The gain of an antenna is always greater than the directivity of the antenna.
A. true
B. false
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The gain of an antenna is always greater than the directivity of the antenna.
A. true
B. false
the gain of an antenna is not always greater than the directivity. Gain is determined by the product of directivity and radiation efficiency, and since efficiency is always less than or equal to one, the gain is always less than the directivity.
High-directivity antennas can send and receive signals over greater distances but must be aimed toward another antenna. Omni antennas typically have a gain of 2.1dB over an isotropic antenna. Gain has a direct correlation to both directivity and beamwidth; higher-gain antennas focus on a smaller area, while low-gain antennas spread the signal out to cover a larger area.