Patents by Inventor Glenn Schedeen

Glenn Schedeen 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).

  • Using fractional delay computations to improve intermodulation performance
    Patent number: 9755583
    Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer TI; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets including a plurality of non-integer fractional steps; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: September 5, 2017
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Shavantha Kularatna, Christian Reichl, Bjoern Jelonnek, Alan Pereira, Glenn Schedeen, Sandeep Mehta
  • Using Fractional Delay Computations to Improve Intermodulation Performance
    Publication number: 20160254788
    Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer TI; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets including a plurality of non-integer fractional steps; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.
    Type: Application
    Filed: October 1, 2014
    Publication date: September 1, 2016
    Inventors: Shavantha KULARATNA, Christian REICHL, Bjoern JELONNEK, Alan PEREIRA, Glenn SCHEDEEN, Sandeep MEHTA
  • Using fractional delay computations to improve intermodulation performance
    Patent number: 9054652
    Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1?Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform, and combining the c
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: June 9, 2015
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Shavantha Kularatna, Christian Reichl, Bjoern Jelonnek, Glenn Schedeen, Sandeep Mehta
  • Using Fractional Delay Computations to Improve Intermodulation Performance
    Publication number: 20150091643
    Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1?Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform, and combining the c
    Type: Application
    Filed: October 2, 2013
    Publication date: April 2, 2015
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Shavantha Kularatna, Christian Reichl, Bjoern Jelonnek, Glenn Schedeen, Sandeep Mehta