What should be the ideal value(graph) of Cross and Co polarization for a designed antenna in HFSS? I am confuse about these two terms if anyone can explain it then please help me. Thanks.
An ideal graph should have the desired polar diagram for co-polar, and zero cross-polar, in the E-plane and the H-plane. Look in the index of some books about antennas under polarization, or do an internet search and look at some antenna polar diagrams.
hi
Depend on antenna coordinate system you can simulate co-pol of E and H-planes at phi = 0deg and phi = 90 deg respectively. In the most cases, co-pol of E and H-planes occur at phi = 0deg and phi = 90 deg respectively.
you can use the following way:
in the XY plane :(theta=0, Phi=all values),
in the YZ plane (theta=all values, Phi=90 deg),
in the XZ plane (Thea=all values, Phi= O deg)
Since there is no information shared about the antenna type, I assume its a linearly polarised (which most of them are). Copolarization refers to the antenna E field in the intended direction while cross-polarization is the (unintended) E field in the orthogonal direction. [The same logic applies to the H field.] Polarization is fundamental to antenna orientation for EM wave radiation and reception.
A standard measure is the difference between the two levels (in dB), and the number will be larger for an antenna where the desired to undesired gap is more. Regarding ideal value, it needs to be assessed against your antenna type :) and target levels.
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