Paul R. Stoetzer wrote:
I have
seen many websites that show various antennas fed with twinlead, but
I've never seen my approach (the twinlead used for both the antenna and
feedline).

Balanis illustrates exactly that idea on page 18 of
"Antenna Theory, Analysis and Design", 2nd edition.
It is a very old idea. 50+ years ago, when I was a
Novice, it was standard practice to tie a knot in zip
cord 1/4WL from the end, unzip the cord down to the
knot, use the unzipped part for the 1/2WL antenna,
and use the rest for balanced feedline. It worked
like a charm in spite of the feedline losses.
--
73, Cecil http://www.qsl.net/w5dxp