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Power Ratio Calculator
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given Po in W and Pi in mW Power Ratio Calculator, given Po in W and Pi in W
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Pr = 10 *Log 10(
Po in Watts /
Pi in milliWatts )
Power Ratio (Pr)=
in dB
Here mW ( milliWatts ) is converted to 0.001 W in the program. Hence no need to write 0.001 just enter 1 for 1 mW. But in manual computation use 1 mW = 0.001 W the reason is the Power ratio has no unit. Meaning the Watts unit in numerator must be divided by Watts unit in denominator in order to cancel out the unit. Pr, in dB, Given
= 10 *Log 10
(
Po/
Pi
in mW )
Power output, Mp =
in Watts
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