Generating 16 port touchstone file: not responding!

Updated Oct 4, 2020 by Altair Forum User

Hi,

I am trying to export Y-parameters of an array which includes 16 elements, hence, 16 ports. I want to create a .y16p file but every time I try to export POSTFEKO crashes and is not responding.

I know it is a lot of data to export, but is there any other way to get Zparameter data?

Thanks in advance!

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Altair Employee

Updated Nov 20, 2018 by Altair Forum User

Hello @Meerten

This sounds like a bug - would it be possible to attach your model files here or send them to the Feko support team so that we can reproduce the problem?

Altair Employee

Updated Nov 20, 2018 by Altair Forum User

Hello @Peter Futter,

Thanks for your quick response! I found a workaround. Now I just go to the S-parameter configuration in CADFEKO and check the 'Export S-parameter to Touchstone file (* .snp)'. Then it automatically computes the .s16p file and with this file I can post-process and convert it to the .y16p file.

However, shall I still include the model files, so that you can figure out if it is a bug or something?

Altair Employee

Updated Nov 20, 2018 by Madelé

However, shall I still include the model files, so that you can figure out if it is a bug or something?

Hi @Meerten

It would be great if you could provide the files (attach or send to support) so that we can take a look at what is going wrong.

Thanks!

Altair Employee

Unable to find an attachment - read this blog

Updated Nov 20, 2018 by Altair Forum User

Here are the model files. Let me know if it was a bug or a mistake I made!

Altair Employee

Updated Nov 20, 2018 by Madelé

It looks like a performance bug when exporting Y and Z parameters - we'll ask our developers to investigate. I didn't see any mistake in your model.

Exporting the S-parameters (during simulation or from POSTFEKO) seems to work and will have to be used as a workaround for now (like you mentioned).

Altair Employee

Nov 22, 2018

Updated Nov 22, 2018 by Altair Forum User

Thanks for the support!

Altair Employee

Dec 12, 2018

Updated Dec 12, 2018 by Madelé

@Meerten, our developers have investigated and fixed the performance problem with Y and Z parameter export. The fix should go out with an update early in 2019. Thanks for bringing the issue to our attention!