"Ken Smith" wrote in message
...
In article , gwhite
wrote:
Ken Smith wrote:


RF transmitter power amps are certainly "impedance matched" to the
intended load.

I'm sorry, but they are not. Nor are any power amps that I know of.
Efficiency
(and thus necessarily output swing) is what matters for power amps. To
maximize
swing requires load line matching, not impedance matching.

I still say they are. Motorola AN-721 takes on the theory. AN-758 does a
practical example matching 12.5 Ohms into 50 Ohms


Ken,
Motorola 721 specifically says the device IS NOT MATCHED.

Tam

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