Dear Master Robert, I do not know how can I thank you. You are sharing priceless information with us which we normally must strive a lot to get those knowledge. Now I just sit and watch your videos while drinking my coffee. I hope one day I can offer you a coffee to thank you.
please. confirm my understanding the rough rule (1:41) ( i'm not strong in English): if rise time (ns) is longer than interconnections (inches) then we don't find ringing? This means that there is no need to worry?
Great video as always, thanks. That point you made at the end feels kind of like Heisenberg's principle as it applies to PCBs: You cannot measure what is going on, without affecting what is going on. I was hoping to see some tutorial on how to use this modeling software, but I think you may have done tutorials like this in the past. So I'll look through your videos to find one.
🤔 The only scenario/exception where the gnd copper with via fence between the traces would make sense is: two seperate Conductor-backed coplanar waveguides (CBCPW) on two layer board. But in that case also the width of that copper pour (that is part of the defining GND/impedance) should probably higher/wider 🙃
Rick Hartley pointed out that copper pour could be effective for power integrity in not too good stackups if you go above GHz range because all capacitors become inductive and even few pF gains in power decoupling make a difference.
Hey I think you gave your email for questions on a different video. Would you mind if I asked you some questions sometime? I'm an EMC technician and I really want to understand all of these principles so I can help these customers that come in and have no idea how to fix it.
We were powering an antenna into a reverb chamber and we were only putting 1dBm of power, how is it that we were seeing a 60V/m field? I know the answer but I want to see what people think.
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Dear Master Robert,
I do not know how can I thank you. You are sharing priceless information with us which we normally must strive a lot to get those knowledge. Now I just sit and watch your videos while drinking my coffee. I hope one day I can offer you a coffee to thank you.
I want to say that is great video! It took me 3 hours to understand and write down. Thank you Robert!
Eric Bogatin always has very interesting presentations ! Thank you both.
Amazing discussion! really valuable information and great insights.
wow thanks, every topic MR Bogatin discusses I am interested 100% :)
Wow! Super! I look forward to watch this!
Next great video, thanks for sharing. I love to watch videos with mr. Bogatin
please. confirm my understanding the rough rule (1:41) ( i'm not strong in English): if rise time (ns) is longer than interconnections (inches) then we don't find ringing? This means that there is no need to worry?
Great video as always, thanks. That point you made at the end feels kind of like Heisenberg's principle as it applies to PCBs: You cannot measure what is going on, without affecting what is going on.
I was hoping to see some tutorial on how to use this modeling software, but I think you may have done tutorials like this in the past. So I'll look through your videos to find one.
Thanks for the new video.
Prof Bogatin is Super Super Super Brilliant!!!!
Very Nice.
I'd be very interested in seeing a video about a free alternative to ltspice.
🤔 The only scenario/exception where the gnd copper with via fence between the traces would make sense is: two seperate Conductor-backed coplanar waveguides (CBCPW) on two layer board.
But in that case also the width of that copper pour (that is part of the defining GND/impedance) should probably higher/wider 🙃
Rick Hartley pointed out that copper pour could be effective for power integrity in not too good stackups if you go above GHz range because all capacitors become inductive and even few pF gains in power decoupling make a difference.
Hey I think you gave your email for questions on a different video. Would you mind if I asked you some questions sometime? I'm an EMC technician and I really want to understand all of these principles so I can help these customers that come in and have no idea how to fix it.
Yep.... reflections are a basic property of transmission lines. It reminds me of VSWR
We were powering an antenna into a reverb chamber and we were only putting 1dBm of power, how is it that we were seeing a 60V/m field? I know the answer but I want to see what people think.
I know the answer, too. I am looking at what you have to say about it so I can confirm or reject it.
Thanks ,can we get free subscription to mr Eric acadym