Hi everyone, and welcome to ByTechLab!
My name is Andrzej Laczewski — or just Andrew in English.
I’m an electronics engineer and multidisciplinary maker based in Poland. I built this site to document and share the technical projects I work on in my free time — from RF, through analog/digital circuits and embedded software, to mechanical creations and 3D-printed prototypes. Here you’ll find in-depth write-ups, design files, measurements, and lessons learned from real builds.
Feel free to explore the projects, leave comments, or drop me a message if you have questions or feedback!
I’m an electronics engineer and multidisciplinary maker based in Poland. I built this site to document and share the technical projects I work on in my free time — from RF, through analog/digital circuits and embedded software, to mechanical creations and 3D-printed prototypes. Here you’ll find in-depth write-ups, design files, measurements, and lessons learned from real builds.
Feel free to explore the projects, leave comments, or drop me a message if you have questions or feedback!
PCB Log Periodic Antenna (0.8-6 GHz)
This post together with previous antenna related posts is a introduction to a open-source library of wide-band general purpose antennas that I’m planning to create. I will share all information’s about the design process together with detailed electromagnetic simulations results, measurements and assembly instructions so…


