Patents by Inventor Christopher Polczynski

Christopher Polczynski 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).

  • Front end interface circuit and method of tuning the same
    Patent number: 5910731
    Abstract: An automatic impedance matching front end interface circuit includes a processor and a plurality of variable resistors, the resistances of which are adjustable by the processor to achieve impedance matching such that the upstream and downstream signals flow in desired directions. A method of adjusting the resistances of the variable resistors includes measuring two voltages at different locations along a downstream transmission line, obtaining a measured voltage ratio, comparing the measured ratio to an optimal ratio, and adjusting the resistances of the variable resistors to cause the measured ratio to approach the optimal ratio.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: June 8, 1999
    Assignee: Alcatel USA Sourcing, L.P.
    Inventor: Christopher Polczynski