Abstract:For a mechanical antenna system with a perfect parabolic reflector surface of diameter D the antenna gain is proportional to (D/X,)', where X, denotes the received carrier wavelength. However, for a practical system a n increase in D/X, is also associated with a decrease in antenna efficiency due to the imperfect reflector surface. Since the antenna efficiency is a very sensitive function of the RMS surface deviation or effectively of D/X,, the loss in efficiency can more than offset the increase in directivit… Show more
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