RadioBanter - View Single Post

March 10th 06, 06:36 PM posted to rec.radio.amateur.antenna

wrote:

That is incorrect for the conditions we are outlining, and it is
misleading Cecil. It has him lost in a world of reflections. You have
gone outside the limits of the model by assuming, incorrectly, the
inductor has no or little flux linkage from end-to-end and has large
stray capacitance to the outside world compared to load impedance. The
conductor used to build a inductor does not have current slowly winding
its way along that path.

There is no virtually no difference in phase delay in current at each
end of a relatively compact inductor. It is very easy to measure that.
It also have very little group delay compared to the group delay one
would expect from a transmission line or antenna the same length. I
know that because I have measured it hundreds of times.
(snip)

Real world inductors cover a wide range of construction from tiny
(with respect to wavelength) units that have tight flux linkage
between all turns, to extended things that fade into slow wave, high
inductance transmission lines (think of a straight conductor with
ferrite beads strung on it. Any discussion of inductors and waves
needs to either select an example inductor for discussion, or remain
general enough to cover anything that might be called an inductor.

Or else, endless and pointless arguments will ensue.