Abstract:

Because of their large size,large reflector antennas tend to be distorted under the influence of an external force,so calculation of the radiation pattern of the reflector antennas with distorted reflector surface is of importance.With distortion of the reflector surface,calculation of the radiation integral becomes complicated.This paper makes use of the surface projection Jacobian to deal with the radiation integral,thus simplifying its mathematic equation.Finally,a comparison of the computing result with the GRASP result is made,showing that the two results are identical.

Key words: reflector with distorted reflector surfaces;the calculation of the radiation pattern surface;projection Jacobian