Patents by Inventor David F. Sorrels

David F. Sorrels 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).

  • SYSTEMS AND METHODS OF RF POWER TRANSMISSION, MODULATION, AND AMPLIFICATION
    Publication number: 20150071383
    Abstract: An apparatus, system, and method are provided for energy conversion. For example, the apparatus can include a trans-impedance node, a reactive element, and a trans-impedance circuit. The reactive element can be configured to transfer energy to the trans-impedance node. The trans-impedance circuit can be configured to receive one or more control signals and to dynamically adjust an impedance of the trans-impedance node. The trans-impedance node, as a result, can operate as an RF power switching supply based on the one or more control signals.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Applicant: ParkerVision, Inc.
    Inventors: Gregory S. RAWLINS, David F. Sorrels
  • DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
    Patent number: 7539474
    Abstract: Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnetic (EM) signal is also described herein. Down-converting a signal and improving receiver dynamic range is also described herein.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: May 26, 2009
    Assignee: ParkerVision, Inc.
    Inventors: David F. Sorrels, Michael J. Bultman, Robert W. Cook, Jonathan S. Jensen, Martin R. Johnson, Richard C. Looke, Charley D Moses, Jr., Gregory S. Rawlins, Michael W. Rawlins, Robert T. Short, Jamison L. Young