Optimization of a parabolic reflector antenna parameters for Malaysia beam coverage

When covering Malaysia area by multi beams in satellite antenna, many feed horns are employed. In a previous designing, severe horn overlapping was shown. In this paper, overlapping problem of feed horn is analytically studied. The relation of feed horn size and feed position displacement is numerically clarified with parameter of the beam separation angle and F/D of a parabolic reflector. As a result, antenna structural parameters for escaping feed horn overlapping are clarified.