Path Loss
Path loss
: In a communication
system
, the
attenuation
undergone by an
electromagnetic wave
in transit between a transmitter and a receiver.
Note 1:
Path
loss
may be due to many effects such as
free-space loss
,
refraction
,
reflection
,
aperture
-
medium
coupling loss
, and
absorption
.
Note 2:
Path loss is usually expressed in
dB
.
Synonym
path attenuation.
Source: from
Federal Standard 1037C
and from
MIL-STD-188
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