Reflection coefficient graph yielding non physical results when I add a far field request

Ianrchavez

I'm having a weird issue, and I'm hoping there's a simple solution here.

I made a patch antenna with a rectangular cut out. 

When I simulate it without requesting a far field, it gives me results that seem physical. 

As soon as I add the far field request, my reflection coefficient plot yielded non physical results. 

Nothing changed about the model, I simply requested a far field. 

 

 

 

Mel

Please attach the *.cfx

The *.cfs is the session file :-)