Tom Donaly wrote:
Cecil Moore wrote:
The gradual change in Z0 really doesn't matter. What matters
is the *abrupt* change in Z0's at the coil to stinger impedance
discontinuity. That's where the abrupt phase shift occurs.

Yes it does.

It only matters from a quantitative standpoint and it
matters not one iota from a conceptual, qualitative
standpoint. We already have real world transmission
lines that change Z0 gradually. They obey the laws
of physics.
--
73, Cecil http://www.qsl.net/w5dxp