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Near-field testing of the 30 GHz TRW proof-of-concept multibeam antennaNear-field testing was conducted on the 30 GHz TRW proof-of-concept (POC) Multibeam Antenna (MBA). The TRW POC MBA is a dual offset Cassegrain reflector system using a 2.7 m main reflector. This configuration was selected to assess the ability to create both multiple fixed and scanned spot beams. The POC configuration investigated frequency reuse via spatial separation of beams, polarization selectivity and time division multiple access scanning at 30 GHz. Measurements of directivity, sidelobe level, and pattern were made at NASA Lewis Research Center's Near-Field Antenna Test Facility. Presented in this paper are complete results of these measurements. Included is a detailed discussion of all testing procedures and parameters. Results of additional testing used to evaluate diffraction effects of the subreflector and distortions of the main reflector are also presented.
Document ID
19860018106
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kunath, R. R., Jr. (NASA Lewis Research Center Cleveland, OH, United States)
Zakrajsek, R. J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1986
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
NAS 1.15:87357
NASA-TM-87357
E-3115
Meeting Information
Meeting: Antenna Measurements Techniques Association 8th Annual Meeting and Symposium
Location: Ottawa, Ontario
Country: Canada
Start Date: September 23, 1986
End Date: September 25, 1986
Sponsors: National Research Council of Canada and the AMTA
Accession Number
86N27578
Funding Number(s)
PROJECT: RTOP 505-41-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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