[BC] FM antenna radiation patterns

[Steve Michaels N4AY]

I am curious-after looking at Richard Fry's paper, it would appear that the
ring-stub radiator has a drastically different pattern from the rest.
Without using names (they will be obvious from his presentation) why would
anybody want that design?  I don't believe everything I see or read, but
this seems kinda wacky..  

 

The website is rfry.org  presentation link on the bottom of the page
pertaining to zero sidelobe antennas.

 

And I do apologize for what may have been an issue addressed before.

 

TNX,

Steve