Disclaimer: This issue is boring. Not only because it has nothing to do with Cyber, AI, machine learning, etc. (nor do most of the things I do and write about). It’s boring because it has to do with only one…
Category: CAD
DXF Import In Octave
Nothing fancy, but I programmed a tool to import DXFs into GNU octave. Should be simple enough to convert to MATLAB, if necessary. Mainly I did it in order to integrate some of the work I do in KiCAD to…
QUCS-S: Return Of The OpenSouce!
Another Linux user open wound: For ages I have been stuck without proper circuit simulation in Linux. I don’t define myself a power-user (only as a super user, but only when I run sudo) as I run Ubuntu, but that…
The Perils of Port Extensions
This post concerns a much more simplified version of the previous one. Last time we dealt with an arbitrary length line, with an unknown characteristic impedance. For that matter, a double length line de-embedding structure was suggested. In this post,…
De-Embedding 2 Whole Degrees of Freedom
In the last post we discussed de-embedding a simple transmission line, namely a phase shifter and attenuator. Surprisingly, most structure that we might need to de-embed will be far from that, to say the least. To maintain a methodical approach,…
Basic De-Embedding, 1st Order Model
It occurred to me recently that although I named this site RF with care (for reasons I definitely cannot recall any more), I have not really written here anything RF or EM related in any way. So to start it…
Why We (probably) Suck as Engineers
So this has probably been bugging you for a while. Why you? Because it happened to you sometime in the last month, if not week and if not the last 24 hours! If it was a workday, of course. My…
CM102 Soundcard – The Aftermath
Truth be told, this project has been done for months. In the meanwhile I was doing endless job interviews, switched a job and in between life tends to get in the way. However this project turned out cooler than expected,…
Final Touches And Laying it All Down
Aside from going to production, there are only some minor changes left to do with the circuit at this point. So sadly, this is the last post about this short project. In this post I will review some minor changes…
Choosing Your Components (Just) Right
Enough with circuit theory for now, although I haven’t even began to touch the basics on that subject. Only in the area of feedback circuitry there are tons to know and explore about control theory, stability and various applications. These…