Far field patterns of circular paraboloidal reflectors

The resulting normalized aperture field distributions from the recorded primary radiation patterns of various feed horns are examined and simulated by equivalent mathematical functions such as and , where and are constants. Convenient methods are worked out for the computation of the different secondary far field radiation pattern parameters for circularly symmetric equiphase distributions in terms of or . Computed and experimental data for beamwidth, efficiency, first and second side lobes, and aperture blocking effects are plotted and compared as a function of p. The resulting secondary patterns due to aperture field distribution are computed and presented in graph form for comparison.