[SI-LIST] Re: Serdes RX: Power based or voltage based?

  • From: "Beal, Weston" <Weston_Beal@xxxxxxxxxx>
  • To: "farhilltramper@xxxxxxxxx" <farhilltramper@xxxxxxxxx>
  • Date: Mon, 9 Dec 2019 02:26:22 +0000

Tramp,
Why do you say that we all know that S parameters are power based? The 
definition of S parameters is entirely in terms of voltage. I suppose that if 
you consider the voltages in S parameters you can answer your own question.
Regards,
Weston


On Dec 8, 2019 3:38 AM, Tramp <farhilltramper@xxxxxxxxx> wrote:
Hi experts,
We all know sparam is power based. But when it comes to the RX sampler, it
seems to be voltage based to me. This is bcs that the slicer doesnt care if
the voltage it is sampling is inphase w/ time, or out of phase since it can
shift its time base to locate the peaks of incoming voltage. In other
words, what is cared for is the apparent power rather than the effective
power.
is my understanding correct?

Best Regards,

Tramp


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