dBW and dBm
When using the 1 watt form don't use the symbol dB, but rather
dBW
.
P
in dBW's
= 10 x LOG(P
in watts
)
The values below should look familiar, except that the correspondence is to a power in watts rather than a multiplying factor.
:
dBW
Absolute Power
0
1 watt
10
10 watts
20
100 watts
30
1000 watts
and of course
:
3 dBW <--->
2 watts
All are familiar --
all as before
-- except dBW which represents so-many watts, not just a ratio.
