I am designing a circularly polarized star Antenna and unable to plot option(axial ratio vs. frequency).
I know that in the Template Based Post-Processing window, I choose 'Farfield and Antenna Parameters' and below 'Farfield results' from the drop-down menus. Then, in the window I press 'Advanced'. I choose the broadband monitor, then I selected the frequency range, also theta and phi with 0°. In the drop-down menu right from 'Axis/Polarization' button I selected 'Axial Ratio' from the drop-down menu.
Finally I get this result see the file attached
So how can I get the real graph of the axial ratio (dB) vs frequency (GHz)
Read this tutorial: http://eee.guc.edu.eg/Courses/Communications/COMM905%20Advanced%20Communication%20Lab/plotting%20Gain%20or%20Axial%20Ratio%20vs.%20frequency%20in%20CST.pdf"
Abdulrahman Alqadami thanks for your answer, but this toturial gives the same result that I have on the attached picture.
Thanks,
your antenna is not a circularly polarized antenna. That is why it is coming like that. change your deign it will come below 3-dB within some frequency range.
Hey
Please what is the unit of Axial ratio plotted in CST is it ratio or dB ?
thanks a lot
Hey Passant Abbassi the unit of Axial ratio in CST is dB
Best Regards
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