What he is analyzing is not directly applicable to an RF amplifier. He is
looking at the whole thing, power source and generator. An RF analogy would
be a poorly regulated DC supply that is feeding an RF amplifier. Reduce the
load, and the DC voltage goes up. This changes the RF output.

RF amps are not power limited, up to the point where the transistor melts.
They are voltage limited; you can not get a peak RF drain voltage (inside
the die) greater than the DC supply voltage. A secondary effect of a load
change is caused by the gain of the transistor being current and voltage
dependent.

Tam/WB2TT
"Dave" wrote in message
...
have you guys read this one yet?

www.qsl.net/w9dmk/MPTT.pdf