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Old April 15th 07, 12:54 AM posted to rec.radio.amateur.antenna
Walter Maxwell Walter Maxwell is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 233
Default Analyzing Stub Matching with Reflection Coefficients

On Sat, 14 Apr 2007 16:04:55 -0700, Roy Lewallen wrote:

Walt, before digging into your recent posting, I'd really like to get
one issue settled. I think it would be helpful in our discussion. The
issue is:

Can you find even one example of any transmission line problem which
cannot be solved, or a complete analysis done, without making the
assumption that waves reflect from a "virtual short" or "virtual open"?
That is, any example where such an assumption is necessary in order to
find the currents, voltages, and impedances, and the magnitude and phase
of forward and reverse voltage and current waves?

Roy Lewallen, W7EL


No Roy, of course not. I am not attempting to assert that reflection coefficients should be used in such an
analysis. I'm only asserting that it's another way of performing an analysis, one that I believe paints a more
visible picture of the how the pertinent waves behave in the circuit.

If I still haven't persuaded you that it's a viable way of analyzing the impedance matching function then I'll
back off and not pursue the issue any further.

Incidentally, you didn't answer my questions.

Walt