Patents by Inventor Roberto D. Chiesa

Roberto D. Chiesa 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).

  • Baseband predistortion system for the adaptive linearization of power amplifiers
    Patent number: 5524286
    Abstract: The invention relates to a baseband predistortion system for the adaptive linearization of power amplifiers and to a radiotransmitter using the predistortion system. It is based upon the updating of two error tables, one for the amplitude and one for the phase, whose content is used for correcting the baseband samples. The content of the tables is obtained by accumulating the difference, suitably weighed, between the sampling entering the predistortion device and the demodulated feedback value.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: June 4, 1996
    Assignee: Alcatel Italia S.p.A.
    Inventors: Roberto D. Chiesa, Alessandro Guido, Marco Stanzani