Patents by Inventor Kurt L. Seastrand, Jr.

Kurt L. Seastrand, Jr. 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).

  • Space diversity receiver with combined step and continuous phase control
    Patent number: 4160952
    Abstract: Prior art circuits used in space diversity systems for combining the two received signals employ either continuously variable phase shifters, which have return-to-zero problems, or 90 degree phase steppers which combine the signals to within .+-.45 degrees. Both of these limitations are avoided by the use of the combination of a continuously variable phase shifter (14) and a 90 degree phase stepper (13). Control means (19, 20) are provided for actuating the stepper when the phase shift introduced by the variable phase shifter reaches a prescribed limit.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: July 10, 1979
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Kurt L. Seastrand, Jr.