Effect of VSWR on Transmitted Power

The VSWR is a measure, of the amount of mismatch between the load (Antenna) and the transmission lines impedance. A VSWR of 1 is a perfect match which occurs on a transmission line where there are no reflections. A VSWR less than 1.5:1 is considered good and a VSWR greater than 2:1 is usually unacceptable.
VSWR
Return Loss dB
Power Transmitted %
Reflected Power %
1.00
100.0
0.0
1.01
46.1
100.0
0.0
1.02
40.1
100.0
0.0
1.03
36.6
100.0
0.0
1.04
34.2
100.0
0.0
1.05
32.3
99.9
0.1
1.06
30.7
99.9
0.1
1.07
29.4
99.9
0.1
1.08
28.3
99.9
0.1
1.09
27.3
99.8
0.2
1.10
26.4
99.8
0.2
1.11
25.7
99.7
0.3
1.12
24.9
99.7
0.3
1.13
24.3
99.6
0.4
1.14
23.7
99.6
0.4
1.15
23.1
995
0.5
1.16
22.6
99.5
0.5
1.17
22.1
99.4
0.6
1.18
21.7
99.3
0.7
1.19
21.2
99.2
0.8
1.20
20.8
99.2
0.8
1.21
20.4
99.1
0.9
1.22
20.1
99.0
1.0
1.23
19.7
98.9
1.1
1.24
19.4
98.9
1.1
1.25
19.1
98.8
1.2
1.26
18.8
98.7
1.3
1.27
18.5
98.6
1.4
1.28
18.2
98.5
1.5
1.29
17.9
98.4
1.6
1.30
17.7
98.3
1.7
1.32
17.2
98.1
1.9
1.34
16.8
97.9
2.1
1.36
16.3
97.7
2.3
1.38
15.9
97.5
2.5
1.40
15.6
97.2
2.8
VSWR
Return Loss dB
Power Transmitted %
Reflected Power %
1.42
15.2
97.0
3.0
1.44
14.9
96.7
3.3
1.46
14.6
96.5
3.5
1.48
14.3
96.3
3.7
1.50
14.0
96.0
4.0
1.52
13.7
95.7
4.3
1.54
13.4
95.5
4.5
1.56
13.2
95.2
4.8
1.58
13.0
94.9
5.1
1.60
12.7
94.7
5.3
1.62
12.5
94.4
5.6
1.64
12.3
94.1
5.9
1.66
12.1
93.8
6.2
1.68
11.9
93.6
6.4
1.70
11.7
93.3
6.7
1.72
11.5
93.0
7.0
1.74
11.4
92.7
7.3
1.76
11.2
92.4
7.6
1.78
11.0
92.1
7.9
1.80
10.9
91.8
8.2
1.82
10.7
91.5
8.5
1.84
10.6
91.3
8.7
1.86
10.4
91.0
9.0
1.88
10.3
90.7
9.3
1.90
10.3
90.4
9.6
1.92
10.0
90.1
9.9
1.94
9.9
89.8
10.2
1.96
9.8
89.5
10.5
1.98
9.7
89.2
10.8
2.00
9.5
88.9
11.1
2.50
7.4
81.6
18.4
3.00
6.0
75.0
25.0
4.00
4.4
64.0
36.0
5.00
3.5
55.6
44.4
10
1.7
33.1
66.9
20
0.9
18.9
81.9
Elsema’s 2020/21 Gate and Door Controls
Elsema’s 2016/17 Wireless Communication

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Elsema’s Gate and Door Controls: Includes Automatic sliding gate motor kits, Automatic swing gate motor kits, Solar gate kits, Control cards, Door controls, Keyring Remotes, Receivers, IP66 rated Cases, Solar Panels, Backup Batteries and many more.

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Elsema’s 2017/18 Gate and Door Controls: Includes Automatic sliding gate motor kits, Automatic swing gate motor kits, Solar gate kits, Control cards, Door controls, Keyring Remotes, Receivers, IP66 rated Cases, Solar Panels, Backup Batteries and many more.

Elsema’s 2016/17 Wireless Communication: Includes Transmitters, Receivers, Antennas, IP66 rated Cases, Backup Batteries, and many more.

Elsema’s 2017/18 Gate and Door Controls
Elsema’s 2016/17 Wireless Communication