Patents by Inventor Christian Grewing

Christian Grewing 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: 10505513
    Abstract: The invention relates to a filter circuit which, on the hardware level, prevents charge transfers caused by one or more currents in a frequency divider (200) from generating an interference signal that can cause a signal distortion at the output of a current-to-voltage converter (300) belonging to a filter circuit. This signal distortion would otherwise have to be removed by means of laborious post-processing of the signal. In this process, the voltage curve at the input of the frequency divider (200) or the current at the second output of the frequency divider (200) are employed so that, by means of a compensation circuit arrangement, it is possible to model a compensation signal that essentially compensates for an interference signal caused by the charge transfers. The invention also relates to an associated method.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 10, 2019
    Assignee: FORSCHUNGSZENTRUM JÜLICH GmbH
    Inventors: Christian Grewing, Markus Robens
  • Patent number: 10340937
    Abstract: The invention relates to a voltage amplifier (100, 300) that places defined ranges (12, 14) of an input voltage signal (10) in different relations in terms of the input voltage signal (10) at one or more operating points of an amplifier circuit (130). An appropriate division of the ranges (12, 14) of the input voltage signal (10) makes it possible to linearly amplify the appertaining ranges (12, 14). Such linearly amplified output signals (191, 192, 193, 194) can then be converted into digital signals (531), for example, by means of several analog-to-digital converters (510).
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: July 2, 2019
    Assignee: FORSCHUNGSZENTRUM JÜLICH GmbH
    Inventor: Christian Grewing
  • Patent number: 10284214
    Abstract: The invention relates to a filter circuit (200) comprising at least a first filter line (210). The first filter line (210) has a first input circuit (10), a first integration circuit (20) and a first output circuit (30). The first input circuit (10) is configured in such a way that, as a function of the value of the input signal, it converts an input signal into at least two distinguishable, first first-stage output signals and relays the first-stage output signals to the first integration circuit (20, 240) during a prescribed period of time. The first integration circuit (20) is configured to integrate the first first-stage output signals of the first input circuit (10) over the prescribed period of time and to generate a first integration signal (25). The first output circuit (25) is configured to compare the first integration signal (25) to a first output reference value and to generate a first second-stage output signal (35). The invention also relates to an appertaining filtering method.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: May 7, 2019
    Assignee: FORSCHUNGSZENTRUM JÜLICH GmbH
    Inventor: Christian Grewing
  • Publication number: 20180351567
    Abstract: The invention relates to a voltage amplifier (100, 300) that places defined ranges (12, 14) of an input voltage signal (10) in different relations in terms of the input voltage signal (10) at one or more operating points of an amplifier circuit (130). An appropriate division of the ranges (12, 14) of the input voltage signal (10) makes it possible to linearly amplify the appertaining ranges (12, 14). Such linearly amplified output signals (191, 192, 193, 194) can then be converted into digital signals (531), for example, by means of several analog-to-digital converters (510).
    Type: Application
    Filed: July 5, 2016
    Publication date: December 6, 2018
    Inventor: Christian Grewing
  • Publication number: 20180351566
    Abstract: The invention relates to a filter circuit (200) comprising at least a first filter line (210). The first filter line (210) has a first input circuit (10), a first integration circuit (20) and a first output circuit (30). The first input circuit (10) is configured in such a way that, as a function of the value of the input signal, it converts an input signal into at least two distinguishable, first first-stage output signals and relays the first-stage output signals to the first integration circuit (20, 240) during a prescribed period of time. The first integration circuit (20) is configured to integrate the first first-stage output signals of the first input circuit (10) over the prescribed period of time and to generate a first integration signal (25). The first output circuit (25) is configured to compare the first integration signal (25) to a first output reference value and to generate a first second-stage output signal (35). The invention also relates to an appertaining filtering method.
    Type: Application
    Filed: July 5, 2016
    Publication date: December 6, 2018
    Inventor: Christian Grewing
  • Publication number: 20180198435
    Abstract: The invention relates to a filter circuit which, on the hardware level, prevents charge transfers caused by one or more currents in a frequency divider (200) from generating an interference signal that can cause a signal distortion at the output of a current-to-voltage converter (300) belonging to a filter circuit. This signal distortion would otherwise have to be removed by means of laborious post-processing of the signal. In this process, the voltage curve at the input of the frequency divider (200) or the current at the second output of the frequency divider (200) are employed so that, by means of a compensation circuit arrangement, it is possible to model a compensation signal that essentially compensates for an interference signal caused by the charge transfers. The invention also relates to an associated method.
    Type: Application
    Filed: July 5, 2016
    Publication date: July 12, 2018
    Inventors: Christian Grewing, Markus Robens
  • Patent number: 9264095
    Abstract: Amplifier for an ultra-wideband (UWB) signal receiver having a signal input (15) for receiving an ultra-wideband signal which is sent by a transmitter (1) and which is transmitted in a sequence of transmission channels (K.sub.i) (which each have a particular frequency bandwidth) which has been agreed between the transmitter (1) and the receiver (4); a transistor (18) whose control connection is connected to the signal input (15); a resonant circuit (26, 30, 31) which is connected to the transistor (18) and whose resonant frequency can be set for the purpose of selecting the transmission channel (K.sub.i) in line with the agreed sequence of transmission channels; and having a signal output (29) for outputting the amplified ultra-wideband signal, the signal output being tapped off between the transistor (18) and the resonant circuit.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: February 16, 2016
    Assignee: Lantiq Beteiligungs-GmbH & Co. KG
    Inventors: Martin Friedrich, Christian Grewing, Giuseppe Li Puma, Christoph Sandner, Andreas Wiesbauer, Kay Winterberg, Stefan Van Waasen
  • Patent number: 9020073
    Abstract: One embodiment relates to a low intermediate frequency (IF) receiver. The low-IF receiver includes an analog front end that is configured to receive a modulated IQ data signal and provide an in-phase signal and a quadrature signal, where the in-phase signal is phase shifted by approximately 90° relative to the quadrature signal. The low-IF receiver further includes a digital processing block, and a single path that provides only one of the in-phase signal and the quadrature signal to the digital processing block. Other receivers and methods are also disclosed.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: April 28, 2015
    Assignee: Intel Mobile Communications GmbH
    Inventors: Stefan van Waasen, Christian Grewing, Michael Lewis
  • Publication number: 20140354365
    Abstract: A device for compensating temperature drift of a voltage controlled oscillator (VCO) is provided. The VCO has at least one varactor arranged for controlling an output frequency fOut of said VCO by applying a tuning voltage VTune and simultaneously applying a bias voltage VBias on a cathode and an anode of said at least one varactor, respectively. Said device comprises a monitoring circuit and a tuning circuit. Said monitoring circuit has an input arranged to receive said VTune and is arranged to monitor said VTune and further is arranged to activate said tuning circuit based on a value of said VTune, and said tuning circuit has an output connected to said anode and is arranged to output said VBias, wherein said tuning circuit further is arranged to tune said VCO by changing said VBias so as to compensate for a temperature drift of said VCO.
    Type: Application
    Filed: August 18, 2014
    Publication date: December 4, 2014
    Inventors: Peng Gao, Yongquan Chen, Bingxin Li, Christian Grewing
  • Patent number: 8437442
    Abstract: A method and apparatus for generating a carrier frequency signal is disclosed. The method includes generating a first frequency signal; injecting a modulation signal at a first point of the two-point modulation architecture; generating a second frequency signal from the modulation signal; introducing the second frequency signal by mixing the first frequency signal and the second frequency signal to generate a mixed frequency signal and outputting the carrier frequency signal selected from the mixed frequency signal.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: May 7, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Christian Grewing, Anders Jakobsson, Ola Pettersson, Anders Emericks, Bingxin Li
  • Patent number: 8428212
    Abstract: Techniques for frequency synthesis using upconversion PLL processes are described herein.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: April 23, 2013
    Assignee: Intel Mobile Communications GmbH
    Inventors: Christian Grewing, Stefan van Waasen
  • Patent number: 8405434
    Abstract: A Digital Calibration System for a Phase Locked Loop includes a Tuning Voltage Controller configured to set the tuning voltage to a value; a Phase Difference Quantizer configured to output a phase difference after comparing a phase of the reference signal with a phase of the feedback signal; a Digital Controller configured to receive the phase difference of the PDQ and control a coarse tuning signal such that an average phase difference of the PDQ is 0; and a Frequency Calibration Logic configured to calibrate the feedback signal in response to the output of the DC.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: March 26, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Anders Jakobsson, Christian Grewing, Anders Emericks, Ola Pettersson, Bingxin Li
  • Patent number: 8368479
    Abstract: A VCO device is described that has pre-compensation. Digitally switchable compensation capacitors are selectively activated to adjust operation of the VCO to mitigate undesirable operational effects. In some example embodiments, the digitally switchable compensation capacitors of the VCO are adjusted to compensate for the effects of activating (from a quiescent state) an output buffer driven by the VCO.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: February 5, 2013
    Assignee: Infineon Technologies AG
    Inventors: Christian Grewing, Stefan van Waasen, Anders Emericks
  • Patent number: 8222961
    Abstract: A method and a device for determining closed loop bandwidth characteristic of a Phase Locked Loop (PLL) (52) comprising a voltage controlled oscillator (VCO) (53) controlled by means of a tuning voltage (Vtune) is disclosed.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: July 17, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Christian Grewing, Anders Jakobsson, Ola Pettersson, Anders Emericks, Bingxin Li
  • Publication number: 20120082186
    Abstract: Amplifier for an ultra-wideband (UWB) signal receiver having a signal input (15) for receiving an ultra-wideband signal which is sent by a transmitter (1) and which is transmitted in a sequence of transmission channels (K.sub.i) (which each have a particular frequency bandwidth) which has been agreed between the transmitter (1) and the receiver (4); a transistor (18) whose control connection is connected to the signal input (15); a resonant circuit (26, 30, 31) which is connected to the transistor (18) and whose resonant frequency can be set for the purpose of selecting the transmission channel (K.sub.i) in line with the agreed sequence of transmission channels; and having a signal output (29) for outputting the amplified ultra-wideband signal, the signal output being tapped off between the transistor (18) and the resonant circuit.
    Type: Application
    Filed: December 13, 2011
    Publication date: April 5, 2012
    Applicant: Lantiq Deutschland GmbH
    Inventors: Martin Friedrich, Christian Grewing, Giuseppe Li Puma, Christoph Sandner, Andreas Wiesbauer, Kay Winterberg, Stefan Van Waasen
  • Patent number: 8094752
    Abstract: Amplifier for an ultra-wideband (UWB) signal receiver having a signal input (15) for receiving an ultra-wideband signal which is sent by a transmitter (1) and which is transmitted in a sequence of transmission channels (Ki) (which each have a particular frequency bandwidth) which has been agreed between the transmitter (1) and the receiver (4); a transistor (18) whose control connection is connected to the signal input (15); a resonant circuit (26, 30, 31) which is connected to the transistor (18) and whose resonant frequency can be set for the purpose of selecting the transmission channel (Ki) in line with the agreed sequence of transmission channels; and having a signal output (29) for outputting the amplified ultra-wideband signal, the signal output being tapped off between the transistor (18) and the resonant circuit.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: January 10, 2012
    Assignee: Lantiq Deutschland GmbH
    Inventors: Martin Friedrich, Christian Grewing, Giuseppe Li Puma, Christoph Sandner, Andreas Wiesbauer, Kay Winterberg, Stefan Van Waasen
  • Publication number: 20110298507
    Abstract: A Digital Calibration System for a Phase Locked Loop includes a Tuning Voltage Controller configured to set the tuning voltage to a value; a Phase Difference Quantizer configured to output a phase difference after comparing a phase of the reference signal with a phase of the feedback signal; a Digital Controller configured to receive the phase difference of the PDQ and control a coarse tuning signal such that an average phase difference of the PDQ is 0; and a Frequency Calibration Logic configured to calibrate the feedback signal in response to the output of the DC.
    Type: Application
    Filed: August 19, 2011
    Publication date: December 8, 2011
    Inventors: Anders JAKOBSSON, Christian Grewing, Anders Emericks, Ola Pettersson, Bingxin Li
  • Patent number: 8063508
    Abstract: A power control system is described that reuses current from segregated circuits of the mobile device. In some embodiments, the segregated circuits (or “sections”) can be “stacked” in series (with respect to the power supply) such that power is more efficiently used. The power can be more efficiently used by arranging a first section to reuse current that supplies power to a second section. A power control unit can be used to control regulators.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: November 22, 2011
    Assignee: Infineon Technologies AG
    Inventors: Christian Grewing, Stefan Heinrich van Waasen
  • Publication number: 20110187424
    Abstract: A method and a device for determining closed loop bandwidth characteristic of a Phase Locked Loop (PLL) (52) comprising a voltage controlled oscillator (VCO) (53) controlled by means of a tuning voltage (Vtune) is disclosed.
    Type: Application
    Filed: January 28, 2011
    Publication date: August 4, 2011
    Inventors: Christian GREWING, Anders Jakobsson, Ola Pettersson, Anders Emericks, Bingxin Li
  • Publication number: 20100329372
    Abstract: A method and apparatus for generating a carrier frequency signal is disclosed. The method includes generating a first frequency signal; injecting a modulation signal at a first point of the two-point modulation architecture; generating a second frequency signal from the modulation signal; introducing the second frequency signal by mixing the first frequency signal and the second frequency signal to generate a mixed frequency signal and outputting the carrier frequency signal selected from the mixed frequency signal.
    Type: Application
    Filed: June 21, 2010
    Publication date: December 30, 2010
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Christian Grewing, Anders Jakobsson, Ola Pettersson, Anders Emericks, Bingxin Li