NQ21HT449
Newbie level 6
Hello All, I've been trying to do real simulation with QucsStudio, but it might be in vain.
I've simulated a mixer using the examples they've provided. However, everything breaks when I start to sweep over frequency. First image shows how I successfully simulate sweep first frequency source from 5 MHz to 40 MHz (0.5V amplitude is expected) and 2000 MHz source is fixed.
However, when I change RF_FRQ2 to lower value, it breaks RF_FRQ by setting all, but 4 of its values to 0V. This breaks my entire simulation.
How does it make sense? If I was to remove sweeping and fix values for RF_FRQ and RF_FRQ2, simulation starts to make sense, but if I can't simulate frequency response, I don't see how this tool is useful.
Is QucsStudio full of bugs so I should use Excel to do my simulation or is there a solution?
I've simulated a mixer using the examples they've provided. However, everything breaks when I start to sweep over frequency. First image shows how I successfully simulate sweep first frequency source from 5 MHz to 40 MHz (0.5V amplitude is expected) and 2000 MHz source is fixed.
However, when I change RF_FRQ2 to lower value, it breaks RF_FRQ by setting all, but 4 of its values to 0V. This breaks my entire simulation.
How does it make sense? If I was to remove sweeping and fix values for RF_FRQ and RF_FRQ2, simulation starts to make sense, but if I can't simulate frequency response, I don't see how this tool is useful.
Is QucsStudio full of bugs so I should use Excel to do my simulation or is there a solution?
Last edited:
