negative directivity Опции

[sergei94]

in my project the final device has in certain frequencies negative directivity

i have changed the directivity evaluation twice the post processing,
but still i cant find the cause for this fenomena
because directivity has to be posivite.

[saab]

That is the point... you are not confident with CST stuff and right approach. On a vertical axis directivity- gain- current- power density in dB and it could be negative.
That is normally.
CST just is hang on, or stupid settings, or needs SPXX. We don't know.
But without topic starter, that is meaning only. In any case that isn't
story about far zone antenna parameter.