Patents by Inventor Norman D. Grant

Norman D. Grant 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).

  • In-phase and quadrature sampling circuit
    Patent number: 5621345
    Abstract: A circuit that provides samples of in-phase and quadrature components of an input waveform includes an oversampling ADC that receives the input waveform and converts the input waveform to digital samples at an oversampling rate. A first digital filter, coupled to the ADC, receives the digital samples from the ADC and provides the in-phase component samples of the input waveform. A second digital filter, coupled to the ADC, receives the digital samples from the ADC and provides the quadrature component samples of the input waveform.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: April 15, 1997
    Assignee: Analog Devices, Inc.
    Inventors: Wai L. Lee, Norman D. Grant, Paul F. Ferguson, Jr.