[BC] New antenna for AM broadcasting

[RichardBJohnson at comcast.net]

Hello all,
A new type of antenna has been developed that should solve
the real estate problem for many AM broadcasters. The antenna
is constructed entirely under ground and uses electrodes below
the counterpoise (ground system) to create a virtual image of
a vertical antenna without actually having to construct one
above ground level. It functions as in the following description.

Two synchronized fields, one electric and one magnetic, are created
by two separate stimulating devices each of which is given half
the final power of the radio wave synthesized by the geometric
cross-product of the said fields so as to form an intense Poynting
vector which expands towards infinity, from the original small volume.

Two electrodes are fed with about half the transmitter power through
a matching and isolating transformer so as to cause a curved electric
field as indicated by the E lines according to Maxwell's laws. Two
circular plates are separately fed by an appropriately phased voltage,
causing a displacement current, via a matching and isolating transformer
and the radio frequency displacement current produces a corresponding
magnetic field H by reason of Maxwell's law D' = ALPHA XH which field
curves around the antenna crossing the E lines so as to synthesize
the Poynting vector. See 

http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/maxeq.html

The antenna is said to provide approximately the same field at 1 km
as a more conventional 1/4 wave vertical antenna. Experiments have
shown that buildings may be constructed above the antenna without any
effect because the virtual antenna produces a field which is identical
to and parallel with the field distortion that could normally exist
with such a building in close proximity. Such a parallel field results
in no net current flow and hence no field distortion.

This is a picture of the new antenna.

http://www.blogcdn.com/www.engadget.com/media/2008/04/dextre-april-fools.jpg

Cheers,
Richard B. Johnson
Book: http://www.AbominableFirebug.com/