And could variable diameter be of practical use in antenna design?
Tapered elements are common used in HF. They tend to load the antenna a bit,
thus shortening it. Some BW increase results as well.
At the other extreme, a continuously inverse- tapered antenna is quite broad in
bandwidth. Thus the Oliver Lodge, or 'bowtie' antenna, from 1897.
Old, old stuff.
73,
Chip N1IR
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