Patents by Inventor Jason Jiangnan Chen

Jason Jiangnan Chen 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).

  • Method and system for minimizing overlap nulling in switched beams
    Patent number: 7272364
    Abstract: A wireless system, which minimizes nulls within the wireless system, while simultaneously providing diversity. A wireless system will now have increased capacity and coverage due to an enhanced signal to interference ratio in the areas of beam overlap. The system uses time or frequency offset on the signals input to an antenna to minimize interference in the regions of beam overlap. Additionally, polarization diversity can be introduced using Butler Matrices in conjunction with array elements to enhance the interference reduction.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: September 18, 2007
    Assignee: Motorola, Inc.
    Inventors: Colin Frank, Yuda Luz, Jason Jiangnan Chen, John Touvannas
  • Method and system for minimizing overlap nulling in switched beams
    Publication number: 20040127174
    Abstract: A wireless system, which minimizes nulls within the wireless system, while simultaneously providing diversity. A wireless system will now have increased capacity and coverage due to an enhanced signal to interference ratio in the areas of beam overlap. The system uses time or frequency offset on the signals input to an antenna to minimize interference in the regions of beam overlap. Additionally, polarization diversity can be introduced using Butler Matrices in conjunction with array elements to enhance the interference reduction.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 1, 2004
    Applicant: MOTOROLA, INC.
    Inventors: Colin Frank, Yuda Luz, Jason Jiangnan Chen, John Touvannas