Reg Edwards wrote:

I'm afraid Cecil has a fixation about standing waves and reflections.

They are part and parcel of a distributed network analysis
and are embedded in many transmission line equations.

As far as the constant current through the coil goes:

Neglecting losses, the forward current through a coil is
constant magnitude with changing phase. The reflected
current through a coil is constant magnitude with changing
phase. Those conditions satisfy the necessary and sufficient
conditions of the laws of physics concerning a coil.

The laws of physics do not require the phasor sum of the
forward current and reflected current to be constant
magnitude. In fact, the laws of physics prohibit the
standing wave current from being equal magnitude except
at equidistant points from a current maximum or minimum.
--
73, Cecil http://www.qsl.net/w5dxp