A radiating stub does act differently than a lumped inductor, in both
modeling and reality. EZNEC should reflect this difference accurately.
If you're aware of a situation where you think it doesn't, please email
me the models illustrating the difficulty.

If you model a stub using a transmission line model, it should behave
exactly the same as a lossless lumped inductor at a given frequency.
However, it's an accurate model of reality only if the real stub has
exactly equal and opposite currents on the two conductors. That is, it's
an entirely non-radiating stub.

Roy Lewallen, W7EL

Cecil Moore wrote:
Roy Lewallen wrote:

If you could build an antenna from straight conductors and lumped
inductors, the result would be very close to EZNEC's predictions.


Hard to prove since lumped inductors are impossible in reality. Why
does EZNEC show so much difference between lumped inductors and stub
inductors? The difference in coils Vs stubs in reality is virtually
nill.