Patents by Inventor Robin D. Culver

Robin D. Culver 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).

  • Adaptively stabilized RF amplifier
    Patent number: 4673886
    Abstract: An output transistor of an RF power amplifier remains stable so that it does not generate subharmonic spurious outputs. An adaptive stabilization network maintains the stability of the output by decreasing the impedance presented to the output transistor when voltage levels at the output transistor exceed a predetermined level. A combination consisting of a peak detector coupled to a Zener diode senses the predetermined level. A PIN diode couples to the Zener diode and to the output transistor so that the PIN diode becomes forward biased when the predetermined level is exceeded.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: June 16, 1987
    Assignee: Motorola, Inc.
    Inventors: Robert H. Bickley, Robin D. Culver