10 Log
10
(output power/input power)
Gain(dB)
Pout(dB)-Pin(dB)
Gain(dB)
Pout(dBm)-Pin(dBm)
Example:
Input power is 2dBm, system gain is 5dB
What's the output power? Ans: 7dBm
Gain
outpur Power > input Power
Attenuation
outpur Power < input Power
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gain.htm, Tue Jun 13 18:53:29 CST 2023