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Old March 19th 06, 03:10 AM posted to rec.radio.amateur.antenna
Gene Fuller
 
Posts: n/a
Default Current through coils

Cecil Moore wrote:
Gene Fuller wrote:

I could have sworn that you were insisting the phase still had meaning
in a standing wave environment.



I know that's what you thought, but you were mistaken.
By thinking that, you accidentally posted some support
for my side of the argument. Thanks very much.


Cecil,

I am attaching a few of your quotes in this thread. Sorry to hear about
your total loss of short term memory.


[Direct quotes from March 5-7]


Standing wave current is a net charge flow of zero. Standing wave
current is DIFFERENT from traveling wave current. At any and every
point, the standing wave current is NOT moving. Since it is not moving,
there is NO net charge flow.

******

To tell the truth, standing waves are a product of the human mind. The
forward and reflected waves couldn't care less about standing waves

Surely you understand that standing waves in a transmission line don't
flow - they just stand there, which is why they are called "standing
waves". Exactly the same principle applies to standing wave antennas.

The two traveling waves have to be analyzed separately and then
superposed to obtain valid results. If you analyze net current without
superposition, you are doing the same thing as superposing powers, which
is a known no-no.

******

The currents that are doing the flowing are the underlying current
components, the forward current and the reflected current and they are
close to equal. Everything you say about a coil is true for the forward
current and the reflected current. It is simply not true for the
standing wave current which is just a conceptual construct and not a
flowing phasor at all.

If you really want to accurately apply the principles you are asserting,
you must treat the forward current and reflected current separately and
then superpose the results. Applying your above principle to standing
wave current is akin to superposing power and that's a no-no.

I have never seen such a wide-spread blind spot.


[end quotes]

73,
Gene
W4SZ