Patents by Inventor Keith J. Schrag

Keith J. Schrag 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).

  • Multi-frequency antenna assemblies with DC switching
    Patent number: 7587183
    Abstract: According to various exemplary embodiments, apparatus, systems, and methods are disclosed for use with antenna systems operable for receiving first and second signals having respective first and second frequencies. In one exemplary embodiment, a controller selectively controls whether an amplifier is electrically powered via a first receiver associated with the first frequency or a second receiver associated with the second frequency depending on whether the first receiver, second receiver, or both are present and activated.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: September 8, 2009
    Assignee: Laird Technologies, Inc.
    Inventors: Ayman Duzdar, Tan Dinh Quach, Keith J. Schrag
  • Multi-freqency antenna assemblies with DC switching
    Publication number: 20080146176
    Abstract: According to various exemplary embodiments, apparatus, systems, and methods are disclosed for use with antenna systems operable for receiving first and second signals having respective first and second frequencies. In one exemplary embodiment, a controller selectively controls whether an amplifier is electrically powered via a first receiver associated with the first frequency or a second receiver associated with the second frequency depending on whether the first receiver, second receiver, or both are present and activated.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 19, 2008
    Inventors: Ayman Duzdar, Tan Dinh Quach, Keith J. Schrag