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SPICE files contain netlists only, but not a complete schematic. Therefore, it’s not possible to create wires here. But the components are connected nonetheless, because nodes with the same node name are connected! Hence, the circuit can be simulated.
Thanks for your post! Indeed, I’ve already spent many thoughts about how to earn money with QucsStudio and keep the project alive this way. But it’s not easy.
I like the idea about open source. There are projects that are successful, but obviously this is not the case with Qucs. And the same holds for QucsStudio, unless some companies appear that pay me for all the work already done. Hm, pretty unrealistic.
On the other hand, I don’t like the idea of going fully into a proprietary, paid application. I also fear that this won’t be successful. But you are right: It’s a big problem that users can’t rely on the further development. I want to change this.
I’m still uncertain what way is the best to go on. Anyway, the next release will come this year, maybe even this month. And, yes, it will be free, and won’t be the last free version. Thanks to all who made a donation!
Currently, my plan is to find sponsors, companies that pay for new features, for support etc. Any hints, help and comments are very welcome here! Does anyone know a company that might be interested? Is there interest for paid tutorial videos, example files etc.? Could a crowd-funded feature list be successful? Or perhaps a paid version with very special features like PDK support?
Version 3.3.3-light is now available on the download page. It can be used to convert old schematics and data displays. Just open them and save them. After this, they can also be opened by the most recent QucsStudio version.
Version 3.3.3-light is now available on the download page. It can be used to convert old schematics and data displays. Just open them and save them. After this, they can also be opened by the most recent QucsStudio version.
Indeed, this feature has already been requested quite often. So, in the coming release, it will be possible to enter complex-valued port impedances for s-parameter simulations.
PS: I’ve also read the article in UKW-Berichte 2/2024 🙂
That is indeed great! And very interesting. And it seems that you do not need a special interface to QucsStudio. So this is really nice!
Using C++ would be best for QucsStudio, of course, but Python could be okay, too. Up to now, QucsStudio has no Python interface. Do you know how such an interface looks like? Can you help here?
Implementing MoM would be fantastic indeed! Can you explain how this should look like, e.g. what part should be performed by QucsStudio and what by Python? What packages will you use? Have you already examples etc.?
Yes, you’re right. Using variables here is not yet implemented, but it will be in the coming release.
Extending the component set is always nice. If somebody can provide the model equations for the microstrip taper, I will implement it.
Thanks a lot for the report! I can reproduce the bug and will fix it. It comes from the oversampling. So if you set the numbers of the harmonics equal in the HB component (e.g. both 16), I should work.
I just got the hint that there was a bug in the picture above (wrong connection of SnP component). Therefore, I removed it.
Here is the correct schematic for complex port impedances in s-parameter simulations. Note that port 2 of the file component X1 must be connected to the s-parameter source P1.
By the way, this concept gives correct results for noise figure NF and NFmin, but not for optimum source impedance Sopt.
