How to calculate quickly gains and losses (PART 2)
What happen when we work with attenuation or smaller signal output in a network. How calculate that power output?
We know that:
0dB implies that dosn't exist gain or attenuation or loss
-10 dB implies that the output is 10 smaller than the input
-20 dB implies that the output is 100 smaller than the input
-30 dB implies that the output is 1000 smaller than the input
and so on
And for
-3 dB implies that the output is the half of the input (a two-times divider)
-6 dB implies that the output is four times smaller than the input (a four-times divider)
-9 dB implies that the output is eight times smaller than the input (a eight-times divider)
-12 dB implies that the output is sixteen times smaller than the input (a sixteen-times divider)
and so on
For example: if we want to calculate the output of the following network
[input] 2 mW ---> [ - 14 dB (loss or attenuation)] ---> ? [ output]
We divide the input by 100 and multiply by 4, getting 0.02 mW * 4 = 0.08 mW
