Beamwidth refers to the angle at which a signal is transmitted or received by an antenna. It is typically measured in degrees and indicates how focused or spread out the signal is. A narrow beamwidth means the signal is concentrated in a specific direction, which can enhance communication range and clarity. Conversely, a wider beamwidth allows for a broader coverage area but may reduce signal strength. In radio and telecommunications, understanding beamwidth is crucial for optimizing performance. For example, satellite antennas often have narrow beamwidths to target specific areas, while Wi-Fi routers may use wider beamwidths to cover larger spaces.