Patents by Inventor Casper Thije Rooijers

Casper Thije Rooijers 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).

  • Chopper amplifiers with low intermodulation distortion
    Patent number: 11973476
    Abstract: Chopper amplifiers with low intermodulation distortion (IMD) are provided. To compensate for IMD, at least one distortion compensation channel is included in parallel with chopper amplifier circuitry of a main signal channel. Additionally, output selection switches are included for selecting between the output of the main signal path and the distortional compensation channel(s) over time to maintain the output current continuous. Such IMD compensation can be realized by filling in missing current of the main signal channel using the distortion compensation channel(s), or by using channel outputs only when they have settled current.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: April 30, 2024
    Assignee: Technische Universiteit Delft
    Inventors: Casper Thije Rooijers, Johan H. Huijsing, Kofi A. A. Makinwa
  • CHOPPER AMPLIFIERS WITH LOW INTERMODULATION DISTORTION
    Publication number: 20220077829
    Abstract: Chopper amplifiers with low intermodulation distortion (IMD) are provided. To compensate for IMD, at least one distortion compensation channel is included in parallel with chopper amplifier circuitry of a main signal channel. Additionally, output selection switches are included for selecting between the output of the main signal path and the distortional compensation channel(s) over time to maintain the output current continuous. Such IMD compensation can be realized by filling in missing current of the main signal channel using the distortion compensation channel(s), or by using channel outputs only when they have settled current.
    Type: Application
    Filed: June 29, 2021
    Publication date: March 10, 2022
    Inventors: Casper Thije Rooijers, Johan H. Huijsing, Kofi A. A. Makinwa