On Wed, 11 Apr 2007 15:30:50 -0400, tnom wrote:

There may be a new take on antenna design.

The Cross field antenna is said to have as much as 5db gain over a
traditional quarter wave. It has a bandwidth of 30% of the operating
frequency. It does this all at a height of only 3% of a wavelength.

If made into a CB antenna it would be about one foot tall.


http://www.crossedfieldantenna.com/

http://www.antennex.com/preview/cfa/cfa.htm

I've read a few things about cross field antennas and it seems that the
jury is still out whether the things really work as some claim they do.
I'm not really convinced. Yeah you do get a signal from such an antenna
but is the EM wave being generated as the proponents claim or is it due to
some other mechanism. That will take a lot more theory and some very
carefully performed experiments. You would figure if it was so easy and
obvious that in the past 100 plus years of radio it would have been
invented long ago and proved by experiment.

Regards;
Leland C. Scott
KC8LDO