hfss symmetry boundary conditions
Hello shahid78,
It understand that
. The patch antenna I am simulating has H-plane symmetry, so I was using a PMC symmetry plane to cut it in half.
It turns out that the scale was off on my graphs, as I had a -300 dB null at broadside on the x-pol at broadside for the H-plane, so that was distorting the graph. Silly me for not looking at the scale
. My H-plane co-pol and x-pol now match the results I got for the patch without the PMC boundary.
The E-plane, however, has a slight problem. The co-pol is fine, but the x-pol is computed to be zero when using the symmetry boundary. It is definitely not zero, and the original model predicts it to be, while small, about -60 dB. Then again, when the x-pol is this small, who cares, right? I have a feeling this might have to do with boundary conditions. Nevertheless, if there is a way around this, it would be nice to compute the x-pol for the E-plane as it may be significant for other designs. Does anyone have any ideas?
I attached my models here.
Thanks in advance!