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What is the difference between Directivity and Antenna Gain?
Is it possible to have an antenna with high Antenna Gain but low Directivity?
Yes, it is possible. Antenna Gain is a measure of how well the antenna converts input power into radio waves in a particular direction. It is possible to have an antenna that has high Antenna Gain in a particular direction but low Directivity because the energy may not be well focused in that direction.