I think Richard has hit the nail on the head. I wish calculation of
electromagnetic fields could be reduced to a simple equation. Any
undergraduate text on electromagnetics barely scratches the surface. I
suggest you check the site at www.nec2.org and download the .pdf version
of the "NEC Program Description -- Theory". Gives an overview of "Method
of Moments". As a foundation Kraus' Electromagnetics may help, and is
available used (and cheap) at www.bn.com. Also at the same site a
reprint of "Field Computation by Moment Methods" by Roger F. Harrington
can be obtained for $33.50. Then there is the "Finite Element" method as
used by "Ansoft's" HFSS".


Regards,

Frank





Allow me post a couple of formulae ?? formulas ??
How about equations?

Balanis 2 Ed. p 32-33
Reactive near field - .62 * A
where A = Square Root of (D^3)/lambda
D= length of a Hertzian dipole (both elements)
lambda is the wavelength of a transmitting frequency
radiating near field - 2*(D^2)/lambda
Outside of that is the far field.
This is area that you seem concerned about.
Krauss uses Reactive near field as inside lamda/(2 * pie)

Do you work for a group of physicists? I have encountered the
field equations from a physics text by Young and Friedman.


Dave