On 25 jun, 10:00, Cecil Moore wrote:
On Jun 25, 2:13*am, lu6etj wrote:

In a TL, instead, total destructive interference in one point would
mean energy stop flowing from that point forwards (is it OK say
"forwards"?) and reverse its flow direction doubling his value, is it
OK?.

In our ham transmission line systems, the goal is to accomplish total
destructive interference toward the source, i.e. zero reflected energy
incident upon the source. So let's talk about destructive interference
toward the source and constructive interference toward the load.

You name it "redistribution" too, not reflection.

By definition, reflection is something that happens to a single wave.
By definition, superposition involves two or more waves. The
redistribution that I am talking about can include both reflection and
superposition if both are present. Depending upon the system
configuration, both may be present, both may be absent, or one exist
without the other.

Well, my
question was how we can set (devise) an experiment to get such
behaviour in a TL?

I've presented it before and it is a simple Z0-match involving a 1/4WL
matching section.

50w-----50 ohm------+------1/4WL 300 ohm------1800 ohm load

On the source side, rho at '+' is 0.7143

Using a TDR, we can verify that there is indeed a reflection from the
50/300 ohm impedance discontinuity. What happens to that reflection
during steady-state?

What happens to Vfor1(rho) = 50v(0.7143) = 35.7v?

What happens to Pfor1(rho^2) = 50w(0.51) = 25.5w?
--
73, Cecil, w5dxp.com

Sorry. Cecil, I do not catch you (final numeric example), would you
mind give to me a more explanatory/explicit answer? (the rest OK). 73
Miguel

On Jun 25, 3:27*pm, lu6etj wrote:
Sorry. Cecil, I do not catch you (final numeric example), would you
mind give to me a more explanatory/explicit answer?

I previously had a senior moment and changed contexts in the middle of
a posting and I apologize for any confusion. Would you enlighten me as
to the area of the discussion that you don't catch? Do you understand
physical reflection and transmission coefficients and their effect on
voltage, current, and power?
--
73, Cecil, w5dxp.com

On 27 jun, 11:37, Cecil Moore wrote:
On Jun 25, 3:27*pm, lu6etj wrote:

Sorry. Cecil, I do not catch you (final numeric example), would you
mind give to me a more explanatory/explicit answer?

I previously had a senior moment and changed contexts in the middle of
a posting and I apologize for any confusion. Would you enlighten me as
to the area of the discussion that you don't catch? Do you understand
physical reflection and transmission coefficients and their effect on
voltage, current, and power?
--
73, Cecil, w5dxp.com

Thanks Cecil:

Examples of you that I saw in recent weeks were about interferences
generated by a single real generator and reflections, resulting, for
example, in constructive/destructive interference responsible of
changes in energy flow direction starting from the line point where
those interferences occurs. In a nutshell: In post 127 I asked you for
an example/experiment based in TWO real generators to assimilate it to
more familiar double slit interference phenomenom (TWO coherent
sources) rendering energy redistribution inside one dimensional TL
space, two sources in tridimensional space gives maximuns and nulls on
screen (redistribution). Well, I ask you for identical example in
unidimensional space rendering a phenomenom similar as reflection (one
wave) but with interference (two waves). Sorry I do not know how
better translate my question to english words.
I not catched your answer because it does not match my question :)

Thank you very much in advance. Miguel - LU6ETJ

PS: On Google interface, inside thread's tittle = options you can
select fixed text, to correctly see ASCII drawings.