RigExpert AA-230 ZOOM
17.
Software manual
20/03/2019
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(Return Loss)
RL (Return Loss)
(
From Wikipedia, the free encyclopedia
)
return loss
returned/reflected by a discontinuity in a
discontinuity can be a mismatch with the terminating load or with a device
inserted in the line. It is usually expressed as a ratio in
Where
RL
(dB) is the return loss in dB,
P
i
is the incident power and
P
r
is the
reflected power.
Return loss is related to both
(SWR) and
(Γ). Increasing
return loss corresponds to lower SWR. Return loss is a measure of
how well devices or lines are matched. A match is good if the return loss is high. A
high return loss is desirable and results in a lower
Return loss is used in modern practice in preference to SWR because it has better
resolution for small values of reflected wave
Show return loss graph
