Patents by Inventor Fran.cedilla.ois Jeanjean

Fran.cedilla.ois Jeanjean 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).

  • Differential output amplifier arrangement and method for tuning the output impedance of a differential output amplifier
    Patent number: 6097245
    Abstract: A differential output amplifier arrangement (DOA) including two operational amplifiers (OA1,OA2), each having a feedback resistor (R2,R20), and which are coupled by a first resistor (R1) between similar polarity type input terminals, further includes a pair of output resistors (R3,R30), coupled between respective output terminals (OUT1,OUT2), of each respective operational amplifier, and corresponding respective output terminals (ZOUT1,ZOUT2) of said arrangement, and a pair of resistors (R4,R40), each of which is cross-coupled between a respective output terminal of said arrangement (ZOUT1,ZOUT2) and one of the two similar polarity type, by the first resistor coupled, input terminals (INN2,INN1) of the respective cross-coupled operational amplifier. A method for adapting the output impedance of a differential output amplifier arrangement is described as well.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: August 1, 2000
    Assignee: Alcatel
    Inventors: Philippe Guillaume Dobbelaere, Rudi Verbist, Fran.cedilla.ois Jeanjean, Jean-Philippe Robert Adiel Cornil