Patents by Inventor Thomas David Brogan

Thomas David Brogan 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).

  • Low voltage RF amplifier and mixed with single bias block and method
    Patent number: 6018270
    Abstract: A single bias block for a single or multiple low voltage RF circuits including one or more amplifiers and one or more single or double balanced mixers with compensation for temperature and integrated circuit process parameters. The power supply may be a lower voltage without sacrificing the dynamic range of the amplifier and/or mixer by applying full power supply voltage to the load with the bias applied to the base circuit through an operational amplifier and/or buffer circuit. For the mixer, a lower noise figure may also be realized by moving the gain control impedance from the emitter to the collector circuit. The circuits may be discrete components or part of an integrated circuit. Methods are disclosed for reducing the power supply voltage without affecting the dynamic range of an amplifier, for temperature and process parameter compensation, and for controlling the gain of a mixer without affecting input or output impedance.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: January 25, 2000
    Assignee: Intersil Corporation
    Inventors: Carlton Stuebing, Richard Douglas Schultz, Thomas David Brogan, Sang-Gig Lee
  • Low voltage RF amplifier and mixed with single bias block and method
    Patent number: 5809410
    Abstract: A single bias block for a single or multiple low voltage RF circuits including one or more amplifiers and one or more single or double balanced mixers with compensation for temperature and integrated circuit process parameters. The power supply may be a lower voltage without sacrificing the dynamic range of the amplifier and/or mixer by applying full power supply voltage to the load with the bias applied to the base circuit through an operational amplifier and/or buffer circuit. For the mixer, a lower noise figure may also be realized by moving the gain control impedance from the emitter to the collector circuit. The circuits may be discrete components or part of an integrated circuit. Methods are disclosed for reducing the power supply voltage without affecting the dynamic range of an amplifier, for temperature and process parameter compensation, and for controlling the gain of a mixer without affecting input or output impedance.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: September 15, 1998
    Assignee: Harris Corporation
    Inventors: Carlton Stuebing, Richard Douglas Schultz, Thomas David Brogan, Sang-Gug Lee