Patents by Inventor Jan Crols

Jan Crols 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: 10389314
    Abstract: A digital power amplifier comprises: an integrated circuit (IC2); an adaption circuit of discrete components connected to first and second transmission output pins of an integrated circuit to adapt the output signal and feed a substantial sinusoidal output current with a transmission resonance frequency to an RFID antenna. IC2 comprises a digital control section with N wave-forming contacts to output a digital wave-forming bit combination of N bits with a clock frequency M-times the transmission resonance frequency; N driver blocks each connected with a first contact to one of the wave-forming contacts and N/2 of them connected with a second contact to the first transmission output pin and the other N/2 of them connected with their second contact to the second transmission output pin. The driver blocks provide increments of the substantial sinusoidal output current to the first and second transmission output pins.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: August 20, 2019
    Assignee: PANTHRONICS AG
    Inventors: Jan Crols, Steven Gabriels, Jakob Jongsma
  • Patent number: 9939476
    Abstract: Embodiments of the present invention may provide a method of measuring an unknown capacitance of a device. The method may comprise the steps of driving a test signal to a circuit system that includes a current divider formed by the device with unknown capacitance and a reference capacitor; mirroring a current developed in the reference capacitor to a second circuit system that includes a measurement impedance; measuring a voltage within the second circuit system; and deriving a capacitance of the unknown capacitance based on the measured voltage with reference to a capacitance of the reference capacitor and the measurement impedance.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 10, 2018
    Assignee: ANALOG DEVICES GLOBAL
    Inventors: Christian Steffen Birk, John A. Cleary, David Sayago Montilla, Elizabeth A. Lillis, Padraig O'Connor, Eoin E. English, Patrick Pratt, Kathleen Embrechts, Wim Rens, Jan Crols
  • Publication number: 20170089966
    Abstract: Embodiments of the present invention may provide a method of measuring an unknown capacitance of a device. The method may comprise the steps of driving a test signal to a circuit system that includes a current divider formed by the device with unknown capacitance and a reference capacitor; mirroring a current developed in the reference capacitor to a second circuit system that includes a measurement impedance; measuring a voltage within the second circuit system; and deriving a capacitance of the unknown capacitance based on the measured voltage with reference to a capacitance of the reference capacitor and the measurement impedance.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 30, 2017
    Applicant: ANALOG DEVICES GLOBAL
    Inventors: Christian Steffen Birk, John A. Cleary, David Sayago Montilla, Elizabeth A. Lillis, Padraig O'Connor, Eoin E. English, Patrick Pratt, Kathleen Embrechts, Wim Rens, Jan Crols