Glad I found this channel, my new electronics favorite darling. Please keep it up. All demonstrations are valuable especially for young people so they can see it's not absurdly difficult to start with electronics. I wish one day kids will ask for their first oscilloscope instead of another iPhone for xmas. You are doing very important job for society. 👍
Very nice, clocking the controller directly from the same clock as the RF source is actually a very smart idea. I might give this thing a try myself, I like it, it seams like a great circuit to play around with and add some additional bits and pieces. Thank you very much, Gregory.
@@AllElectronicsChannel Interesting idea, you would then be able to directly inject your data into the feedback loop. However you would also depend on the clock cycle perfect execution of the controllers code which I'm not sure if it is always given.
Gregory , your videos are spot on . keep on going , your knowledge is well admired !!!! Maybe you should post a video about your background .... Uni ? a lab tour ?
instead using one inversor gate , you can also take the microcontroller osc out signal and apply to the modulator and use 4 inversors at the output to get some more power at the antenna.
Hi! Nice idea! Looked something for spread spectrum transmission and found your channel Little question: why is switching diodes used? If diode opens this leads 5V edge on delimiting capacitor and creates harmonics on output amps. Or this is wrong assumption?
That copper tape / via construction is interesting. I mill my PCBs, and have occasionally drilled out an array of holes to do "via stitching", where I solder a wire through on both sides... but I think that tape with the bigger holes and no breaks in the ground plane might be better? Where can I find more about that construction technique?
Measured a single inductor and also the two coupled in series. That formula on the white board that I forgot to clear relates the inductances and K factor
@@AllElectronicsChannel Now we need a hardware receiver. I wonder if something like STM32 or ESP32 could be used to produce early/late/punctual sequences to avoid the need for FPGA.
@@AllElectronicsChannel Yep. I'm toying with such an idea too. To avoid the need for high-speed ADC and high-speed processing, perform de-spreading by analog multiplication, maybe using SA612 too.
Beautiful! We could downcovert RF using a polyphase anti-mage mixer, like the Tayloe www.pa3fwm.nl/technotes/tn17c.html. Man... probably the same ATmega88 could work in an analog setup as this!!
Excelente proyecto, lástima la traba idiomática. Pero algo se comprende, el lenguaje técnico es universal. Esto es la base del CDMA? Si Data fuese una trama de un código? Saludos desde Córdoba Argentina
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This channel too underrated. You deserve more!
I accept
Thank you! What could we do to make more people discover the channel?
Excellent video! Glad to see you got it working so well. 🙂
Thank you for the support Baltic!
Glad I found this channel, my new electronics favorite darling.
Please keep it up. All demonstrations are valuable especially for young people so they can see it's not absurdly difficult to start with electronics.
I wish one day kids will ask for their first oscilloscope instead of another iPhone for xmas.
You are doing very important job for society. 👍
Thank you so much! If possible, help me spread the channel 🥳🥰
Very nice, clocking the controller directly from the same clock as the RF source is actually a very smart idea.
I might give this thing a try myself, I like it, it seams like a great circuit to play around with and add some additional bits and pieces.
Thank you very much, Gregory.
Only to think before sleep: and if we place and AVR clocked by the VCO as an fractional divider in a PLL? 😅😂
@@AllElectronicsChannel Interesting idea, you would then be able to directly inject your data into the feedback loop.
However you would also depend on the clock cycle perfect execution of the controllers code which I'm not sure if it is always given.
This channel is definitely gonna blow up. Great content! DLL trick was really awesome.
Thank you!
Gregory , your videos are spot on . keep on going , your knowledge is well admired !!!! Maybe you should post a video about your background .... Uni ? a lab tour ?
Thank you!! My lab is so small I don't know if it is possible to record a lab tour hahaha
instead using one inversor gate , you can also take the microcontroller osc out signal and apply to the modulator and use 4 inversors at the output to get some more power at the antenna.
Thanks!
Amazing work brother!
Thank you man!
Very nice video man !
Thank you man!!
wow!!! Amazing work
Thank you so much!!
Hi! Nice idea!
Looked something for spread spectrum transmission and found your channel
Little question: why is switching diodes used? If diode opens this leads 5V edge on delimiting capacitor and creates harmonics on output amps. Or this is wrong assumption?
Thank you! It creates a little distortion at the edge of the switching moment, but no concerns.. it works. Diodes are nice and simple RF switches 🤭🤭
@@AllElectronicsChannel thank you!
That copper tape / via construction is interesting. I mill my PCBs, and have occasionally drilled out an array of holes to do "via stitching", where I solder a wire through on both sides... but I think that tape with the bigger holes and no breaks in the ground plane might be better? Where can I find more about that construction technique?
For ghz frequency I think this is the best option for DIY. Search for S53MV and take a look on his projects
Nice, i liked the coupled transformer design, how did you measure the coupling coeffcient ?
Measured a single inductor and also the two coupled in series. That formula on the white board that I forgot to clear relates the inductances and K factor
You could also use SA612 with a crystal for the transmitter, I guess.
Yep!
@@AllElectronicsChannel Now we need a hardware receiver. I wonder if something like STM32 or ESP32 could be used to produce early/late/punctual sequences to avoid the need for FPGA.
Probably yes! We need to try it. The output of analog integrators could be read with the uC ADCs
@@AllElectronicsChannel Yep. I'm toying with such an idea too. To avoid the need for high-speed ADC and high-speed processing, perform de-spreading by analog multiplication, maybe using SA612 too.
Beautiful! We could downcovert RF using a polyphase anti-mage mixer, like the Tayloe www.pa3fwm.nl/technotes/tn17c.html.
Man... probably the same ATmega88 could work in an analog setup as this!!
Next video on OFDM .
Sir i am preparing for ap pg cet msc electronics. sir plz share me notes i don't have any notes only one month left for examination plz help me sir
Plz help me sir.
Share total notes for appgcet electronics entrance sir
Love from Pakistan.
Excelente proyecto, lástima la traba idiomática. Pero algo se comprende, el lenguaje técnico es universal. Esto es la base del CDMA? Si Data fuese una trama de un código? Saludos desde Córdoba Argentina
Yep! This is the base of CDMA, where each user has a different code assigned. The code phase is the position of the sequence in time domain
can i use max2608, diodes as switches and mmic amplifiler as bpsk transmitter?
Sure!