the different of coeffcient.
时间：04-10
整理：3721RD
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Hi
It is because return is defined as the reflected over the incident voltage.
Power is the squared of the voltages and since
Return loss = 20*log(Vr/Vi)
Power = 10*log(V
Math rule: 10*log(X)
Hope it helps
Regards
Return loss is voltage ratio, not a power ratio. His is why coefficient of 20 used.
Best regards