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: Programming
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…
Medical Imaging For Dummies Part 1 – Scattering Simpified
This subject I have been actively avoiding to write on. Not only because it’s a lot to write. All you bloggers out there know how tough it is sitting down at the end of the day, after 8-to-fuckall hours on…
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…
Fancy M-Scripting, The Function Expansion Episode
As I promised before, not all of these lessons will result in pretty code. This, however, is the worst I believe. Efficiency wise, though, this is the most beneficial. So let’s follow up on an example from the last lesson!…
Efficient m-script coding – pt. 1
Prettier code is always better. Actually, comprehensible code is always better, that’s why I document like a crazy person with no short term memory, while the latter is partially true. Sadly, some of the lessons to be learned in this…
Variable resistors in QUCS
While designing a 3-band equalizer, using QUCS (view previous post about QUCS here), the need for variable resisors came up. As the current versions of QUCS still don’t support EVALUE components, it was impossible to implement voltage controlled resistors (i.e.…