transactions on Microwave Theory and Techniques
Volume: 40
Issue: 6 Ju
ISSN: 0018-9480
Subject Category
Astronomy
Accession Number
92A46063
Funding Number(s)
PROJECT: RTOP 310-30-69-88-04
Distribution Limits
Public
Copyright
Other

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