Loss or gain power ratio voltage ratio – Bird Technologies 21-83C-11-xx-T Series User Manual
Page 10
TX RX Systems Inc. Manual 7-9040-3 12/13/91 Page 6
Voltage
Ratio
Power
Ratio
dB
Voltage
Ratio
Power
Ratio
1
1
0
1
1
0.99
0.98
0.1
1.01
1.02
0.98
0.96
0.2
1.02
1.05
0.97
0.93
0.3
1.04
1.07
0.96
0.91
0.4
1.05
1.1
0.94
0.89
0.5
1.06
1.12
0.93
0.87
0.6
1.07
1.15
0.92
0.85
0.7
1.08
1.18
0.91
0.83
0.8
1.1
1.2
0.9
0.81
0.9
1.11
1.23
0.89
0.79
1
1.12
1.26
0.88
0.78
1.1
1.14
1.29
0.87
0.76
1.2
1.15
1.32
0.86
0.74
1.3
1.16
1.35
0.85
0.72
1.4
1.18
1.38
0.84
0.71
1.5
1.19
1.41
0.83
0.69
1.6
1.2
1.45
0.82
0.68
1.7
1.22
1.48
0.81
0.66
1.8
1.23
1.51
0.8
0.65
1.9
1.25
1.55
0.79
0.63
2
1.26
1.59
0.79
0.62
2.1
1.27
1.62
0.78
0.6
2.2
1.29
1.66
0.77
0.59
2.3
1.3
1.7
0.76
0.58
2.4
1.32
1.74
0.75
0.56
2.5
1.33
1.78
0.74
0.55
2.6
1.35
1.82
0.73
0.54
2.7
1.37
1.86
0.72
0.53
2.8
1.38
1.91
0.72
0.51
2.9
1.4
1.95
0.71
0.5
3
1.41
2
0.7
0.49
3.1
1.43
2.04
0.69
0.48
3.2
1.45
2.09
0.68
0.47
3.3
1.46
2.14
0.68
0.46
3.4
1.48
2.19
0.67
0.45
3.5
1.5
2.24
0.66
0.44
3.6
1.51
2.29
0.65
0.43
3.7
1.53
2.34
0.65
0.42
3.8
1.55
2.4
0.64
0.41
3.9
1.57
2.46
0.63
0.4
4
1.59
2.51
0.62
0.39
4.1
1.6
2.57
0.62
0.38
4.2
1.62
2.63
0.61
0.37
4.3
1.64
2.69
0.6
0.36
4.4
1.66
2.75
0.6
0.36
4.5
1.68
2.82
0.59
0.35
4.6
1.7
2.88
0.58
0.34
4.7
1.72
2.95
0.58
0.33
4.8
1.74
3.02
0.57
0.32
4.9
1.76
3.09
Voltage
Ratio
Power
Ratio
dB
Voltage
Ratio
Power
Ratio
0.56
0.32
5
1.78
3.16
0.56
0.31
5.1
1.8
3.24
0.55
0.3
5.2
1.82
3.31
0.54
0.3
5.3
1.84
3.39
0.54
0.29
5.4
1.86
3.47
0.53
0.28
5.5
1.88
3.55
0.53
0.28
5.6
1.91
3.63
0.52
0.27
5.7
1.93
3.72
0.51
0.26
5.8
1.95
3.8
0.51
0.26
5.9
1.97
3.89
0.5
0.25
6
2
3.98
0.5
0.25
6.1
2.02
4.07
0.49
0.24
6.2
2.04
4.17
0.48
0.23
6.3
2.07
4.27
0.48
0.23
6.4
2.09
4.37
0.47
0.22
6.5
2.11
4.47
0.47
0.22
6.6
2.14
4.57
0.46
0.21
6.7
2.16
4.68
0.46
0.21
6.8
2.19
4.79
0.45
0.2
6.9
2.21
4.9
0.45
0.2
7
2.24
5.01
0.44
0.2
7.1
2.27
5.13
0.44
0.19
7.2
2.29
5.25
0.43
0.19
7.3
2.32
5.37
0.43
0.18
7.4
2.34
5.5
0.42
0.18
7.5
2.37
5.62
0.42
0.17
7.6
2.4
5.75
0.41
0.17
7.7
2.43
5.89
0.41
0.17
7.8
2.46
6.03
0.4
0.16
7.9
2.48
6.17
0.4
0.16
8
2.51
6.31
0.39
0.16
8.1
2.54
6.46
0.39
0.15
8.2
2.57
6.61
0.39
0.15
8.3
2.6
6.76
0.38
0.15
8.4
2.63
6.92
0.38
0.14
8.5
2.66
7.08
0.37
0.14
8.6
2.69
7.24
0.37
0.14
8.7
2.72
7.41
0.36
0.13
8.8
2.75
7.59
0.36
0.13
8.9
2.79
7.76
0.36
0.13
9
2.82
7.94
0.35
0.12
9.1
2.85
8.13
0.35
0.12
9.2
2.88
8.32
0.34
0.12
9.3
2.92
8.51
0.34
0.12
9.4
2.95
8.71
0.34
0.11
9.5
2.99
8.91
0.33
0.11
9.6
3.02
9.12
0.33
0.11
9.7
3.06
9.33
0.32
0.11
9.8
3.09
9.55
0.32
0.1
9.9
3.13
9.77
Loss or
Gain
Power
Ratio
Voltage
Ratio
+9.1 dB
8.13
2.85
-9.1 dB
0.12
0.35
Power Ratio and Voltage Ratio to Decibel
Conversion Chart
Example-- Given a gain of +9.1 dB
or a loss of -9.1 dB
- dB +
- dB +