Active Filters

Votes: 0
Views: 4672

Active RC Electronic Biquad/Universal Self Compensated Filters

2° order, 3 base-stages biquad/universal continuous time analog active filters type resonant and, more particulary, active full self-compensation techniques to improve the frequency range, the stability and/or the selectivity of the filters themselves with a very low, or as if zero, cost. These active filters techniques are the only ones that can (fully) erase the parasitic poles using a single resistor or an additional operational amplifier which has a functionally filtering output. This patent extends to Italy(priority ITMI20031566 A1).
Results of the sensitivity study are enclosed among the pictures.

The Patents are available on the following (esp@cenet database) page:


Voting is closed!


  • Name:
    Roberto Cavazzoni
  • Type of entry:
  • Profession:
    Inventor and electronic consultant
  • Number of times previously entering contest:
  • Roberto's favorite design and analysis tools:
    Orcad Pspice
  • For managing CAD data Roberto's company uses:
  • Roberto's hobbies and activities:
    Reparing Devices and I wrote and published a Book
  • Roberto belongs to these online communities:,, BeeQuu
  • Roberto is inspired by:
    The Inspiration to Improve the World
  • Software used for this entry:
    Pspice Simulator
  • Patent status: