Patents by Inventor Daniel E. Stephens

Daniel E. Stephens 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).

  • Direct conversion receiver device with first and second stages and related methods
    Patent number: 9300336
    Abstract: A direct conversion receiver device may receive I and Q signals. The direct conversion receiver device may include a blind IQ balance circuit configured to balance the I and Q signals without a pilot signal, and a mixer coupled to the blind IQ balance circuit and configured to generate I and Q baseband signals using an operational frequency, the operational frequency being based upon bandwidth and modulation of the I and Q signals. The blind IQ balance circuit may include a first stage configured to generate an intermediate amplitude balanced Q signal based upon the I and Q signals, and a second stage coupled to the first stage and configured to generate phased balanced I and Q signals based upon the intermediate amplitude balanced Q signal and the I signal.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: March 29, 2016
    Assignee: HARRIS CORPORATION
    Inventors: Timothy Giles, William Nelson Furman, Nicholas Shields, Nathan T. Prosser, Richard Taylor, Daniel E. Stephens
  • Software defined radio for loading waveform components at runtime in a software communications architecture (SCA) framework
    Patent number: 7937076
    Abstract: A software defined radio includes a radio circuit and an executable radio software system operable with the radio circuit and conforming to the software communications architecture (SCA) specification. An operating environment is defined and includes a plurality of waveform components that are loaded when the radio circuit is initialized or a waveform component is instantiated, and reloaded at runtime after the waveform component is instantiated for transmitting and receiving voice data.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: May 3, 2011
    Assignee: Harris Corporation
    Inventors: Scott Zeller, Daniel E. Stephens, Michael E. Wilkerson-Barker
  • Power management system for SCA based software defined radio and related method
    Patent number: 7809410
    Abstract: A software defined radio includes a radio circuit powered by a battery and formed as a pair of radio subsystems having radio components that draw power from the battery. An executable radio software system conforms to the Software Communications Architecture (SCA) specification and defines an operating platform environment that allows a waveform application to operate with the radio circuit. A power management service is operative with the pair of radio subsystems to coordinate the power among the radio components.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: October 5, 2010
    Assignee: Harris Corporation
    Inventors: Lloyd Palum, Daniel E. Stephens, Scott Zeller
  • SOFTWARE DEFINED RADIO FOR LOADING WAVEFORM COMPONENTS AT RUNTIME IN A SOFTWARE COMMUNICATIONS ARCHITECTURE (SCA) FRAMEWORK
    Publication number: 20080220757
    Abstract: A software defined radio includes a radio circuit and an executable radio software system operable with the radio circuit and conforming to the software communications architecture (SCA) specification. An operating environment is defined and includes a plurality of waveform components that are loaded when the radio circuit is initialized or a waveform component is instantiated, and reloaded at runtime after the waveform component is instantiated for transmitting and receiving voice data.
    Type: Application
    Filed: March 7, 2007
    Publication date: September 11, 2008
    Applicant: HARRIS CORPORATION
    Inventors: Scott Zeller, Daniel E. Stephens, Michael E. Wilkerson-Barker