Re: NEC-LIST: Image Plane Log Periodic Array

Hi,

I often modelled reflector antennas in "real" environment to grasp the
isolation for repeaters, co-location etc. and - it works fine. Wire mesh
objects are usually good replacement for the real thing BUT only if
modelled in free space. Cliff is as bad as real ground since elevation
diagrams are considered for "infinite" distance anyway. If anything seems
odd, check for currents in wire mesh. Any irregularity counts for mistakes
in segmentation, mutual connection of segments, or mesh size. After you
debug your mesh, de-segmentation may take place. If everything is OK, your
mesh model will work fine with least segments as well, and with no extra
segmentation at joints. Take great care when rotating a mesh, as it may get
"disconnected" due to rounding of coordinates. My approach to this is
rounding to two decimal places prior to filling it into NEC.

Good luck

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