dB i

dB i
   a unit measuring the gain of an antenna. The reference level is the strength of the signal that would be transmitted by an isotropic antenna: one radiating equally in all directions. For example, an antenna rated 20 dB i transmits a signal in the desired direction 102 = 100 times stronger than an isotropic antenna.

Dictionary of units of measurement. 2015.

Игры ⚽ Поможем сделать НИР

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