On 17 feb, 18:04, "art" wrote:
On 17 Feb, 07:58, "Wimpie" wrote:

On 17 feb, 04:55, "art" wrote:

Is the Fariday rotation effect incorporated in any way with the basic
NEC 2 and 4 computor design programs?
Art

Hello Art,

If you main the rotation of polarization of a wave during transit in a
DC magnetized medium, it is NO for NEC2. I do not believe that it is
modeled in NEC4.

Best Regards,

Wim

Yes that is what I mean noting that since it cannot be cancelled it
thus applies to a.c. as well. I somehow believe that it is connected
in some way to curl but ofcourse I have no reference to it. I have the
distinct feeling that it refers to the offset in polarity created by
the horizontal vector of curl which thus means for the case of
equilibrium polarity cannot be at right angles to the radiating
elements surface or parallel to it . I can duplicate this situation
using NEC based computor programs i.e. tilt, but I cannot find
reference to it anywhere. One must remember that Faradays work is now
quite old with respect to modern day advances but then we are now
getting a bit deep for most readers. My computor program predates NEC
4 !
Regards
Art

Hello Art,

As far as I know, all (maybe most) simulators for antennas assume the
media to be HILS, you can only enter properties like u', u'' or e'
e'', or in the form of absolute u or e together with a loss factor.

Probably there will be specialized simulators or custom programs
within research facilities that can handle non-HILS meda, but I think
that is of no use for antenna design for radiocommunication where the
interface is air.

Of course for propagation faraday rotation can be of importance.

If a metallic structure gives rise to polarization change, this will
be shown by antenna simulators that can visualize field properties
like E and H.

Best Regards,

Wim
PA3DJS