Every time I run the following varFDTD simulation, the results change.
The attached script sets up the material properties, defines the geometry, sets up the varFDTD simulation, runs, and then plots the S parameters.
The figure below is the results of 4 consecutive runs of the script. As can be seen, the results are different each time, and are also non-sensical (|S|>1 for a passive structure).
I have tried changing the meshing options, and some of the varFDTD options.
Any help would be appreciated.
S_param_debug.lsf (6.6 KB)