Patents Represented by Attorney Johnson & Associates
  • Patent number: 6362606
    Abstract: An RF power amplifier is provided for use with wireless transmission systems such as cellular phones. An RF power amplifier includes direct drive amplifier circuitry operating in a push-pull scheme. The RF power amplifier includes a pair of switching devices driven by a pair of mutually coupled inductive devices. The inductive devices may be magnetically or capacitively coupled together. The RF power amplifier may be formed on a single integrated circuit and include an on-chip bypass capacitor. The RF power amplifier may utilize a voltage regulator for providing a regulated voltage source. The RF power amplifier may be provided using a dual oxide gate device resulting in an improved amplifier. The RF power amplifier may be packaged using flip chip technology and multi-layer ceramic chip carrier technology.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: March 26, 2002
    Assignee: Silicon Laboratories, INC
    Inventors: Timothy J. Dupuis, Susanne A. Paul