The wikipedia definition of "return loss" is rather absurd. If you have a *perfect* match and *no* power is reflected, the "return loss" is infinite. Of course it *is* wikipedia.
I'm not about to try to change the EE community lexicon, but it seems to me reflected/incident makes a great deal more sense numerically. It also leads to what I'd expect. "Loss" as a negative quantity when expressed in dB.
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Reg
