Influences of the Reflector Subtended Angle on the Performance of Parabolic Antennas with Feed Displacement

In this work, the comprehensive influence of different reflector subtended angle values and displacement feed on a parabolic antenna was studied. There are two main reasons for research; one is that actual performance antennas worse than indicated in theoretical analysis, other deep or derived impacts some deviations cannot be taken into sufficient account design. Differing from ideal analysis calculation, with pyramidal horn designed to make design more suitable project. The under angles then given. This research has higher practical guiding significance terms margin consideration engineering.