Hi everyone, im new to this group so i hope you can help me...
I've been working with HFSS for a while now, designing RF coils for MRI. The structure is pretty simple - a single turn coil with a coax feed. the feed is blocked by a copper block on its port end, and the inner coax connects to the coil... (coil radius=7cm) the problem is that i keep getting negative real part for my impedance in low freq. (around 100MHz).
Happend to any of you? what's that supposed to mean in HFSS?
thanks in advance
Alex