Cecil Moore wrote:
I want you to stop and think a moment, about how an IDEAL INDUCTANCE
behaves in an antenna. (Sorry to shout, but every time I type "ideal
inductance" quietly, you seem to read something else :-)

Ian, please take your own advice. It's pretty obvious that you are
thinking about an IDEAL INDUCTANCE in terms of a lumped circuit
analysis
which is invalid when analyzing a STANDING-WAVE ANTENNA.

It makes life easier to compartmentalize your scientific world-view in
that way.... but it is deeply, fundamentally wrong.

In reality, all true scientific knowledge joins up seamlessly - that's
how we *know* it's true! If we can't see how it joins up, that means we
still have work to do. Dividing it into compartments that don't join up
is lazy and will always lead you false.

A fundamental physical property like inductance doesn't change its
behaviour depending on the situation it finds itself in. If you cut the
antenna wire and insert an ideal, lumped inductance, that inductance
will behave in exactly the same way as it does in any other circuit.

If you really looked hard at the math of antennas considered as
transmission lines, you would find there is no problem whatever about
inserting an ideal inductance, with no difference in current between its
two terminals.



--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek