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Synthesis of offset dual reflector antennas transforming a given feed illumination pattern into a specified aperture distributionThe problem of transforming a given primary feed pattern into a desired aperture field distribution through two reflections by an offset dual reflector system is investigated using the concepts of geometrical optics. A numerically rigorous solution for the reflector surfaces is developed which realizes an exact aperture phase distribution and an aperture amplitude distribution that is accurate to within an arbitrarily small numerical tolerance. However, this procedure does not always yield a smooth solution, i.e., the reflector surfaces thus realized may not be continuous or their slopes may vary too rapidly. In the event of nonexistence of a numerically rigorous smooth solution, an approximate solution that enforces the smoothness of the reflector surfaces can be obtained. In the approximate solution, only the requirement for the aperture amplitude distribution is relaxed, and the condition on the aperture phase distribution is continued to be satisfied exactly.
Document ID
19820041202
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mittra, R.
(Illinois, University Urbana, IL, United States)
Galindo-Israel, V.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Hyjazie, F.
(Illinois Univ. Urbana, IL, United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: IEEE Transactions on Antennas and Propagation
Volume: AP-30
Subject Category
Communications And Radar
Accession Number
82A24737
Funding Number(s)
CONTRACT_GRANT: NAS7-100
CONTRACT_GRANT: AF-AFOSR-80-0179
Distribution Limits
Public
Copyright
Other

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