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.
Famous quotes containing the words coupling and/or loss:
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The time of the coupling of man and woman
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—T.S. (Thomas Stearns)
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—Cathy Rindner Tempelsman (20th century)