Patents by Inventor Bert G. Pihlstrom

Bert G. Pihlstrom 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).

  • Selectable single mode or differential mode operation in a single amplifier
    Patent number: 6819178
    Abstract: A dual mode amplifier having single ended and differential ended modes of operation using only one set of output pads or terminals. The dual mode amplifier has two differential amplifiers, connected by coupling circuitry, each differential amplifier receiving a pair of differential input signals and having one output terminal. By activating and deactivating the coupling circuitry, the differential amplifiers can operate in two modes using the one set of output terminals. In the singled ended mode, the differential amplifiers operate independently, each converting the differential input signals to a singled ended output signal at their respective output terminals. In the differential mode, the differential amplifiers operate together to provide a pair of differential output signals at the output terminals based upon the pair of input signals.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: November 16, 2004
    Assignee: Agilent Technologies, Inc.
    Inventors: Bert G. Pihlstrom, Ronnie E. Owens, Barbara J. Duffner, Michael Richter, Ulrich Knoch
  • Selectable single mode or diferential mode operation in a single amplifier
    Publication number: 20040070451
    Abstract: A dual mode amplifier having single ended and differential ended modes of operation using only one set of output pads or terminals. The dual mode amplifier has two differential amplifiers, connected by coupling circuitry, each differential amplifier receiving a pair of differential input signals and having one output terminal. By activating and deactivating the coupling circuitry, the differential amplifiers can operate in two modes using the one set of output terminals. In the singled ended mode, the differential amplifiers operate independently, each converting the differential input signals to a singled ended output signal at their respective output terminals. In the differential mode, the differential amplifiers operate together to provide a pair of differential output signals at the output terminals based upon the pair of input signals.
    Type: Application
    Filed: September 25, 2003
    Publication date: April 15, 2004
    Inventors: Bert G. Pihlstrom, Ronnie E. Owens, Barbara J. Duffner, Michael Richter, Ulrich Knoch
  • Selectable single mode or differential mode operation in a single amplifier
    Patent number: 6664851
    Abstract: A dual mode amplifier having single ended and differential ended modes of operation using only one set of output pads or terminals. The dual mode amplifier has two differential amplifiers, connected by coupling circuitry, each differential amplifier receiving a pair of differential input signals and having one output terminal. By activating and deactivating the coupling circuitry, the differential amplifiers can operate in two modes using the one set of output terminals. In the singled ended mode, the differential amplifiers operate independently, each converting the differential input signals to a singled ended output signal at their respective output terminals. In the differential mode, the differential amplifiers operate together to provide a pair of differential output signals at the output terminals based upon the pair of input signals.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: December 16, 2003
    Assignee: Agilent Technologies, Inc.
    Inventors: Bert G. Pihlstrom, Ronnie E. Owens, Barbara J. Duffner, Michael Richter, Ulrich Knoch