RadioBanter - View Single Post

March 27th 06, 03:09 PM posted to rec.radio.amateur.antenna

wrote:
I feel sorry for anyone who has to deal with you on a daily basis.

The distributed network model, with its superposition of forward
and reflected waves, explains everything without having to
resort to displacement currents.

The distributed network model is more powerful than the lumped
circuit model. The lumped circuit model is a subset of the
distributed network model.

When the two models agree, all is well. When the two models
disagree, the distributed network model is right and the
lumped circuit model is wrong.

You assume displacement currents exist because your model
requires them, not because they exist in reality. The distributed
network model illustrates just how unimportant displacement
currents really are. In the distributed network model, displacement
currents are often omitted as negligible.

In a high-Q coil, in a standing wave environment, radiation from
and losses in the coil are often negligible and can be ignored.
The large part of what happens to the standing wave current is
simply superposition of the forward and reflected waves. No
magic explanations required.

The delay through a real world 75m bugcatcher coil, predicted by
the distributed network model, is tens of degrees, not the faster
than light speed predicted by the lumped circuit model.
--
73, Cecil http://www.qsl.net/w5dxp