Cecil Moore wrote:

Keith Dysart wrote:

Perhaps there is just no reason why the "phase shifts" should add
to 90. That would make the problem go away.


But there is every reason why the phase shifts *must*
add up to 90 degrees (or 270 or 450 or ...).

That's true only if you assume the desired feedpoint impedance must be
the lowest possible value. And I think, as you have pointed out on
more than one occasion, the current maximum is not usually located at
the feedpoint, where it would otherwise be if the current minimum is
located 90 degrees away.

73 jk