ANTENNA GAIN

Antennas Glossary

Antennas — Antenna Gain

Information on Antenna Gain

The antenna gain is normally defined as the increase in power radiated by an antenna in a particular direction compared to a reference dipole, or a reference isotropic radiator. Antenna gain is normally obtained by making an antenna directional by altering its radiation pattern so that most of the radiation is transmitted in a certain direction. The antenna gain plays an important part in the ultimate performance of a system and is closely associated with the transmitted power and the receiver sensitivity employed. The maximum power gain obtainable in practice is usually restricted by various factors such as antenna size, weight and the need for mobility.

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