Roy Lewallen wrote:
There's no such thing as "standing wave current". You'll find no
references to this fictitious entity in any electromagnetics text.

On the contrary,

"Traveling Wave Engineering", R.K.Moore, page 134:

Fig. 5-12. Voltage and Current Standing Waves on
open-circuited line.

i = Re(V+/Z0)[e^j(wt+bd)+e^j(wt-bd)

This is the same equation for standing wave current
that appears in "Fields and Waves ...", Ramo and
Whinnery.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com