Chap ter 5 - spec trum an a lyzer mea sure ments, In tro duc tion 5-1, Oc cupied band width 5-1 – Anritsu S331C User Manual
Page 64
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The following trace is an example of an antenna return loss trace.
Calculate the threshold value and compare the recorded Lowest Return Loss to the calcu-
lated threshold value.
Maximum Return Loss =
(
)
(
)
-
-
+
20
1
1
log VSWR
VSWR
NOTE: VSWR is the antenna manufacturer’s specified VSWR.
If the measured return loss is less than the calculated threshold value, the test fails and the
antenna must be replaced.
4-11/4-12
Chapter 4 Cable & Antenna Measurements
Figure 4-6.
Antenna Return Loss Trace
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