Patents by Inventor Rainer Stuhlberger

Rainer Stuhlberger 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).

  • Publication number: 20220113375
    Abstract: A method for testing at least one reception path in a radar receiver is provided. The reception path contains a mixer and a downstream signal processing circuit. The method includes injecting a test signal into the radar reception path so that at least a first test tone having a first test tone frequency in a passband of the downstream signal processing circuit and a second test tone having a second test tone frequency outside the passband are present on the radar reception path downstream of the mixer; and determining a characteristic of the radar reception path based on a first characteristic of a baseband signal at the first test tone frequency and a second characteristic of the baseband signal at the second test tone frequency.
    Type: Application
    Filed: December 23, 2021
    Publication date: April 14, 2022
    Applicant: Infineon Technologies AG
    Inventors: Alexander ONIC, Bernhard GSTOETTENBAUER, Thomas LANGSCHWERT, Jochen O. Schrattenecker, Rainer STUHLBERGER
  • Patent number: 11269055
    Abstract: A method for testing at least one reception path in a radar receiver is provided. The reception path contains a mixer and a downstream signal processing circuit. The method involves injecting a test signal into the reception path, so that at least a first test tone having a frequency in a passband of the signal processing circuit and a second test tone having a frequency outside the passband are present on the reception path downstream of the mixer. Further, the method involves tapping off a baseband signal, generated by the signal processing circuit, from the reception path, the baseband signal being based on the test signal.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 8, 2022
    Inventors: Alexander Onic, Bernhard Gstoettenbauer, Thomas Langschwert, Jochen O. Schrattenecker, Rainer Stuhlberger
  • Publication number: 20210391650
    Abstract: A circuit includes a radio frequency (RF) channel including an input node and an output node and being configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node; a mixer configured to mix an RF reference signal and an RF test signal representative of the RF output signal to generate a mixer output signal; an analog-to-digital converter configured to sample the mixer output signal in order to provide a sequence of sampled values; and a control circuit configured to provide a sequence of phase offsets by phase-shifting at least one of the RF test signal and the RF reference signal using one or more phase shifters, calculate a spectral value from the sequence of sampled values; and calculate estimated phase information indicating a phase of the RF output signal based on the spectral value.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 16, 2021
    Applicant: Infineon Technologies AG
    Inventors: Jochen O. Schrattenecker, Niels CHRISTOFFERS, Vincenzo FIORE, Bernhard GSTOETTENBAUER, Helmut KOLLMANN, Alexander MELZER, Alexander ONIC, Rainer STUHLBERGER, Mathias ZINNOECKER
  • Publication number: 20210382159
    Abstract: A radar method is described. According to one exemplary embodiment, the method includes generating a first RF oscillator signal in a first chip and supplying the first RF oscillator signal to a transmission (TX) channel of the first chip and transmitting the first RF oscillator signal from the TX channel of the first chip to the second chip via a transmission line.
    Type: Application
    Filed: August 16, 2021
    Publication date: December 9, 2021
    Applicant: Infineon Technologies AG
    Inventors: Florian STARZER, Helmut KOLLMANN, Alexander MELZER, Rainer STUHLBERGER, Roland VUKETICH, Mathias ZINNOECKER
  • Patent number: 11158944
    Abstract: A circuit is described herein. In accordance with one embodiment the circuit includes two or more RF channels, wherein each channel includes an input node, a phase shifter and an output node. Each channel is configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node. The circuit further includes an RF combiner circuit that is coupled with the outputs of the RF channels and configured to generate a combined signal representing a combination of the RF output signals, and a monitor circuit that includes a mixer and is configured to receive and down-convert the combined signal using an RF reference signal. Thus a mixer output signal is generated that depends on the phases of the RF output signals.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: October 26, 2021
    Inventors: Jochen O. Schrattenecker, Niels Christoffers, Vincenzo Fiore, Bernhard Gstoettenbauer, Helmut Kollmann, Alexander Melzer, Alexander Onic, Rainer Stuhlberger, Mathias Zinnoecker
  • Patent number: 11137489
    Abstract: A radar system includes a first chip having a first radio frequency (RF) contact; a second chip having a second RF contact; a first RF oscillator integrated in the first chip and has an output coupled to the first RF contact; a second RF oscillator integrated in the second chip; a transmission line connecting the first RF contact to the second RF contact; a demodulator that is arranged in the second chip and has a first RF input; wherein the first RF oscillator is configured to generate a first RF oscillator signal that is transmitted to the first RF input of the demodulator via the first RF contact, the transmission line, and the second RF contact, and wherein a controller is configured to determine a first propagation delay of the first RF oscillator signal arriving at the second chip on a basis of information obtained from the demodulator.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: October 5, 2021
    Inventors: Florian Starzer, Helmut Kollmann, Alexander Melzer, Rainer Stuhlberger, Roland Vuketich, Mathias Zinnoecker
  • Patent number: 11029388
    Abstract: A method is described that, according to one exemplary embodiment, involves the following: generating a first radio frequency (RF) signal by a first RF oscillator and a second RF signal by a second RF oscillator, mixing the first RF signal and the second RF signal by a mixer to generate a mixer output signal, digitizing the mixer output signal to generate a digitized signal, and calculating an estimate for a power spectral density of the mixer output signal from the digitized signal. Based on the estimate for the power spectral density of the mixer output signal, an estimate for a noise power spectral density characterizing the noise contained in the first and the second RF signals is calculated.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: June 8, 2021
    Inventors: Alexander Melzer, Michael Gerstmair, Mario Huemer, Alexander Onic, Christian Schmid, Rainer Stuhlberger
  • Patent number: 10969463
    Abstract: A method for processing radar data is described herein. In accordance with one embodiment, the method includes the calculation of a Range Map based on a digital radar signal received from a radar receiver. The Range Map includes spectral values for a plurality of discrete frequency values and a plurality of discrete time values, wherein each spectral value is represented by at least a first parameter. Further, the method includes applying an operation to at least the first parameters in the Range Map for at least one discrete frequency value to smooth or analyze at least a portion of the Range Map.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: April 6, 2021
    Assignee: Infineon Technologies AG
    Inventors: Alexander Melzer, Mario Huemer, Paul Meissner, Alexander Onic, Rainer Stuhlberger, Fisnik Sulejmani, Matthias Wagner
  • Publication number: 20200301001
    Abstract: A radar method is described. According to one exemplary embodiment, the method includes generating a first RF oscillator signal in a first chip and supplying the first RF oscillator signal to a transmission (TX) channel of the first chip and transmitting the first RF oscillator signal from the TX channel of the first chip to the second chip via a transmission line.
    Type: Application
    Filed: May 8, 2020
    Publication date: September 24, 2020
    Applicant: Infineon Technologies AG
    Inventors: Florian Starzer, Helmut KOLLMANN, Alexander MELZER, Rainer STUHLBERGER, Roland VUKETICH, Mathias ZINNOECKER
  • Patent number: 10763783
    Abstract: A method for a radar device is described. According to one example implementation, the method comprises generating an RF signal using a voltage-controlled oscillator (VCO), wherein the frequency of the RF signal depends on a first tuning voltage and a second tuning voltage. The method also comprises setting the second tuning voltage using a phase-locked loop coupled to the VCO, with the result that the frequency of the RF signal corresponds to a desired frequency. The first tuning voltage is changed in such a manner that the second tuning voltage set by the phase-locked loop corresponds approximately to a predefined value.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: September 1, 2020
    Assignee: Infineon Technologies AG
    Inventors: Lukas Heschl, Rainer Stuhlberger
  • Patent number: 10684363
    Abstract: A radar method is described. According to one exemplary embodiment, the method includes generating a first RF oscillator signal in a first chip and supplying the first RF oscillator signal to a transmission (TX) channel of the first chip and transmitting the first RF oscillator signal from the TX channel of the first chip to the second chip via a transmission line.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 16, 2020
    Assignee: Infineon Technologies AG
    Inventors: Florian Starzer, Helmut Kollmann, Alexander Melzer, Rainer Stuhlberger, Roland Vuketich, Mathias Zinnoecker
  • Patent number: 10670698
    Abstract: A method for estimating phase noise of an RF oscillator signal in a frequency-modulated continuous-wave (FMCW) radar system and related radar devices are provided. The method includes applying the RF oscillator signal to an artificial radar target composed of circuitry, which applies a delay and a gain to the RF oscillator signal, to generate an RF radar signal. Furthermore, the method includes down-converting the RF radar signal received from the artificial radar target from an RF frequency band to a base band, digitizing the down-converted RF radar signal to generate a digital radar signal, and calculating a decorrelated phase noise signal from the digital radar signal. A power spectral density of the decorrelated phase noise is then calculated from the decorrelated phase noise signal, and the power spectral density of the decorrelated phase noise is converted into a power spectral density of the phase noise of an RF oscillator signal.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: June 2, 2020
    Assignee: Infineon Technologies AG
    Inventors: Alexander Melzer, Mario Huemer, Alexander Onic, Florian Starzer, Rainer Stuhlberger
  • Patent number: 10663559
    Abstract: A method for cancelling phase noise in a radar signal is described herein. In accordance with one embodiment, the method includes transmitting an RF oscillator signal, which represents a local oscillator signal including phase noise, to a radar channel and receiving a respective first RF radar signal from the radar channel. The first RF radar signal included at least one radar echo of the transmitted RF oscillator signal. Further, the method includes applying the RF oscillator signal to an artificial radar target composed of circuitry, which applies a delay and a gain to the RF oscillator signal, to generate a second RF radar signal. The second RF radar signal is modulated by a modulation signal thus generating a frequency-shifted RF radar signal. Further, the method includes subtracting the frequency-shifted RF radar signal from the first RF radar signal.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: May 26, 2020
    Assignee: Infineon Technologies AG
    Inventors: Mario Huemer, Alexander Melzer, Alexander Onic, Rainer Stuhlberger
  • Patent number: 10574367
    Abstract: One exemplary embodiment of the present invention relates to a circuit that includes at least one RF signal path for an RF signal and at least one power sensor, which is coupled to the RF signal path and configured to generate a sensor signal representing the power of the RF signal during normal operation of the circuit. The circuit further includes a circuit node for receiving an RF test signal during calibration operation of the circuit. The circuit node is coupled to the at least one power sensor, so that the at least one power sensor receives the RF test signal additionally or alternatively to the RF signal and generates the sensor signal as representing the power of the RF test signal.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: February 25, 2020
    Assignee: Infineon Technologies AG
    Inventors: Karl Dominizi, Oliver Frank, Herbert Jaeger, Herbert Knapp, Hao Li, Florian Starzer, Rainer Stuhlberger, Jonas Kammerer
  • Publication number: 20200025899
    Abstract: A radar method is described. According to one exemplary embodiment, the method includes generating a first RF oscillator signal in a first chip and supplying the first RF oscillator signal to a transmission (TX) channel of the first chip and transmitting the first RF oscillator signal from the TX channel of the first chip to the second chip via a transmission line.
    Type: Application
    Filed: August 20, 2018
    Publication date: January 23, 2020
    Applicant: Infineon Technologies AG
    Inventors: Florian STARZER, Helmut KOLLMANN, Alexander MELZER, Rainer STUHLBERGER, Roland VUKETICH, Mathias ZINNOECKER
  • Publication number: 20190319582
    Abstract: A method for a radar device is described. According to one example implementation, the method comprises generating an RF signal using a voltage-controlled oscillator (VCO), wherein the frequency of the RF signal depends on a first tuning voltage and a second tuning voltage. The method also comprises setting the second tuning voltage using a phase-locked loop coupled to the VCO, with the result that the frequency of the RF signal corresponds to a desired frequency. The first tuning voltage is changed in such a manner that the second tuning voltage set by the phase-locked loop corresponds approximately to a predefined value.
    Type: Application
    Filed: April 8, 2019
    Publication date: October 17, 2019
    Inventors: Lukas HESCHL, Rainer Stuhlberger
  • Publication number: 20190271764
    Abstract: A method for testing at least one reception path in a radar receiver is provided. The reception path contains a mixer and a downstream signal processing circuit. The method involves injecting a test signal into the reception path, so that at least a first test tone having a frequency in a passband of the signal processing circuit and a second test tone having a frequency outside the passband are present on the reception path downstream of the mixer. Further, the method involves tapping off a baseband signal, generated by the signal processing circuit, from the reception path, the baseband signal being based on the test signal.
    Type: Application
    Filed: February 26, 2019
    Publication date: September 5, 2019
    Applicant: Infineon Technologies AG
    Inventors: Alexander ONIC, Bernhard GSTOETTENBAUER, Thomas LANGSCHWERT, Jochen O. Schrattenecker, Rainer STUHLBERGER
  • Patent number: 10371800
    Abstract: Exemplary embodiments disclosed herein relate to a radar device. The radar device may transmit an RF oscillator signal to a radar channel and receive a respective first RF radar signal from the radar channel. The radar device may further generate a second RF radar signal. Frequency conversion circuits are also disclosed to down-convert the first RF radar signal and the second RF radar signal. An analog-to digital conversion unit may digitize the down-converted first RF radar signal and the down-converted second RF radar signal to generate a first digital signal and a second digital signal, respectively. A digital signal processing unit is disclosed to estimate a phase noise signal included in the second digital signal and to generate a cancellation signal based on the estimated phase noise signal. The cancellation signal is subtracted from the first digital radar signal to obtain a noise compensated digital radar signal.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: August 6, 2019
    Assignee: Infineon Technologies AG
    Inventors: Mario Huemer, Alexander Melzer, Alexander Onic, Florian Starzer, Rainer Stuhlberger
  • Publication number: 20190235051
    Abstract: A method is described that, according to one exemplary embodiment, involves the following: generating a first radio frequency (RF) signal by a first RF oscillator and a second RF signal by a second RF oscillator, mixing the first RF signal and the second RF signal by a mixer to generate a mixer output signal, digitizing the mixer output signal to generate a digitized signal, and calculating an estimate for a power spectral density of the mixer output signal from the digitized signal. Based on the estimate for the power spectral density of the mixer output signal, an estimate for a noise power spectral density characterizing the noise contained in the first and the second RF signals is calculated.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 1, 2019
    Applicant: Infineon Technologies AG
    Inventors: Alexander MELZER, Michael GERSTMAIR, Mario HUEMER, Alexander ONIC, Christian SCHMID, Rainer STUHLBERGER
  • Publication number: 20190214724
    Abstract: A circuit is described herein. In accordance with one embodiment the circuit includes two or more RF channels, wherein each channel includes an input node, a phase shifter and an output node. Each channel is configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node. The circuit further includes an RF combiner circuit that is coupled with the outputs of the RF channels and configured to generate a combined signal representing a combination of the RF output signals, and a monitor circuit that includes a mixer and is configured to receive and down-convert the combined signal using an RF reference signal. Thus a mixer output signal is generated that depends on the phases of the RF output signals.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 11, 2019
    Applicant: Infineon Technologies AG
    Inventors: Jochen O. SCHRATTENECKER, Niels CHRISTOFFERS, Vincenzo FIORE, Bernhard GSTOETTENBAUER, Helmut KOLLMANN, Alexander MELZER, Alexander ONIC, Rainer STUHLBERGER, Mathias ZINNOECKER