> Several posts have referred to reflected power from a mismatched filter.
> People have reasoned, "If the output is 3 dB down, then the power has to
> go somewhere". But, it's also reasonable to consider that the source
> never generated the power at all because it didn't have enough voltage
> swing to work into a higher impedance, or enough current swing to work
> into a lower impedance, or the reactance caused phase differences between
> voltage and current.
That certainly makes sense.
The source does not have to "produce" the RF power when the load
isn't matched. The sources we use are energy converters that
convert a dc source to RF with a time-varying resistance.
It's easy to see the power just might never have been converted, or
converted directly into something like heat in the time-varying
resistance.
Sometimes the voltage skyrockets, sometimes the current does.
But they both don't need to increase at the same time and can be
in any phase relationship.
73, Tom W8JI
W8JI@contesting.com
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