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Old November 18th 07, 10:09 PM posted to rec.radio.amateur.antenna
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Default Superposition

Richard Harrison wrote:
Why is a principle so trivial as superposition worth a thread in this
newsgroup?


Because most of the posters to this newsgroup do not
know what happens to the energy in the waves during
superposition inside a transmission line. They seem
to understand superposition in free space but not
inside a transmission line. Maxwell's laws are the
same for EM waves in free space and inside a
transmission line.
--
73, Cecil http://www.w5dxp.com
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Old November 19th 07, 05:13 AM posted to rec.radio.amateur.antenna
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Default Superposition


"Cecil Moore" wrote in message
et...
Richard Harrison wrote:
Why is a principle so trivial as superposition worth a thread in this
newsgroup?


Because most of the posters to this newsgroup do not
know what happens to the energy in the waves during
superposition inside a transmission line. They seem
to understand superposition in free space but not
inside a transmission line. Maxwell's laws are the
same for EM waves in free space and inside a
transmission line.
--
73, Cecil http://www.w5dxp.com



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Old November 19th 07, 05:18 AM posted to rec.radio.amateur.antenna
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Default Superposition


"Sal M. Onella" wrote in message
...

"Cecil Moore" wrote in message
et...
Richard Harrison wrote:
Why is a principle so trivial as superposition worth a thread in this
newsgroup?


Because most of the posters to this newsgroup do not
know what happens to the energy in the waves during
superposition inside a transmission line. They seem
to understand superposition in free space but not
inside a transmission line. Maxwell's laws are the
same for EM waves in free space and inside a
transmission line.
--
73, Cecil http://www.w5dxp.com




Sorry for the blank post, above, -- double-click-itis set in.

I like 90% of these technical discussions. I'm a curious person by nature
but I don't always know what doors to pull open, so it's nice when a good
door is held open for me.

73
"Sal"
(KD6VKW)


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Old November 19th 07, 01:47 PM posted to rec.radio.amateur.antenna
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Default Superposition

Sal M. Onella wrote:
I like 90% of these technical discussions. I'm a curious person by nature
but I don't always know what doors to pull open, so it's nice when a good
door is held open for me.


It stands to reason that if interference is associated
with a redistribution of EM wave energy in free space,
essentially the same thing could happen in a transmission
line. Incidentally, interference is also associated with
the feedpoint impedance of a standing wave antenna. If
the feedpoint impedance of a dipole is 50 ohms, that's
a Z0 match to 50 ohm coax for an antenna supporting an
SWR far in excess of 1:1.
--
73, Cecil http://www.w5dxp.com
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