Patents by Inventor Norm Filiol

Norm Filiol 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).

  • Complex phase-locked loop demodulator for low-IF and zero-IF radio receivers
    Patent number: 7079598
    Abstract: A digital demodulator which coherently demodulates a low-IF or zero-IF complex signal using a complex-valued phase-locked loop (CPPL). The CPPL includes a numerical controlled oscillator, four multipliers and two combiners to provide independent phase/frequency and amplitude outputs. The CPLL exhibits in first order PLL dynamics without a loop filter in the feedback loop to the NCO. However a filter with one or more poles may be included in the feedback circuit to exhibit 2nd or higher order PLL dynamics. The CPLL allows coherent demodulation of extremely low FM modulation indexes whereby the incoming frequency drift may be larger than the frequency deviation. It can also be used to coherently demodulate signals which have combined amplitude and phase characteristics.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: July 18, 2006
    Assignee: Skyworks Solutions, Inc.
    Inventors: Neil Birkett, Norm Filiol, Thomas Riley
  • Complex phase-locked loop demodulator for low-IF and zero-IF radio receivers
    Publication number: 20040247050
    Abstract: A digital demodulator which coherently demodulates a low-IF or zero-IF complex signal using a complex-valued phase-locked loop (CPPL). The CPPL includes a numerical controlled oscillator, four multipliers and two combiners to provide independent phase/frequency and amplitude outputs. The CPLL exhibits in first order PLL dynamics without a loop filter in the feedback loop to the NCO. However a filter with one or more poles may be included in the feedback circuit to exhibit 2nd or higher order PLL dynamics. The CPLL allows coherent demodulation of extremely low FM modulation indexes whereby the incoming frequency drift may be larger than the frequency deviation. It can also be used to coherently demodulate signals which have combined amplitude and phase characteristics.
    Type: Application
    Filed: July 15, 2004
    Publication date: December 9, 2004
    Inventors: Neil Birkett, Norm Filiol, Thomas Riley
  • Complex phase-locked loop demodulator for low-IF and zero-IF radio receivers
    Patent number: 6785346
    Abstract: A digital demodulator which coherently demodulates a low-IF or zero-IF complex signal using a complex-valued phase-locked loop (CPPL). The CPPL includes a numerical controlled oscillator, four multipliers and two combiners to provide independent phase/frequency and amplitude outputs. The CPLL exhibits in first order PLL dynamics without a loop filter in the feedback loop to the NCO. However a filter with one or more poles may be included in the feedback circuit to exhibit 2nd or higher order PLL dynamics. The CPLL allows coherent demodulation of extremely low FM modulation indexes whereby the incoming frequency drift may be larger than the frequency deviation. It can also be used to coherently demodulate signals which have combined amplitude and phase characteristics.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: August 31, 2004
    Assignee: Skyworks Solutions, Inc.
    Inventors: Neil Birkett, Norm Filiol, Thomas Riley