Patents Assigned to Marylabd Semiconductor, Inc.
  • Automatic wideband quadrature frequency generator
    Patent number: 6812763
    Abstract: When two sine-wave signals in quadrature, the integral of the output is equal to zero. Conversely, when an in-phase signal is inputted as one multiplicand and the output is set to zero, a quadrature signal is derived from the second multiplicand automatically. Any analog multiplier can be used. Examples using differential pair and conductance multiplier have been demonstrated. The multiplier operates over a wideband, and the in phase and quadrature signals can be equalized automatically.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: November 2, 2004
    Assignee: Marylabd Semiconductor, Inc.
    Inventors: Hung C. Lin, Chiang H. Yeh