Just to be clear: what gives a folded dipole a slightly greater VSWR
bandwidth is NOT the "fold" - that simply causes an impedance
transformation. It's the presence of the spaced second wire that makes
it behave like a "fatter" dipole.
You can get exactly the same bandwidth improvement by including the
second wire but omitting the "fold". What I mean by that is: break the
second wire at the centre and connect each side to the feedpoint. You'll
get the same bandwidth improvement, you wont have to worry about
transforming from 300 Ohms to 50Ohms, and the "fatter" dipole will be a
slightly better match to 50 Ohms than a thinner dipole.
73,
Steve G3TXQ
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