Patents by Inventor Luigi Sforzini

Luigi Sforzini has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fully differential CMOS power amplifier
    Patent number: 5281924
    Abstract: A fully differential CMOS power amplifier having a folded-cascode input stage, an AB class output stage, a first common mode feedback circuit that stabilizes the input stage, and a second common mode feedback circuit that stabilizes the output stage. Each feedback circuit feeds back to an internal node of its particular stage. The power amplifier also includes a power dissipation reduction circuit that shuts down the power amplifier's output first and then the rest of the power amplifier, when the power amplifier is idle for a certain period. This reduction circuit activates the power amplifier in the reverse order.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: January 25, 1994
    Assignee: Italtel Societa Italiana Telecomunicazione S.p.A.
    Inventors: Franco Maloberti, Giuseppe Palmisano, Luigi Sforzini, Giuseppe Gazzoli