On Fri, 29 Jan 2010 21:24:47 -0800 (PST), Roger
wrote:

Here is a paper describing the feedpoint impedance and how they
counteract the capacitive reactance without the typical matching
network.

http://www.ece.arizona.edu/~ziolkows..._July_2006.pdf

Not much original work there - It had been kicking around for years
prior to publication. Boeing Skunk Works stuff I posted here at least
10 years ago when it was more interestingly portrayed as negative
refraction elements.

A number of other papers on these antennas are located he

http://www.ece.arizona.edu/~ziolkows...0Antennas.html

a bibliography.... So what?

73's
Richard Clark, KB7QHC