Thanks folks Got me curious about adapting this to 1296, or 2404
MHz for quick and dirty antenna to use in contests! tho its an
interesting design, by the time you create this, feed this, and with
the loss's envolved, probably NOT worth the effort! An interesting
use of PC material, non -the-less ! Maybe the Log Periodiotic is less
critical to Board Xc, and Spaceing, then other antenna types? But,
then the (stripline) feedline loss's alone would probably cancel any
gain from the antenna. Again folks , thanks!
When I start thinking- it gets Dangerous out there!

Jeff Liebermann wrote:
On Wed, 27 Aug 2008 10:22:19 -0700, Roy Lewallen
wrote:

I routinely use EZNEC to design antennas printed on a substrate. I do
the basic design then apply a fudge factor to the conductor width and
length derived from comparisons between model results and measurements
of real antennas. Final designs usually take some adjustment even at
that. However, I haven't tried this for any antenna that depends
strongly on coupling between elements, such as a Yagi, because the
mutual coupling will also be affected by the substrate and won't be so
easy to approximate.