I have written two computer programs that you may find useful. I wrote them becuase I kept needing to perform the calculations and having an easy to use computer program made it easier for me. I hope you are able to make use of this software too which is why I am giving it away for free. This software is for windows machines and I have used it on Windows 7 and Windows 8 without issues. I have not tried the software yet on a Windows 10 machine.
Thermal Analysis will analyze a multilayer material stack and predict temperature rise for a packaged electronic device or an ideal heat source. It predicts the temperature rise across each material layer. This software makes a gross assumption about heat spreading in each layer. As a result, it will give a non-physical result under many different conditions. Consider this software to be a way to perform very quick trade studies. However, detailed numerical thermal analysis should be performed. Just download the software, extract (unzip) the files, and then run the installation program located in the extracted file.
Multi Transmission Line Analysis
This is a transmission line analysis program based on the quasi-static variational technique. It is useful for analyzing micro-strip, strip-line and other planar transmission lines such as suspended substrate stripline. Just download the software, extract (unzip) the files, and then run the installation program located in the extracted file.