Directional gain is a measure of how well an antenna focuses energy in a specific direction, enhancing signal strength and reception in that direction while reducing interference from others. It is a critical parameter in designing communication systems where targeted signal transmission and reception are required for efficiency and effectiveness.
An antenna pattern, also known as a radiation pattern, is a graphical representation of the distribution of radiation emitted by an antenna as a function of direction in space. It is crucial for understanding how an antenna transmits and receives signals, affecting its performance and coverage area.