Anritsu S113C User Manual
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.
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.
antenna must be replaced.
4-11/4-12
Chapter 4 Cable & Antenna Measurements
Figure 4-6.
Antenna Return Loss Trace