How do we assess effect of ground plane size on system noise floor? I have HFSS data of a device containing a LTCC antenna mounted on a PCBA. The antenna is fed with a coplanar TL. I want to determine the effect of GP cuts/size on system noise floor. What is the best approach using HFSS simulation? I am evaluating using HFSS Circuit to simulate NF and including a dipole source in HFSS with added noise to look at S21. Is there any other approach I am not seeing?
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