Answer: Radiation intensity, or the antenna power pattern, in a given direction is defined as the power radiated from an antenna per unit solid angle. The radiation intensity is a far field parameter which can be obtained by simply multiplying the radiation power density by the square distance, i.e., (2.99)
Explanation:The radiation is emitted from a source and travels towards a destination. On this journey the radiation spreads out, so the further away a detector is from the source, the less energy is detected. This is shown in Fig. 12.1 The intensity of the radiation can be increased by moving closer to the source.
