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Aperture efficiency and line feed phase center of parabolic cylindrical reflector antenna

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1 Author(s)
Kildal, P. ; Norwegian Institute of Technology, Trondheim, Norway

Formulas for calculation of the aperture efficiency of a parabolic cylindrical reflector antenna fed by a line feed along the focal line are presented. The efficiency is factorized into a number of subefficiencies which include contributions from line feed end diffraction, and from blockage and reflections from line feed supports and from diffraction by gaps in the reflector surface. One of the subefficiencies is used to define a phase center for the line feed as well as to obtain a formula for calculating it.

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Antennas and Propagation, IEEE Transactions on  (Volume:32 ,  Issue: 6 )