View source for Engineering:Aperture-to-medium coupling loss

In [[Engineering:Telecommunication|telecommunication]], '''aperture-to-medium [[Physics:Coupling loss|coupling loss]]''' is the difference between the theoretical [[Engineering:Antenna gain|antenna gain]] of a very large antenna, such as the antennas in beyond-the-horizon [[Physics:Microwave|microwave]] links, and the gain that can be realized in practice. 

''Note 1:''  [[Engineering:Aperture (antenna)|Aperture]]-to-medium [[Physics:Coupling loss|coupling loss]] is related to the ratio of the scatter angle to the antenna [[Engineering:Beamwidth|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 ==
* [[Physics:Coupling loss|Coupling loss]]

==References==

[[Category:Antennas]]

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