Thread: Superposition
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Old November 23rd 07, 02:17 AM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
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First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Superposition

Gene Fuller wrote:

I'm going to ignore your hodge-podge of obfuscations and
concentrate on only one point.

The ONLY thing under discussion here is our disagreement about the
canceling waves heading back toward the source from the match point. You
claim those waves must exist and then cancel over a short distance (I
believe you reduced the distance to 'dx' or something similar.) I claim
those waves never exist at all and therefore don't need to be canceled.


You say a physical impedance discontinuity can exist without
reflecting waves (in violation of the laws of physics). Please
explain how a physical impedance discontinuity can avoid
reflecting the incident wave.

A 70.7 volt EM wave is incident upon an impedance discontinuity
with a reflection coefficient of 0.7143 at point '+'. Exactly
how does that forward wave avoid being partially reflected from
the Rho=0.7143 impedance discontinuity at point '+'?

Here's the circuit:

SGCL---50 ohm T-line---+---1/2WL 300 ohm T-line---50 ohm load
Pfor1=100w--

Why are there no reflections at point '+' where the physical
reflection coefficient is 0.7143? Gene's Magic at work?
--
73, Cecil http://www.w5dxp.com