Patents Assigned to Shinji Yamashita
  • Double-stage phase-diversity receiver
    Patent number: 5146359
    Abstract: A double-stage phase-diversity receiver divides one signal into a plurality of signals. These divided signals are mixed with first-stage local oscillation signals having predetermined phase relations to thereby provide a plurality of electrical baseband signals. These electrical signals are up-converted by using second-stage local oscillation signals having a predetermined phase relation. The up-converted IF signals are added, and are then demodulated by a heterodyne scheme.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: September 8, 1992
    Assignees: The Furukawa Electric Co., Ltd., Takanori Okoshi, Shinji Yamashita
    Inventors: Takanori Okoshi, Shinji Yamashita