Patents by Inventor John T. Knudsen

John T. Knudsen 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).

  • Patent number: 5448621
    Abstract: In a cellular communication system where satellite nodes are moving with respect to the earth's surface, frequencies and time-slots are dynamically reallocated between cells in response to demand for services. When a particular cell is at or near its capacity because of a high demand for services, or is projected to be at or near capacity, spectral capacity is reallocated from nearby cells to meet the increase in demand. The reallocation in capacity is based on both real time cell loading data and historical cell loading information based on previous experiences.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: September 5, 1995
    Assignee: Motorola, Inc.
    Inventor: John T. Knudsen
  • Patent number: 4739518
    Abstract: A radio receiver circuit which suppresses an interfering signal exhibiting an amplitude significantly greater than that of a desired signal and a frequency nearly the same as that of the desired signal is disclosed. A received signal is applied to a gain controlled amplifier and a limiter. The limiter provides a limited signal which reduces amplitude and power of the desired signal relative to the interfering signal. The gain controlled amplifier provides a constant amplitude signal at an amplitude where the interfering signal portion of the constant amplitude signal equals an amplitude of the interfering signal portion of the limited signal. The constant amplitude and limited signals combine through a subtraction operation resulting in a significant attenuation of the interfering signal while causing only a small attenuation of the desired signal. Switching and decision circuitry are provided to selectively utilize the interference suppression.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: April 19, 1988
    Assignee: Motorola, Inc.
    Inventors: Robert H. Bickley, Christopher D. Broughton, John T. Knudsen