Patents by Inventor Graham Haddock

Graham Haddock 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).

  • Apparatus and methods for providing wireless communication to a sectorized coverage area
    Patent number: 5825762
    Abstract: A transmitter (300) is utilized to provide wireless communication in a sectorized coverage area. The transmitter (300) incorporates a hybrid matrix (303) and an inverse hybrid matrix (306) to combine input control signals (315) and traffic signals (316). The hybrid matrix (303) transforms the control signals (315) and traffic signals (316) into output signals which each contain a portion of the control signals (315) and traffic signals (316). The outputs from the hybrid matrix (303) are amplified by amplifiers (319), and the outputs from the amplifiers (319) are then inverse transformed by the inverse hybrid matrix (306). The inverse transform matrix (306) recombines the portions of the control signals (315) and traffic signals (316) originally input to the hybrid matrix (303), and the resulting signals are transmitted to mobile stations (203-205 and 208) in sectorized coverage areas (S1.sub.A and S1.sub.B) using sector antennas (320).
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: October 20, 1998
    Assignee: Motorola, Inc.
    Inventors: Ralph A. Kamin, Jr., Graham Haddock