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What is antenna gain?

April 26, 2017antenna gain

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What is antenna gain?

2 Answers

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A common misconception is that antennas actually amplify the signal and that is what is meant by ‘gain’.

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The relative increase in radiation at the maximum point expressed as a value in dB above a standard “reference” antenna, usually a 1/4 wave monopole (2.15dBi) or a 1/2 wave dipole (5.0dBi). This reference is a calibration to 0dBi for an “isotropic” radiator.