Equivalent isotropically radiated power

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Term equivalent isotropically radiated power
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Abbreviation

e.i.r.p.

Definition

The product of the power supplied to the antenna and the antenna gain in a given direction relative to an isotropic antenna (absolute or isotropic gain).

Definition Source

ICAO, Official definition, ANNEX 10/I Aeronautical Telecommunications — Radio Navigation Aids 1995, 5th ed., Chap. 3, p. 27

Note