Patents by Inventor Robert J. Kapuschinsky

Robert J. Kapuschinsky 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).

  • Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers
    Patent number: 7755421
    Abstract: An amplifier having DC offset compensation includes at least one input node and a pair of differential output nodes, a biasing circuit coupled to the input node; and a plurality of current sources.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: July 13, 2010
    Assignee: Agere Systems Inc.
    Inventors: Jinghong Chen, Gregory W. Sheets, Joseph Anidjar, Robert J. Kapuschinsky, Lane A. Smith
  • Methods and apparatus for programmable active inductance
    Patent number: 7656255
    Abstract: Methods and apparatus are provided for programmable active inductance. The disclosed active inductor devices provide a tunable bandwidth with improved linearity. The disclosed active inductors have a variable frequency response corresponding to a variable inductance of the active inductor. The active inductor comprises a variable resistive circuit having an effective resistance, wherein the variable resistive circuit is comprised of at least one resistor that can be selectively bypassed in the variable resistive circuit to vary the effective resistive. The active inductor has an inductance that can be varied by varying the effective resistance.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: February 2, 2010
    Assignee: Agere Systems Inc.
    Inventors: Christopher J. Abel, Robert J. Kapuschinsky, Gary D. Polhemus
  • ANALOG AMPLIFIER HAVING DC OFFSET CANCELLATION CIRCUIT AND METHOD OF OFFSET CANCELLATION FOR ANALOG AMPLIFIERS
    Publication number: 20090212856
    Abstract: An amplifier having DC offset compensation includes at least one input node and a pair of differential output nodes, a biasing circuit coupled to the input node; and a plurality of current sources.
    Type: Application
    Filed: May 8, 2009
    Publication date: August 27, 2009
    Applicant: AGERE SYSTEMS INC.
    Inventors: Jinghong Chen, Gregory W. Sheets, Joseph Anidjar, Robert J. Kapuschinsky, Lane A. Smith
  • Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers
    Patent number: 7532065
    Abstract: An amplifier having DC offset compensation includes at least one input node and a pair of differential output nodes, a biasing circuit coupled to the input node; and a plurality of current sources.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: May 12, 2009
    Assignee: Agere Systems Inc.
    Inventors: Jinghong Chen, Gregory W. Sheets, Joseph Anidjar, Robert J. Kapuschinsky, Lane A. Smith
  • METHODS AND APPARATUS FOR PROGRAMMABLE ACTIVE INDUCTANCE
    Publication number: 20080204171
    Abstract: Methods and apparatus are provided for programmable active inductance. The disclosed active inductor devices provide a tunable bandwidth with improved linearity. The disclosed active inductors have a variable frequency response corresponding to a variable inductance of the active inductor. The active inductor comprises a variable resistive circuit having an effective resistance, wherein the variable resistive circuit is comprised of at least one resistor that can be selectively bypassed in the variable resistive circuit to vary the effective resistive. The active inductor has an inductance that can be varied by varying the effective resistance.
    Type: Application
    Filed: February 28, 2007
    Publication date: August 28, 2008
    Inventors: Christopher J. Abel, Robert J. Kapuschinsky, Gary D. Polhemus