Yuri Blanarovich wrote:
You mean that when having quarter wave resonant antenna, with standing wave
(current node at the tip, voltage node at the base) that is your 90 degrees
apart?

No, on a lossless wire or transmission line with pure
standing waves, at any *PLANE* intersecting the wire or
transmission line, the measured net voltage will be 90
degrees out of phase with the measured net current.

Vtot(t) = Vfor(t) + Vref(t) and |Vfor|=|Vref|

Itot(t) = Ifor(t) - Iref(t) and |Ifor|=|Iref|

The negative sign on Iref(t) puts Itot(t) 90
degrees out of phase with Vtot(t). You can easily
prove that for yourself.

By definition, there cannot be any real average or
real instantaneous power (watts) in a standing wave.
--
73, Cecil http://www.w5dxp.com