Cecil,

Thanks. You just validated my point. Kraus absolutely does not use
component currents for any serious analysis; he uses only total current.
Likewise, it appears that Balanis is merely waving his hands as well.
The quote you provided comes from Chapter 10, on traveling wave
antennas, not from a chapter on simple dipole antennas. Does he actually
load these components into equations and carry out the analysis in detail?

Subcomponents of the current may be useful for handwaving explanations,
but they are not superior to the standard net current model. Any
modeling results must agree with the standard model (widely used for
more than 100 years) or else the simple handwaving model is likely to be
bogus.

Soooo, we are back to the beginning. There is minimal current phase
shift in a dipole or monopole antenna, certainly nothing like the the 30
to 60 degree "replacement" phase shift you have been claiming. There is
no mysterious "current drop". Any reduction in measured (or modeled)
current can (and must) be accounted by shunt currents.

What's left?

Bye,
Gene
W4SZ


Cecil Moore wrote:


Check out my tag line, Gene. Balanis says we can use the component
currents If and Ib to analyze a standing-wave antenna. Kraus says
essentially the same thing when he says: "A sinusoidal current
distribution may be regarded as the standing wave produced by two
uniform (unattenuated) traveling waves of equal amplitude moving in
opposite directions along an antenna." This was in regards to the
"Fields of a thin linear antenna with a uniform traveling wave."