Impedance Controlled PCB Features {Microstrip Line & Coplanar Waveguide with Ground} (034)

[@何銘軒-o5s]

Thank you for your professional explanation, which saved my master‘s career. Because I major in material engineering, I didn’t know anything about the transmission line design at all, but after watching your video, I had a preliminary understanding of CPW (coplanar waveguide). Now I can design my material as CPW. Thank you very very much.😊

[@eie_for_you]

WOW! I am so glad that my video was a big help to you! You are very, very welcome! 🙂

[@dennisqwertyuiop]

very good,,thanks for your time

[@eie_for_you]

My pleasure!

[@asif530]

Awesome video. Absolutely well done and good results with your experiments. This is so useful ..

[@eie_for_you]

Thanks, man! The good news is, it is in reach of most every experimenter thanks to the on-line calculators.

[@justcroatboy]

Really fantastic explain,and can see you know what you do. And yes...question. How to calculate stripline for 2 transistor lin. amplifier,like in some linear is?

[@eie_for_you]

Many, many factors here. My method of operation? Review documents like this one: drive.google.com/file/d/1iuPO1tRLOUhiJBPB0SK6KoM4ijQ_TDX3/view?usp=share_link to determine what exactly to call what you are trying to design because nomenclature is *everything* in this business. Then I would look for an on-line calculator to calculate the necessary stuff. I'd create a quickie, sanity check experimental version, modify your design as needed per the experiment, then create the final design. You can kinda see my process in this other video of mine dealing with an impedance controlled PDB design (in the end): kzbin.info/www/bejne/bWmcgWSulq-Wlbc

[@dancorneanu]

Nice video. Hey, how did you build your test board? did you etch it or did you use a CNC to remove the copper?

[@eie_for_you]

I very carefully placed electrical tape where the trace and any other copper needed to be, leaving all the rest exposed. I then etched it using Ammonium Persulfate. NOTE: This stuff likes to be *real* warm in order to work. I had to have my etching container on a heating pad (for my back) turned up to high to make it work. 🙂