NEC-LIST: Re: Plane wave excitation and far field patterns of large arrays

I have done it this way in NEC4:

Make sure you put sufficient segmentation on your dipoles. Use something
like 0.01 wavelength for segment lengths and make sure the segment
length to wire radius is <=3. Using the LD command, put loads on the
center segment of all of your dipoles. The value of the loads should be
the resistive part of the embedded element impedance. Using the EX
command, include the desired plane wave excitation and NEC will compute
the cross section in dBsm (sigma/lambda^2) Your answer may need a 6 dB
correction to remove the infinite ground plane if you've included one in
your model. This step is a little controversial and debatable.

Good luck.

[demime 1.01d removed an attachment of type text/x-vcard which had a name of Larry Goldstein.vcf]

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