Patents by Inventor Alexander Melzer

Alexander Melzer 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: 20220236375
    Abstract: In some implementations, a radar device comprises: a clock input configured to receive a clock signal, a local oscillator configured to generate a first RF local oscillator signal based on the clock signal, and also an RF input configured to receive a second RF local oscillator signal. The radar device further comprises a phase shifter configured to shift the phase of the first RF local oscillator signal or of the second RF local oscillator signal by a settable phase value. A monitor circuit is configured to combine the first RF local oscillator signal and the second RF local oscillator signal and to generate a sequence of signal values based on the combined signal. A computing unit is configured to determine the relative phase of the second RF local oscillator signal in relation to the first RF local oscillator signal based on the sequence of signal values.
    Type: Application
    Filed: January 25, 2022
    Publication date: July 28, 2022
    Inventors: Francesco LOMBARDO, Alexander MELZER
  • Patent number: 11366199
    Abstract: A method for a radar system is described. In accordance with one example implementation, the method comprises generating a frequency-modulated RF oscillator signal and feeding the RF oscillator signal to a first transmitting channel and a second transmitting channel. The method further comprises generating a first RF transmission signal in the first transmitting channel based on the RF oscillator signal, emitting the first RF transmission signal via a first transmitting antenna, receiving a first RF radar signal via a receiving antenna, and converting the first RF radar signal to a baseband, as a result of which a first baseband signal is obtained, which has a first signal component having a first frequency and a first phase, where the first signal component is assignable to direct crosstalk from the first transmitting antenna. This procedure is repeated for the second transmitting channel.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: June 21, 2022
    Assignee: Infineon Technologies AG
    Inventors: Oliver Lang, Michael Gerstmair, Alexander Melzer, Alexander Onic, Christian Schmid
  • Publication number: 20220155410
    Abstract: A radar system includes a first integrated radar circuit having a plurality of first transmission paths and a local oscillator configured to generate a local oscillator signal. The first integrated radar circuit has a first terminal configured to output an oscillation signal based on the local oscillator signal. The radar system includes a second integrated radar circuit having a second transmission path and a second terminal. The radar system includes a partially reflective element coupled to the first terminal via a first line section and to the second terminal via a second line section. The partially reflective element is configured to reflect back a first portion of the oscillation signal as a reflected signal via the first line section to the first terminal and to pass on a second portion of the oscillation signal as a forward signal via the second line section to the second terminal.
    Type: Application
    Filed: February 3, 2022
    Publication date: May 19, 2022
    Applicant: Infineon Technologies AG
    Inventors: Philipp SCHMIDT, Alexander MELZER, Andreas OCH
  • Publication number: 20220107385
    Abstract: A radio frequency (RF) circuit includes an input terminal configured to receive a reception signal from an antenna; an output terminal configured to output a digital output signal; a receive path including a mixer and an analog-to-digital converter (ADC), wherein the receive path is coupled to and between the input and output terminals, wherein the receive path includes an analog portion and a digital portion, and wherein the ADC generates a digital signal based on an analog signal received from the analog portion; a test signal generator configured to generate an analog test signal injected into the analog portion of the receive path; and a digital processor configured to receive a digital test signal from the digital portion, the digital test signal being derived from the analog test signal, analyze a frequency spectrum of the digital test signal, and determine a quality of the digital test signal.
    Type: Application
    Filed: October 2, 2020
    Publication date: April 7, 2022
    Applicant: Infineon Technologies AG
    Inventors: Alexander MELZER, Francesco LOMBARDO
  • Patent number: 11269050
    Abstract: A radar system includes a first integrated radar circuit having a plurality of first transmission paths and a local oscillator configured to generate a local oscillator signal. The first integrated radar circuit has a first terminal configured to output an oscillation signal based on the local oscillator signal. The radar system includes a second integrated radar circuit having a second transmission path and a second terminal. The radar system includes a partially reflective element coupled to the first terminal via a first line section and to the second terminal via a second line section. The partially reflective element is configured to reflect back a first portion of the oscillation signal as a reflected signal via the first line section to the first terminal and to pass on a second portion of the oscillation signal as a forward signal via the second line section to the second terminal.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: March 8, 2022
    Inventors: Philipp Schmidt, Alexander Melzer, Andreas Och
  • Publication number: 20220034998
    Abstract: A radar system is provided that includes a radar monolithic microwave integrated circuit (MIMIC). The radar MMIC includes a plurality of radar signal channels; and at least one sensor configured to measure a physical parameter related to a temperature of the radar MIMIC, and to generate sensor data corresponding to measured values of the physical parameter; and a controller configured to receive the sensor data from the at least one sensor, and to determine a channel operation of the plurality of radar signal channels, including selectively disabling at least a first radar signal channel of the plurality of radar signal channels and selectively enabling at least a second radar signal channel of the plurality of radar signal channels based on the measured values.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 3, 2022
    Applicant: Infineon Technologies AG
    Inventors: Francesco LOMBARDO, George EFTHIVOULIDIS, Rainer FINDENIG, Alexander MELZER
  • Patent number: 11239990
    Abstract: Noise test systems, methods, and circuitries are provided for determining a phase error of a first modulator using a second modulator. In one example, an integrated circuit device includes a first modulator configured to modulate a first signal to generate a first modulated signal and a second modulator configured to modulate a second signal to generate a second modulated signal. The first signal and the second signal are based on the same reference signal. The integrated circuit device also includes analysis circuitry configured to determine a phase error of the first modulator based on the first modulated signal and the second modulated signal.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: February 1, 2022
    Assignee: Infineon Technologies AG
    Inventors: Vincenzo Fiore, Werner Arriola, Oliver Lang, Alexander Melzer
  • Publication number: 20220026521
    Abstract: In accordance with an embodiment, a method of operating a radar system includes activating a transmitter to transmit a radar signal during a first time period, receiving a reflection of the radar signal from a radar antenna, downconverting the reflected radar signal, and digitally processing the downconverted reflected radar signal within a first frequency bandwidth using a first signal path. The method also includes deactivating the transmitter during a second time period, receiving a second signal from the radar antenna during the second time period, downconverting the second signal, measuring a power of the downconverted second signal within a second frequency bandwidth using a second signal path different from the first signal path, and determining an interference metric based on measuring the power.
    Type: Application
    Filed: October 8, 2021
    Publication date: January 27, 2022
    Inventors: Alexander Melzer, Paul Meissner, Mate Andras Toth
  • Patent number: 11215692
    Abstract: A method for use in a radar device is described herein. In accordance some implementations, the method includes generating an RF oscillator signal which includes frequency-modulated chirps, amplitude-modulating the RF oscillator signal by a modulation signal, and transmitting the amplitude-modulated RF oscillator signal via at least one antenna. In some implementations, the method may further include receiving an RF signal that includes frequency-modulated chirp echo signals from a target object, down-converting the received RF signal into a base band using the RF oscillator signal for providing a base band signal, and processing the base band signal to detect information included in the modulation signal.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: January 4, 2022
    Assignee: Infineon Technologies AG
    Inventors: Grigory Itkin, Paul Meissner, Alexander Melzer
  • Patent number: 11209523
    Abstract: A method for a radar apparatus is described. According to one example implementation, the method involves receiving a multiplicity of chirp echoes from transmitted radar signals and generating a digital signal based on the multiplicity of chirp echoes. In this case, each chirp echo has an associated subsequence of the digital signal. The method further involves performing a filtering in the time domain for one or more subsequences. The filtering in this case involves the decomposition of the subsequence into a plurality of components (referred to as principal components), the selection of a subset of components from the plurality of components and the reconstruction of a modified subsequence based on the selected subset of the component.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 28, 2021
    Assignee: Infineon Technologies AG
    Inventors: Paul Meissner, Alexander Melzer
  • 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
  • Publication number: 20210364598
    Abstract: A method of configuring a radar monolithic microwave integrated circuit (MMIC) and executing configured commands includes receiving and storing a plurality of configuration commands corresponding to unique time-dependent functions, each configuration command corresponding to a different one of the unique time-dependent functions; generating a unique command handle for each configuration command; transmitting the unique command handle for each configuration command to a controller; receiving and storing a bundled configuration command comprising a plurality of unique command handles corresponding to a set of configuration commands; generating a unique bundled command handle for the bundled configuration command; transmitting the unique bundled command handle to the controller; and receiving an execute command that includes the unique bundled command handle, where the execute command triggers execution of an execution flow of the unique time-dependent functions corresponding to the set of configuration commands
    Type: Application
    Filed: May 21, 2020
    Publication date: November 25, 2021
    Applicant: Infineon Technologies AG
    Inventors: Pranava TRIPATHI, Alexander GIRLINGER, Rene KOBLER, Alexander MELZER, Andreas VOGGENEDER
  • Patent number: 11175376
    Abstract: In accordance with an embodiment, a method of operating a radar system includes activating a transmitter to transmit a radar signal during a first time period, receiving a reflection of the radar signal from a radar antenna, downconverting the reflected radar signal, and digitally processing the downconverted reflected radar signal within a first frequency bandwidth using a first signal path. The method also includes deactivating the transmitter during a second time period, receiving a second signal from the radar antenna during the second time period, downconverting the second signal, measuring a power of the downconverted second signal within a second frequency bandwidth using a second signal path different from the first signal path, and determining an interference metric based on measuring the power.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: November 16, 2021
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Alexander Melzer, Paul Meissner, Mate Andras Toth
  • 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: 11156709
    Abstract: A radar system includes a first radar chip with a first RF contact, a second radar chip with a second RF contact, an RF signal path connecting the first RF contact to the second RF contact, and a local oscillator arranged in the first radar chip and configured to generate an RF oscillator signal, and which is coupled to the first RF contact to transmit the RF oscillator signal to the second radar chip. A feedback circuit arranged in the second radar chip is switchably connected to the second RF contact and is configured to reflect at least part of the RF oscillator signal arriving over the RFRF signal path as an RF feedback signal. A measurement circuit, arranged in the first radar chip, coupled to the first RF contact via a coupler receives the RF feedback signal and is configured to determine a signal that represents a phase shift.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: October 26, 2021
    Inventors: Alexander Melzer, Bernhard Gstoettenbauer, Alexander Onic, Clemens Pfeffer, Christian Schmid
  • 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: 11018728
    Abstract: A circuit includes a transmission channel that outputs a continuous-wave signal based on a reference signal, a transmit monitoring signal path that couples out a portion of the transmit signal as a monitoring signal, a test phase shifter that receives the reference signal and generates a phase-shifted signal based on a sequence of phase offsets applied to the reference signal, a phase mixer that mixes the phase-shifted signal and the monitoring signal to generate a mixer output signal including a plurality of direct current (DC) values, an analog-to-digital converter that samples the mixer output signal in order to provide a sequence of DC values; and a monitor circuit that applies a discrete Fourier transform (DFT) to the sequence of DC values to generate a plurality of DFT bins with corresponding DFT bin values, and generate compensated phase information of the transmission channel using at least two DFT bin values.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: May 25, 2021
    Inventors: Oliver Lang, Werner Arriola, Vincenzo Fiore, Alexander Melzer
  • Patent number: 11016171
    Abstract: A radar method is described herein. In accordance with one embodiment the method includes receiving a plurality of chirp echoes of transmitted radar signals, generating a digital signal based on the plurality of chirp echoes, and calculating a range map based on the digital signal. The range map includes a plurality of values, each value is represented by an amplitude value and a phase value, and each value is associated with one frequency bin of a set of frequency bins and one chirp echo of the plurality of chirp echoes. The method further includes identifying chirp echoes which are affected by interference and determining, for one or more selected frequency bins, corrected phase values based on phase values that are associated with chirp echoes not identified as affected by interference.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: May 25, 2021
    Inventors: Alexander Melzer, Mario Huemer, Paul Meissner, Fisnik Sulejmani, Matthias Wagner