Yep Homer, that is pretty much what I think should happen at this point...the (+ -) signs indicate phase differences, and I believe the current log should reflect the lower portion of the 5/8 wave is out of phase with the top 1/2 wave. I would expect the signs to be different...similar to what we see in the Skeleton Sleeve Fed model.
Note the image below from Maxwell's Reflections II, that the currents on the elements of the dipole are in phase...going in the same direction. The feed point of a center fed dipole does not show a perfect match with the feed line, so we see indicated some common mode currents flowing on the outside of the feed line due to the difference, and thus we have a lack of balance and symmetry. But if the feed point matched the feed line perfectly...then the dipole would radiate without common mode currents. So Homer, you'll see how the sign of the phase follows the rules noted above.
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We're familiar with the idea that feed line currents should not radiate when the line shows equal magnitude and opposite phase (direction). In this case it is due to feed line cancellation which is desirable.
I use this issue about feed lines and the Maxwell's dipole as examples of the cancellation idea. This is similar to the cancellation I see at the base of the 5/8 wave radiator, where the phase signs should be noted to be different due to part of the radiator being out of phase. I can't be 100% sure, but this is what I think.
Here are two Eznec models of a simple dipole. Both models have the phase turned on. I tricked one to show it to be out of phase for this post. You will see that Eznec handles this correctly, but as you will also note even tough we see this problem that defies the cancellation theory, so-to-speak, this does not ill-affect the gain, pattern, or match as best I can tell. If you check the tabular currents log for either model, segment by segment, you will also see a little difference in the current magnitudes. This small difference will be reflected as CMC on the shield of the feed line. This example is how I see this issue and wonder.
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As far as I'm concerned this is not a big deal, because my buddies likely care less about antenna currents in modeling, but in Shockwave's case, trying to satisfy some regulation or patent requirement for his antenna business, he probably found this issue the very Eznec thing that gave him his problems.
