Patents by Inventor Lorenzo Cardini

Lorenzo Cardini 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).

  • System for set-up of transmitters in high capacity digital radio links
    Patent number: 5204881
    Abstract: The invention relates to a system for initializing transmitters in high capacity digital radio links, in which a digital signal with QAM (Quadrature Amplitude Modulation) modulation is transmitted over a radio frequency carrier wave. The initialization of the transmitter is accomplished by generating a plurality of sinusoidal signals (tones), adding those tones together to simulate a digital singal to be transmitted, sending the simulated digital signal through the transmitter, and adjusting the transmitter to compensate for the intermodulation odd order products developed as a result of the nonlinearity of the power amplifier in the transmitter.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: April 20, 1993
    Assignee: Telettra-S.p.A.
    Inventors: Lorenzo Cardini, GianCarlo Perego, Rocco Nobili