Thanks for this nice, informative video. If the problems were only in manufacturing PCBs, I would've also started to try out high-frequency designs. As I see it, most problems arise when something is not working as it should and you don't have the required test equipment. I saw some beginner-friendly VNAs up to 6GHz, but anything more, and the worth of my home would be at least triple the price after the acquisition. So, I'm stuck at somewhat sparse BGAs and 1GHz RF at max for a hobby. However, Libre VNA looks more and more enticing.
Etch tolerance is very critical on these boards as the patch dimensions should be as close as possible to the intended size. Always ask you PCB vendor to send measurements of the finished etched antenna array. Stay away from Rogers 3003 as it is very difficult to work with. And watch for the unbalanced stackup RF material will create. ISOLA FR408HR offers decent performance. Ideally you would want to use a transceiver that has LiP (Launcher in Pad) which eliminate the need for on-board antenna array.
I'm here to understand how those cheap human detection circuits you can find on aliexpress work. I'm curious, has anyone managed to make DSP with an arm MCU instead of FPGA? Is it possible?
@@Zachariah-Peterson Dear Mr. Peterson, thank you for your time to read my comment, but as far as I know in general, "Loss" is a positive parameter. It is obviously true that in a passive circuit (S21) for example for a two-port network is negative like -1dB; however, the Loss of this line is "1dB" not "-1dB". you may wanna look at any references if you like. Thanks for your time.
I think it's interesting how the meaning of "discrete" is changing as systems become more integrated. To me, discrete means individual transistors.
I like vacuum tubes
That was my idea as well. Very informative video regardless.
@@zeref783 Actually, I used to be a choob fanboi; I suppose I should have generalized to "individual elements."
Thanks for this nice, informative video. If the problems were only in manufacturing PCBs, I would've also started to try out high-frequency designs. As I see it, most problems arise when something is not working as it should and you don't have the required test equipment. I saw some beginner-friendly VNAs up to 6GHz, but anything more, and the worth of my home would be at least triple the price after the acquisition.
So, I'm stuck at somewhat sparse BGAs and 1GHz RF at max for a hobby. However, Libre VNA looks more and more enticing.
My man Zach is built different 💪
Thanks for great video.
how is the GB switch project progressing?
Where can I buy the same T-shirt with the Altium logo? :)
Informative video 🫡👍🏻
Etch tolerance is very critical on these boards as the patch dimensions should be as close as possible to the intended size. Always ask you PCB vendor to send measurements of the finished etched antenna array.
Stay away from Rogers 3003 as it is very difficult to work with. And watch for the unbalanced stackup RF material will create.
ISOLA FR408HR offers decent performance.
Ideally you would want to use a transceiver that has LiP (Launcher in Pad) which eliminate the need for on-board antenna array.
I'm here to understand how those cheap human detection circuits you can find on aliexpress work. I'm curious, has anyone managed to make DSP with an arm MCU instead of FPGA? Is it possible?
could any one send me the this pcb download link , the one zack use in this video ? pleaseeeee
Excuse me but why did you mention loss as a negative parameter while it has to be always positive?
Are you referring to the insertion loss plot? It is generally shown on a negative dB scale.
@@Zachariah-Peterson Dear Mr. Peterson, thank you for your time to read my comment, but as far as I know in general, "Loss" is a positive parameter. It is obviously true that in a passive circuit (S21) for example for a two-port network is negative like -1dB; however, the Loss of this line is "1dB" not "-1dB". you may wanna look at any references if you like. Thanks for your time.