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A receiver requires 10nW as input power if all the system losses add up to 50dB then how much power is required from the source?
Wiki User
∙ 14y ago
here, the power required by the receiver is the output power and that required from the source is input power.
Gain in dB=10 log(output power/input power)
we have, loss in dB = -gain in dB = 10 log(input power/output power)
or, 50 = 10 log(input power/10nW)
or, anti-log(5) = input power/10 nW
so the power required from the source is antilog(5)*10nW = 1 mW
Wiki User
∙ 14y ago
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