Synopsys VCS might be a bit more popular than QUCS. We know about 1 link to it since March 2021 and only 1 link to QUCS. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
If you can get s parameter model you can use that. There are also generic transformer and coupled line models so long as you've got a way of characterising it you should be able to model it. https://sourceforge.net/projects/qucs/. Source: over 1 year ago
The last definition by Synopsys is generalized as: Open source software (OSS) is software that is distributed with its source code, making it available for use, modification, and distribution with its original rights. Source code is the part of software that most computer users don’t ever see; it’s the code computer programmers manipulate to control how a program or application behaves. - Source: dev.to / about 2 years ago
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