Patents by Inventor Brian Jadus

Brian Jadus 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).

  • Patent number: 7860189
    Abstract: Disclosed are hybrid heterodyne transmitters and receivers for use in communications systems, or other systems, and the corresponding methods for hybrid heterodyne transmitting and receiving. A heterodyne receiver for converting a continuous time modulated signal to a discrete time digital baseband signal includes a sigma-delta modulator. The sigma-delta modulator is a sigma-delta analog-to-digital converter constructed and arranged to receive a modulated signal at an RF carrier frequency and provide a quantized output at a first intermediate frequency. The heterodyne receiver may also include a digital mixer constructed and arranged to receive a data stream quantized by the sigma-delta analog-to-digital converter and receive a signal at a second mixing frequency. The digital mixer then provides digital signals representative of a baseband signal suitable for digital signal processing.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: December 28, 2010
    Assignee: Intrinsix Corporation
    Inventors: Eugene M. Petilli, Brian Jadus, Clyde Washburn, John M. Alvermann
  • Patent number: 7576671
    Abstract: A sigma delta modulator (SDM) data converter system is provided. The SDM data converter system comprises a signal path, a feedback signal path, and a multi-bit quantizer disposed in a feedforward path. The signal path receives an input signal to be processed. The feedback signal path provides a feedback signal that is subtracted from the input signal. The multi-bit quantizer is disposed in the feedforward path so as to receive the input signal after the feedback signal has been subtracted from it. Te multi-bit quantizer uses feedforward dynamic element matching (DEM) to spectrally shape mismatch errors in the SDM data conversion system and produce an output signal, wherein the output signal of the multi-bit quantizer is used for at least a portion of the feedback signal.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: August 18, 2009
    Assignee: Intrinsix Corporation
    Inventors: Eugene M. Petilli, Mucahit Kozak, Brian Jadus
  • Publication number: 20070241950
    Abstract: A sigma delta modulator (SDM) data converter system is provided. The SDM data converter system comprises a signal path, a feedback signal path, and a multi-bit quantizer disposed in a feedforward path. The signal path receives an input signal to be processed. The feedback signal path provides a feedback signal that is subtracted from the input signal. The multi-bit quantizer is disposed in the feedforward path so as to receive the input signal after the feedback signal has been subtracted from it. Te multi-bit quantizer uses feedforward dynamic element matching (DEM) to spectrally shape mismatch errors in the SDM data conversion system and produce an output signal, wherein the output signal of the multi-bit quantizer is used for at least a portion of the feedback signal.
    Type: Application
    Filed: February 27, 2007
    Publication date: October 18, 2007
    Inventors: Eugene Petilli, Mucahit Kozak, Brian Jadus
  • Publication number: 20060111074
    Abstract: Disclosed are hybrid heterodyne transmitters and receivers for use in communications systems, or other systems, and the corresponding methods for hybrid heterodyne transmitting and receiving. A heterodyne receiver for converting a continuous time modulated signal to a discrete time digital baseband signal includes a sigma-delta modulator. The sigma-delta modulator is a sigma-delta analog-to-digital converter constructed and arranged to receive a modulated signal at an RF carrier frequency and provide a quantized output at a first intermediate frequency. The heterodyne receiver may also include a digital mixer constructed and arranged to receive a data stream quantized by the sigma-delta analog-to-digital converter and receive a signal at a second mixing frequency. The digital mixer then provides digital signals representative of a baseband signal suitable for digital signal processing.
    Type: Application
    Filed: August 19, 2005
    Publication date: May 25, 2006
    Inventors: Eugene Petilli, Brian Jadus, Clyde Washburn, John Alvermann