Patents by Inventor Phillip J. Mages

Phillip J. Mages 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).

  • Dual current mirror power amplifier bias control
    Patent number: 6614300
    Abstract: A mobile station (10) is constructed to include transmitter circuitry (20) and an antenna (24) for transmitting a signal. The transmitter circuitry includes a multistage power amplifier (1) having a first power amplifier stage (1A) with an output coupled to an input of a second power amplifier stage (1B). The output of the second power amplifier stage is coupled to the antenna. The transmitter circuitry further includes a source of variable bias current (3) that is input to the second power amplifier stage for controlling the gain thereof, a source of fixed bias current (3C), and a summing junction (3E) for summing the fixed bias current and the variable bias current for input to the first power amplifier stage for controlling the gain thereof. The gain of the first power amplifier stage is controlled such that a minimum desired gain of the second power amplifier stage is achieved without inducing a collapse in the gain of the first power amplifier stage.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: September 2, 2003
    Assignee: Nokia Corporation
    Inventor: Phillip J. Mages
  • Dual current mirror power amplifier bias control
    Publication number: 20030038676
    Abstract: A mobile station (10) is constructed to include transmitter circuitry (20) and an antenna (24) for transmitting a signal. The transmitter circuitry includes a multistage power amplifier (1) having a first power amplifier stage (1A) with an output coupled to an input of a second power amplifier stage (1B). The output of the second power amplifier stage is coupled to the antenna. The transmitter circuitry further includes a source of variable bias current (3) that is input to the second power amplifier stage for controlling the gain thereof, a source of fixed bias current (3C), and a summing junction (3E) for summing the fixed bias current and the variable bias current for input to the first power amplifier stage for controlling the gain thereof. The gain of the first power amplifier stage is controlled such that a minimum desired gain of the second power amplifier stage is achieved without inducing a collapse in the gain of the first power amplifier stage.
    Type: Application
    Filed: August 27, 2001
    Publication date: February 27, 2003
    Inventor: Phillip J. Mages