Does ASITIC simulate eddy currents?
Eddy currents in the conductors are included, see the previous question. As far as bulk eddy currents are concerned: Version 10.20.99 and up ASITIC now models eddy currents for “Manhatten” geometries using a fast 2D approximation. This has been tested against measurement for square single and multi-layer structures. Versions prior to 10.20.99 No. ASITIC calculates the magnetostatic partial inductance matrix in free space neglecting the substrate completely. Thus, no magnetically induced currents are assumed to exist in the substrate. For highly conductive substrates (less than 1 ohm-cm) , which can be found in CMOS processes, eddy currents do exist and severely limit the Q at higher frequencies. To address this problem, upgrade to the latest version of ASITIC.
