Patents by Inventor Peter Stroet

Peter Stroet 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).

  • Linearized integrated FM demodulator using a plurality of cascaded all-pass filters or a bessel filter
    Patent number: 6137353
    Abstract: An approach for demodulating a frequency-modulated signal involves processing a frequency-modulated signal with a phase shifter network to provide a demodulated signal that has a relatively constant amplitude around the center frequency of the frequency-modulated signal and that exhibits a relatively linear phase change over an operational frequency range. Embodiments of the invention include a phase shifter network, using N number of cascaded all-pass filters, that receives as an input a limited amplitude signal and outputs a phase-shifted limited amplitude signal that is mixed with the limited amplitude signal. The phase shifter network may also comprise a low-pass bessel filter.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: October 24, 2000
    Assignee: Philips Electronics North America Corporation
    Inventors: Peter Stroet, Rishi Mohindra