Patents by Inventor Joost Maarten Zitzmann

Joost Maarten Zitzmann 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).

  • Optical receiver circuit
    Patent number: 7394994
    Abstract: An optical receiver circuit comprising an optical converter circuit (38), comprising a photodiode and converting optical power into electrical power, a sensor circuit for deriving a control voltage VCONTR as a characteristic value of the electrical power output by the optical converter circuit (38); and an attenuator circuit (44) having a variable attenuation, the attenuation being controlled by the characteristic value of the electrical power output by the sensor circuit so as to obtain a constant output signal level of the optical receiver circuit. An output circuit is also provided and comprises a matching network (46), an amplifier stage (48) and an output transformer (50).
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: July 1, 2008
    Assignee: NXP B.V.
    Inventors: Joost Maarten Zitzmann, Freek Egbert Van Straten