On Mon, 07 Jun 2004 16:52:15 -0500, Cecil Moore wrote:

Walter Maxwell wrote:
What Johnson and I are trying to tell you is that the superposition of the
source voltage and the re-reflected voltages DO NOT establish the forward
voltage.

If Johnson really said that, he screwed up because he is in direct
contradiction to the S-parameter analysis described in Ramo, Whinnery,
and Van Duzer in _Fields_and_Waves_in_Communications_Electronics_, (c)
1965, page 603, Section 11.09 "Scattering and Transmission Coefficients".

No Cecil, Johnson didn't screw up. Incidentally, the equation in question is his
Eq. 4.23, derived on Pages 98 and 99, and displayed on Page 100. Steve screwed
up because, as I've been repeating, he misinterpreted the equation to determine
the forward wave instead of the standing wave.

From all of your statements so far, it appears you may have misunderstood what
the forward wave really is. Here's a clue. When a tuner is properly adjusted in
matching a 50-ohm line to a 150 + j0 resistance and the output voltage of the
source is 70.71 v. the forward voltage is 70.71 x 1.1547 = 81.65 v. Do you
recognize it or know where the 1.1547 came from ? Steve doesn't have a clue.

Walt