Patents Represented by Attorney Mansour G. Ghomeshi
  • Patent number: 5309480
    Abstract: Briefly, according to the invention, a receiver (100) for receiving a carrier signal MSK (minimum shift keying) modulated with a bit stream of a digital information signal (302) is disclosed. The receiver (100) comprises a quadrature demodulator (128) for providing baseband quadrature demodulated signals (306 and 308). The quadrature demodulated (128) is coupled to an EXOR (126) for providing a decoded bit stream of the digital information signal (312) thereby avoiding complex decoder circuits. The quadrature demodulator (128) includes a pair of mixers (106 and 108) for quadrature mixing the received carrier signal and a pair of filters (114 and 118) for filtering the outputs of the mixers (106 and 108). The filters (114 and 118) are coupled to a pair of limiters (116 and 120) for limiting the filtered signals.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: May 3, 1994
    Assignee: Motorola, Inc.
    Inventors: Clinton C. Powell, II, Joseph Boccuzzi