Agilent Technologies ESA-E Series User Manual page 33

Converting Return Loss to VSWR
Return loss can be expressed as a voltage standing wave ratio (VSWR) value using
the following table or formula:
Table 3-3 Power to VSWR Conversion
Return VSWR Return
Loss Loss
(dB) (dB)
4.0 4.42 14.0
6.0 3.01 14.2
8.0 2.32 14.4
10.0 1.92 14.6
10.5 1.85 14.8
11.0 1.78 15.0
11.2 1.76 15.2
11.4 1.74 15.4
11.6 1.71 15.6
11.8 1.69 15.8
12.0 1.67 16.0
12.2 1.65 16.2
12.4 1.63 16.4
12.6 1.61 16.6
12.8 1.59 16.8
13.0 1.58 17.0
13.2 1.56 17.2
13.4 1.54 17.4
13.6 1.53 17.6
13.8 1.51 17.8
Chapter 3
VSWR Return VSWR
Loss
(dB)
1.50 18.0 1.29
1.48 18.5 1.27
1.47 19.0 1.25
1.46 19.5 1.24
1.44 20.0 1.22
1.43 20.5 1.21
1.42 21.0 1.20
1.41 21.5 1.18
1.40 22.0 1.17
1.39 22.5 1.16
1.38 23.0 1.15
1.37 23.5 1.14
1.36 24.0 1.13
1.35 24.5 1.13
1.34 25.0 1.12
1.33 25.5 1.11
1.32 26.0 1.11
1.31 26.5 1.10
1.30 27.0 1.09
1.30 27.5 1.09
Making Measurements
Making Return Loss Measurements
Return VSWR Return
Loss Loss
(dB) (dB)
28.0 1.08 38.0
28.5 1.08 38.5
29.0 1.07 39.0
29.5 1.07 39.5
30.0 1.07 40.0
30.5 1.06 40.5
31.0 1.06 41.0
31.5 1.05 41.5
32.0 1.05 42.0
32.5 1.05 42.5
33.0 1.05 43.0
33.5 1.04 43.5
34.0 1.04 44.0
34.5 1.04 44.5
35.0 1.04 45.0
35.5 1.03 45.5
36.0 1.03 46.0
36.5 1.03 46.5
37.0 1.03 47.0
37.5 1.03 47.5
VSWR
1.03
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
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