Aperture-to-medium coupling loss

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In telecommunication, aperture-to-medium coupling loss is the difference between the theoretical antenna gain of a very large antenna, such as the antennas in beyond-the-horizon microwave links, and the gain that can be realized in practice.

Note 1: Aperture-to-medium coupling loss is related to the ratio of the scatter angle to the antenna beamwidth.

Note 2: The "very large antennas" are referred to in wavelengths; thus, this loss can apply to line-of-sight systems also.

See also[]

• Coupling loss

References[]

•  This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C". (in support of MIL-STD-188)