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Voltage Standing Wave Ratio (VSWR) Performance Test
VSWR (Voltage Standing Wave Ratio) is a measure of how efficiently RF power is
transmitted from an RF power source. In real systems, mismatched impedances
between the RF source and load can cause some of the power to be reflected
back towards the source and vary the VSWR.
Test equipment
– Network analyzer (E8361A/3B/4B)
– Keysight calibration kit (85054A/D or 85056A/D)
Test procedure
1 Turn on the network analyzer and allow it to warm up for approximately
2 Set the start frequency of the network analyzer to 50 MHz and the stop
3 Calibrate the network analyzer using the appropriate calibration kit (85054A/D
4 After calibration, connect the N1923/4A to the test port of the network
5 Compare the measured results to the specifications in
6 If the test fails, refer to
Keysight N1921A and N1922A Operating and Service Guide
an hour.
frequency to 18 GHz (for the N1921A) and 40 GHz (for the N1922A).
for the N1921A and 85056A/D for the N1922A). Perform calibration for the
open, short, and load circuits of the network analyzer.
analyzer. Turn on Correction on the network analyzer to perform the VSWR
measurement.
Performance Tests and Adjustments
"Adjustment"
on page 37.
Table
2-1.
2
25
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