Weird. I was looking through the rfengineering subreddit last night, and someone had a cool thing they designed in this. I though I should look into it, and this morning there is this. Thanks!
I have LTSpice, QUCS, Elsie, and SimNEC all in my stable for filter work. There's a lot of overlap in functionality, but there's always something that one of them does better than another. The hardest part is getting proficient enough in all of them to make good choices about what to use when. I'd probably do better just to pick one and really become an expert in it.
YES! QUCS tutorials, YES! I use linux and using Wine to run Ltspice sucks. QUCS seems to be a good alternative to run some intermediate simulations that are too much to run on online simulators.
Great! I would like to learn nore about this simulator. Do you think I can use it to calculate the inductance of a PCB path? Given geometric parameters?
What tools do you recommend when you want to separately specify input and output impedance for your filter? I’ve come across many times now needing to design a LPF that also functions as a matching network at the same time. Do you know of any tools other than just doing it yourself in SPICE where you can specify complex input and output impedances while also a cutoff frequency, roll-off, etc? It seems like some sort of optimization tool would be needed for this to balance achieving the matching with the desired frequency response but I’m not aware of any tools that can do this
Most often when you do find filter calculators with different input and output impedance values, usually its just a real impedance; complex impedance brings the issue that the complex part isn't really constant - the real impedance you can keep fixed though. I would suggest to first try and compensate the imaginary part of your complex impedance, as much as possible in the frequency range of interest, and then try to calculate a real-only impedance filter. By combining the 2 elements some components might be eliminated - like 2 series or 2 parallel reactive elements. I'm not sure of the exact frequency range in which you need to work, but I did share some of the tools I found throughout the filter series.
@@FesZElectronicsthanks for getting back to me and good point! I’m working in the 11-14MHz range. The amplifier I work with has a complex source impedance which makes this all very tricky to operate over a 3MHz range and I still have not happened upon what I believe is the ideal solution. Thanks for all the great content
QUCS series ? Yes please !
Sure! Me too also!
Some tutorial videos would be great, QUCS is so extensive some vids could speed up the learning curve! Thanks for all your work, much appreciated.
i would very much appreciate a qucsstudio series!!!!
Weird. I was looking through the rfengineering subreddit last night, and someone had a cool thing they designed in this. I though I should look into it, and this morning there is this. Thanks!
Very impressive. Thanks for all the work and time you put into these videos.
I have LTSpice, QUCS, Elsie, and SimNEC all in my stable for filter work. There's a lot of overlap in functionality, but there's always something that one of them does better than another. The hardest part is getting proficient enough in all of them to make good choices about what to use when. I'd probably do better just to pick one and really become an expert in it.
This is also a big issue for me.. There is a lot of good software out there, but mastering any specific one takes a very long time...
This QUICS is a great find. Thanks for sharing.
QUCS series for the win!
Thank you for having my favorite sim tool. I think QucsStudio is the most advanced iteration of the Qucs family. Sadly no open source.
another excellent presentation - many thanks 👌
Thanks for the new tool!🙂
Series yes please
YES! QUCS tutorials, YES! I use linux and using Wine to run Ltspice sucks. QUCS seems to be a good alternative to run some intermediate simulations that are too much to run on online simulators.
QUCS studio series please, pretty please 😊
Just played a bit with qucs-s, is there any posibility to get phase vs frequency bode type plot as well?
Great! I would like to learn nore about this simulator. Do you think I can use it to calculate the inductance of a PCB path? Given geometric parameters?
Have you SimNEC? Feel like it would be a big help in your videos whenever you have to match some impedances.
Obviously "have you seen" is what I meant to say.
What tools do you recommend when you want to separately specify input and output impedance for your filter? I’ve come across many times now needing to design a LPF that also functions as a matching network at the same time. Do you know of any tools other than just doing it yourself in SPICE where you can specify complex input and output impedances while also a cutoff frequency, roll-off, etc? It seems like some sort of optimization tool would be needed for this to balance achieving the matching with the desired frequency response but I’m not aware of any tools that can do this
Most often when you do find filter calculators with different input and output impedance values, usually its just a real impedance; complex impedance brings the issue that the complex part isn't really constant - the real impedance you can keep fixed though. I would suggest to first try and compensate the imaginary part of your complex impedance, as much as possible in the frequency range of interest, and then try to calculate a real-only impedance filter. By combining the 2 elements some components might be eliminated - like 2 series or 2 parallel reactive elements. I'm not sure of the exact frequency range in which you need to work, but I did share some of the tools I found throughout the filter series.
@@FesZElectronicsthanks for getting back to me and good point! I’m working in the 11-14MHz range. The amplifier I work with has a complex source impedance which makes this all very tricky to operate over a 3MHz range and I still have not happened upon what I believe is the ideal solution. Thanks for all the great content
Qucs development is freezed, there is a well updated fork: "Qucs-S"
What is the frequency range of that tool?
I'm not sure there is a limitation. All the circuit calculations should be possible to be scaled.
Can you please do a video on a close loop buck converter in lt spice with both CCM and dcm also in an analog loop. A series will be interesting😅
Hi new sub, im interested on how isolate batteries, lithium or cellphone-chargers, to avoid us from static charges or magnetic fields from. Thanks!