No, I do not think it is electronically, but then I've never opened one up and looked.
FOr an antenna that is fed by coax. A straight dipolie is about 70-75 Ohms impedance.. Same as the coax
A Folded dipole is 300 ohms, Same as the old "Flat lead"
BUT.... When you put electronics between the antenna element, as winegard does, THen it does not matter if the antenna is a straight or folded dipole to the coax because the ELECTROINCS makes sure the coax sees the proper impedance.
NOTE: IT does matter to the electronics in the head.. but then they were put there by the folks who designed the antenna.
That's why I said "Either with amplifier in head = Proper load" THe coax does not "See" the antenna,. only the electronics (Amplifier).
This I do not.. Not much (not anythign I've seen to date) Beats a Sensar IV with Sensar Pro.. INCLUDING;.... In some cases..... Cable TV.