tjuby
Junior Member level 1
HI, Last year I did a project where I mainly used CST Studio design for S-parameter analysis of different components, then I used the 2009 version.
This year I'm working on a larger project where I use some of the same components, and I use the 2010 version.
I just discovered something strange. I do the same simulations, just using an S-parameter job in studio design to check the same components, but the results differ. Not by much, but when I export to touchstone, and import in matlab to create figures where ie I compare S11 and S22 of the same component, they are not the same relative to each other as my old results.
Have they changed something in the solving routine? Or is it more probable that I am doing something differently? I to be honest, I cant really remember the settings I used last time, but they were not very advanced. I've tried changing some settings, ie. port impedance controlled by components, or setting it default to 50 Ohm. I've tried calculation for real/imaginary results and for magnitude (dB) results. Either way, the results differ from the ones I got in 2009.
I am confused :-?
This year I'm working on a larger project where I use some of the same components, and I use the 2010 version.
I just discovered something strange. I do the same simulations, just using an S-parameter job in studio design to check the same components, but the results differ. Not by much, but when I export to touchstone, and import in matlab to create figures where ie I compare S11 and S22 of the same component, they are not the same relative to each other as my old results.
Have they changed something in the solving routine? Or is it more probable that I am doing something differently? I to be honest, I cant really remember the settings I used last time, but they were not very advanced. I've tried changing some settings, ie. port impedance controlled by components, or setting it default to 50 Ohm. I've tried calculation for real/imaginary results and for magnitude (dB) results. Either way, the results differ from the ones I got in 2009.
I am confused :-?