Total posts : 45366
“Power to the final RF stage” is what it says. Most people interpret this to mean “Power to the final RF amplifier stage”, but I am a holdout, since I believe the antenna is the final RF stage, thus I think 100mW to the antenna is the rule.
Nobody agrees with me.
But I will never change my mind.
You are right.
“Output power to the antenna would be easier to understand”.
Anyway, the RF final amplifier is inefficient and CANNOT produce more power than is applied to the input. In fact, it cannot pass 100% of the power.
Many circuits only pass 25% or some low factor, but there are high efficiency circuits, for example the AMT5000 from sstran.com which has a very high efficiency RF amplifier, somewhere near 90%.
