Gain (antenna)

Antenna gain measures how effectively an antenna directs radio energy in a specific direction compared to a standard reference, usually an isotropic source (which radiates equally in all directions). Higher gain means the antenna concentrates the signal more tightly, boosting the strength and clarity of communication in that targeted area, while reducing signals in other directions. This focused energy improves reception and transmission, making the antenna more efficient for specific applications like satellite communications or point-to-point links. Essentially, gain reflects how well an antenna can focus its signal to achieve better performance and longer range in preferred directions.