Three Dimensional Radiation Pattern and Its Implications Towards Radio Telescope Antenna

The different lobes of a radiation pattern, considering both three dimensional and two dimensional views, are examined and plotted as a function of angle in one plane. It presents a three dimensional radiation pattern with its direction of maximum radiation aligned with the z-axis. A comparison between actual radiation pattern and the radiation pattern developed from the concept of beam solid angle is made. Implications of reciprocity theorem towards radio telescope are considered and an analysis of a half wave dipole antenna is made. The relationship between the brightness of the sky and the received power is analyzed, particularly during the use of a radio telescope antenna.