This is a plot from CST microwave studios of the farfield beam pattern of an antenna. I'm having trouble understanding why the plot isn't single-valued (2nd red circle) and also why there are blue lines. Any help would be much appreciated
Electrical – What are the extra lines on this farfield plot
antennafar-field
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Best Answer
Here's how I see it: -
I've extended the blue lines and they form an angle that is 75.8 degrees and coincide with the -3 dB points from a peak magnitude of 7.28 dBi.
I have no idea which 2nd red circle you mean and why you expect something that is single valued.