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Adaptive feed array compensation system for reflector antenna surface distortionThe feasibility of a closed loop adaptive feed array system for compensating reflector surface deformations has been investigated. The performance characteristics (gain, sidelobe level, pointing, etc.) of large communication antenna systems degrade as the reflector surface distorts mainly due to thermal effects from a varying solar flux. The compensating systems described in this report can be used to maintain the design performance characteristics independent of thermal effects on the reflector surface. The proposed compensating system employs the concept of conjugate field matching to adjust the feed array complex excitation coefficients.
Document ID
19890008385
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Acosta, Roberto J. (NASA Lewis Research Center Cleveland, OH, United States)
Zaman, A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1989
Subject Category
Communications And Radar
Report/Patent Number
NAS 1.15:101458
E-4568
NASA-TM-101458
Report Number: NAS 1.15:101458
Report Number: E-4568
Report Number: NASA-TM-101458
Meeting Information
Meeting: 1989 IEEE AP-S International Symposium and URSI Radio Science Meeting
Location: San Jose, CA
Country: United States
Start Date: June 26, 1989
End Date: June 30, 1989
Accession Number
89N17756
Funding Number(s)
PROJECT: RTOP 650-60-20
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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