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Realizable feed-element patterns for multibeam reflector antenna analysis

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4 Author(s)
Rahmat-Samii, Y. ; California Institute of Technology, Pasadena, CA, USA ; Cramer, P., Jr. ; Woo, K. ; Lee, S.W.

The radiation pattern of a feed element is approximately described by a simple function (\cos \theta)^{q} . For a given element spacing of the feed array, we give simple formulas for estimating the practical value of q when the element is an open-ended rectangular waveguide, an open-ended circular waveguide, a pyramidal horn, or a cigar antenna.

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Antennas and Propagation, IEEE Transactions on  (Volume:29 ,  Issue: 6 )