Walter Maxwell wrote:
Cecil, I know V2 is the re-reflected voltage, but what I'm trying to persuade
you is that they do NOT superpose to form the forward voltage--they superpose
only to form the standing wave. You've go to accept that the standing wave
voltage is NOT the forward voltage. If you can't come to realize this is the key
to the problem I'm going to have to give up.

I'm sorry, Walt,
Your belief that V2 is a reflected wave is the root of the misunderstanding.
V2 is a re-reflected wave and is therefore forward-traveling toward the load.
V2 is equal to the reflected wave voltage multiplied by the reflection
coefficient. V1 and V2 are traveling in the same direction, toward the load.

Incidentally, you say tau is 1+ rho as the transmission coefficient, which when
muliplied by input voltage yields forward voltage. I thought (1 - rho^2) is the
transmission coefficient. These two terms are not equal. Can you explain the
difference?

(1-rho^2) is the POWER transmission coefficient. For a single impedance
discontinuity situation, 1+rho is the VOLTAGE transmission coefficient.
From the IEEE Dictionary: "transmission coefficient, ... Note 2, An interface
is a special case of a network where the reference planes associated with
the incident and transmitted waves become coincident; in this case the
voltage transmission coefficient is equal to one plus the voltage
reflection coefficient."
--
73, Cecil http://www.qsl.net/w5dxp



-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----