Patents by Inventor Ronald G. Niemann

Ronald G. Niemann 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).

  • Discrete automatic gain control with high stability, high speed and low distortion
    Patent number: 5161170
    Abstract: High speed automatic gain control (AGC) circuitry, capable of use in pulse or CW systems, incorporates hysteresis for improving the stability and distortion characteristics of the AGC. After a gain setting is selected, the built-in hysteresis feature prevents an adjustment in that gain setting until the amplitude of the input signal varies more than a predetermined amount. Sampling of the amplitude of the input signal and gain adjustments are accomplished by digital circuitry. In one embodiment, AGC is on a pulse-to-pulse basis.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: November 3, 1992
    Assignee: The Johns Hopkins University
    Inventors: Paul H. Gilbert, Ronald G. Niemann, Robert L. Trapp