The decibel watt (dBW or dBW) is a unit for the measurement of the strength of a signal expressed in decibels relative to one watt. It is used because of its capability to express both very large and very small values of power in a short range of number; e.g., 1 milliwatt = −30 dBW, 1 watt = 0 dBW, 10 watts = 10 dBW, 100 watts = 20 dBW, and 1,000,000 W = 60 dBW.
Power in dBW
=
10
log
10
Power
1
W
{\displaystyle {\mbox{Power in dBW}}=10\log _{10}{\frac {\mbox{Power}}{1\mathrm {W} }}}
and also
Power in W
=
10
Power in dBW
10
{\displaystyle {\mbox{Power in W}}=10^{\frac {\mbox{Power in dBW}}{10}}}
Compare dBW to dBm, which is referenced to one milliwatt (0.001 W).
The decibel watt (dBW or dBW) is a unit for the measurement of the strength of a signal expressed in decibels relative to one watt. It is used because of its capability to express both very large and very small values of power in a short range of number; e.g., 1 milliwatt = −30 dBW, 1 watt = 0 dBW, 10 watts = 10 dBW, 100 watts = 20 dBW, and 1,000,000 W = 60 dBW.
Power in dBW
=
10
log
10
Power
1
W
{\displaystyle {\mbox{Power in dBW}}=10\log _{10}{\frac {\mbox{Power}}{1\mathrm {W} }}}
and also
Power in W
=
10
Power in dBW
10
{\displaystyle {\mbox{Power in W}}=10^{\frac {\mbox{Power in dBW}}{10}}}
Compare dBW to dBm, which is referenced to one milliwatt (0.001 W).