Walter Maxwell wrote:
Cecil, I'll give you an example below, taken from your own 1/4 wl transformer
analysis, that proves a virtual reflection coefficient can equal 1.0.

Save your energy, Walt. An S-parameter analysis does NOT allow for virtual
reflection coefficients. Virtual reflection coefficients DO NOT EXIST and
CANNOT EXIST in an S-parameter analysis. I don't know how to convey that
fact to you any stronger than I already have. Virtual reflection coefficients
are completely irrelevant to an S-parameter analysis. Virtual reflection
coefficients simply do NOT exist within the S-parameter math model.

Consequently, in the steady state the input of the 1/4 wl transformer presents a
reflection coefficient of 1.0 to the integrated sum of individual reflected
waves.

Walt, virtual reflection coefficients simply don't exist in an S-parameter
analysis. Therefore, in all the examples discussed, reflection coefficients
of 1.0 are COMPLETELY IRRELEVANT to any discussion involving S-parameters.
Reflection coefficients of 1.0 DO NOT EXIST in an S-parameter analysis of a
matched system involving 50 ohms and 150 ohms. s11 is the reflection coefficient
looking into port 1. It is fixed constant at 0.5 and doesn't chance no matter
what the conditions. Your assertions are simply irrelevant to an S-parameter
analysis.
--
73, Cecil http://www.qsl.net/w5dxp



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