Patents by Inventor Abraham L. Craig

Abraham L. Craig 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: 8159390
    Abstract: A temporal nuller for removing or minimizing narrow band interference/jamming power from a global positioning system (GPS) receiver's input includes a first signal path having a first input and a first output, at least one time delay device and an adjustable phase shift device located within the first signal path, and a second signal path having a second input and a second output. The first signal input is connected to the second signal input, and the first signal output is connected to the second signal output. Further, the at least one time delay device is operative to introduce a time delay between a signal at an output of the at least one time delay device relative to a signal at an input of the at least one time delay device.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: April 17, 2012
    Assignee: Raytheon Company
    Inventors: William F. Dixon, Troy D. Fuchser, Abraham L. Craig
  • Publication number: 20100259437
    Abstract: A temporal nuller for removing or minimizing narrow band interference/jamming power from a global positioning system (GPS) receiver's input includes a first signal path having a first input and a first output, at least one time delay device and an adjustable phase shift device located within the first signal path, and a second signal path having a second input and a second output. The first signal input is connected to the second signal input, and the first signal output is connected to the second signal output. Further, the at least one time delay device is operative to introduce a time delay between a signal at an output of the at least one time delay device relative to a signal at an input of the at least one time delay device.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 14, 2010
    Applicant: RAYTHEON COMPANY
    Inventors: William F. Dixon, Troy D. Fuchser, Abraham L. Craig