Segments

Would anybody care to comment on choosing the optimal segments per wire in
NEC-2 ?

While simulating a di-pyramidal over a 2 octave band, I noticed significant
differences in impedances when trying to optimize segments.

For example, here's a sample of impedance vs. segments per wire at a
mid-frequency ( aperture is about 1/2 wavelength ).

    Segs Zant
----------- ----------------
    25 102.3 -j274.6
    50 62.7 -j41.1
    75 51.1 -j33.2
   100 45.8 -j29.7
   150 41.3 -j26.6

Note: At above 150, I reach max segs in my software.

I wonder if I can assume that the highest possible segmentation always yields
the most accurate results. I'll be using the impedance data to build matching
networks, so I'm wondering to what degree can I trust the generated data.

If you want to help me out with this one, but need more info, I'll be happy to
send you my model.

Thanks,
RC
Received on Sat Nov 25 1995 - 20:50:00 EST