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Originally posted by Enrico

FastHenry basic element is a long thin parallelepiped; but this does not mean that you cannot use parallelepipeds to model more complex structures, for instance ground planes that are by no means 'long', meaning not stretched in one direction only. Of course, given the basic element, long thin structures are modelled best, e.g. wires over a ground plane, or package traces, etc. but this is not necessarily a limitation.

Mind instead that inductance is a property of a closed loop; you have to be careful in using the results of your simulations on a section of the loop only, i.e. a partial inductance. You need to be well aware of what this means. For a discussion of the topic, you can refer to M. Kamon, "Fast Parasitic Extraction and Simulation of Three-Dimensional Interconnect via Quasistatic Analysis", PhD thesis at the Massachusetts Institute of Technology, Feb 1998; or our slides "ElectroMagnetic Solvers Basics" in the 'literature' page.


Best Regards,
Enrico

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Originally posted by Enrico

You can contact me at "su ppor t <at> fastfieldsolvers.com" (remove the spaces and replace the <at> with @; this is to avoid spam. I will reply you with my internal email), or filling up the form at the 'contacts' page.

If you can also provide me some additional information, i.e. the CAD you are using, and an example of your different busbar geometries, we can discuss the possibilities.

Best Regards,
Enrico

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Originally posted by Enrico

Yes you can, but you need some program to convert the output of your CAD to the FastHenry2 input file format. FastHenry input format has been designed to be easy, but it is based on rectangular parallelepipeds, not tiles, so it cannot easily model any geometry; but busbars should be ok.

You may also be able to directly script your CAD program to export the geometry (or at least, the relevant parts of it) into FastHenry. This may be the easier solution, as in the input geometry you already know where the key features are, that you want to export.

If you need help in doing that, we can provide assistance, as consulting is our main activity. In case, please feel free to contact me for providing the details, and we can discuss how to proceed.

Best Regards,
Enrico

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Originally posted by Enrico

If you are using Windows, this is simple to do, as FastHenry2 supports Automation. Therefore, you can fully control FastHenry2 from any language that supports Automation (Automation is not linked to any specific language, is a independent interface). You can find for instance some examples in the samples directory that you get upon installation (see the online help that you can open from FastHenry2 with the 'help' menu), that will show you how to control FastHenry2 from Excel, or from some VisualBasic script.

You can also find some examples about how to control FastHenry2 from MatLab in the forum, just search the term 'matlab'. For instance, you may want to read w*w.fastfieldsolvers.com/forum/topic.asp?TOPIC_ID=1082 (replace w*w with the three 'w', the * is inserted as anti-spam filter).

If you also want to dig into the source code, you need the original FastHenry distribution; however, this is usually not needed. In case, it is available on GitHub, see the 'download' page, 'source code'.
In case you are using the *nix version, you may want to look at the source code, and automate FastHenry via shell input/output redirection (parsing the output).

Finally, if you want to create equivalent circuits, you can use the pre-compiled utilities you can find in the installation directory (the path should already be added to the standard path, so you should be able to launch them from any command prompt).

Best Regards,
Enrico

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