What does "beamwidth" refer to in antenna technology?

Beamwidth in antenna technology specifically refers to the angle at which an antenna can effectively radiate or receive signals. This measurement is crucial because it defines how focused the signal is in a particular direction. A narrower beamwidth indicates that the antenna is capable of directing its energy more precisely, which is important for applications that require high gain and long-distance communication.

Understanding beamwidth is essential for optimizing antenna placement and ensuring that the antenna can cover the desired area, whether it be for broadcasting or receiving signals. In contrast, the other options relate to physical characteristics or performance metrics not directly related to how signals are distributed or received. For example, the height of an antenna does not influence the angular propagation of the emitted signal, and the power capacity does not indicate the directional efficiency of the antenna.