ABSTRACT
The far field radiation pattern from a parabolic reflector depends on the primary radiation pattern which is the
radiation pattern of the feed element placed and also on the type and dimensions of reflector used. Therefore in this
paper first analysis of the primary patterns of different elements like dipole, horn is done by considering different
dimensions. In addition the beam efficiency and the dipole multiplication patterns for different lengths were also
calculated. . A parabolic reflector has been selected as the reflector because it produces high gain pencil beam with
low side lobes. Using general and aperture approximation methods the radiation patterns have been plotted in both
the azimuth and elevation planes. The comparison of dipole, square corner and horn feeds based on the
characteristics like intensity, directivity has also been done and the resultant patterns were obtained.
Keywords: - Antenna, beam width, gain, power radiated, beam width, directivity, 2D E-Plane pattern and 3D
Radiation intensity pattern.