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: Engineering
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…
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…
Obsessive, Compulsive, Yet Hardly a Disorder
So this has happened to me more times than I can remember. Somebody tosses a piece of junk or another out on the street. I pick it up, hoping that this time it will work “out of the box”. Sometimes…
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…