An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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beam efficiency
  کار‌آیی ِ تابه  
kârâi-ye tâbé
Fr.: efficacité de lobe  

A parameter indicating the quality of an antenna as a direction measuring device. It is given by the ratio of the total
received power contained in the main beam of an antenna
to the total power (including the sidelobes); the same as main beam efficiency. See also → beamwidth.

See also: → beam; → efficiency.