公开(公告)号：US11693106B2

公开(公告)日：2023-07-04

申请号：US16675574

申请日：2019-11-06

Applicant: Infineon Technologies AG

Inventor： Oliver Lang ,  Michael Gerstmair ,  Alexander Melzer ,  Christian Schmid

IPC: G01S13/58 ,  G01S7/41 ,  H04B7/04 ,  H04B7/0413

CPC classification number: G01S13/584 ,  G01S7/415 ,  H04B7/0413

Abstract: Methods for detecting radar targets are provided. According to one exemplary embodiment, the method includes providing a digital radar signal having a sequence of signal segments. Each signal segment of the sequence is respectively associated with a chirp of a transmitted RF radar signal. The method further includes detecting one or more radar targets based on a first subsequence of successive signal segments of the sequence. For each detected radar target, a distance value and a velocity value are determined. If a group of radar targets having overlapping signal components has been detected, a respective spectral value is calculated for each radar target of the group of radar targets based on a second subsequence of the sequence of signal segments and further based on the velocity values ascertained for the group of radar targets.

公开(公告)号：US11681013B2

公开(公告)日：2023-06-20

申请号：US16886233

申请日：2020-05-28

Applicant: Infineon Technologies AG

Inventor： Alexander Melzer ,  Clemens Pfeffer

IPC: G01S7/32 ,  G01S7/35 ,  G01S7/03 ,  G01S13/58 ,  G01S13/32 ,  G01S13/931 ,  G01S13/34 ,  G01S13/00 ,  G01S13/87

CPC classification number: G01S7/032 ,  G01S7/35 ,  G01S7/03 ,  G01S7/352 ,  G01S13/003 ,  G01S13/32 ,  G01S13/343 ,  G01S13/583 ,  G01S13/584 ,  G01S13/878 ,  G01S13/931

Abstract: A radar system and a method for a radar system are described. In accordance with one exemplary embodiment, the method includes generating a local oscillator signal in a first radar chip, generating a frequency-divided signal from the local oscillator signal by means of a frequency divider arranged in the first radar chip, transmitting the frequency-divided signal to a second radar chip, and transmitting the local oscillator signal to the second radar chip. The local oscillator signal received in the second radar chip is fed to an output channel of the second radar chip, which generates an output signal on the basis thereof. The method further includes generating—on the basis of the output signal of the output channel and the frequency-divided signal received by the second radar chip—a signal indicating a phase angle of the output signal relative to the received frequency-divided signal.

公开(公告)号：US11592520B2

公开(公告)日：2023-02-28

申请号：US16703658

申请日：2019-12-04

Applicant: Infineon Technologies AG

Inventor： Paul Meissner ,  Alexander Melzer ,  Christian Schmid ,  Mate Andras Toth

IPC: G01S7/02 ,  G01S7/40 ,  G01S13/931 ,  G01S13/00

Abstract: A method is described below which can be used in a radar system. According to one example implementation, the method comprises providing a digital baseband signal using a radar receiver. The baseband signal comprises a plurality of segments, wherein each segment is assigned to a chirp of an emitted chirp sequence and each segment comprises a specific number of samples. For each signal sequence of n samples of the segments, where n in each case denotes a specific sample position within the respective segment, the method comprises the following: detecting interference-affected samples of the signal sequence; splitting the signal sequence into two or more sub-band signal sequences, wherein each sub-band signal sequence is assigned in each case to a frequency sub-band; replacing interference-affected samples in the two or more sub-band signal sequences in each case with a value which is based on adjacent samples in order to obtain corrected sub-band signal sequences; and determining a corrected signal sequence of n samples of the segments based on the corrected sub-band signal sequences.

公开(公告)号：US11415671B2

公开(公告)日：2022-08-16

申请号：US16689697

申请日：2019-11-20

Applicant: Infineon Technologies AG

Inventor： Paul Meissner ,  Michiel Helsloot ,  Alexander Melzer ,  Vladimir Petrovic ,  Christoph Steiner ,  Hendrikus Van Lierop

IPC: G01C3/08 ,  G01S7/48

Abstract: The present disclosure relates to a light detection and ranging (LIDAR) sensor comprising a detector configured to generate a first detector signal at a first delay time following an emission of a first light pulse and to generate at least one second detector signal at the first delay time following an emission of at least a second light pulse; and a processor configured to generate a combined signal for the first delay time based on a combination of the first detector signal and the at least one second detector signal. Depending on the type of combination, the combined signal can be used for interference detection or mitigation.

公开(公告)号：US11366199B2

公开(公告)日：2022-06-21

申请号：US16697782

申请日：2019-11-27

Applicant: Infineon Technologies AG

Inventor： Oliver Lang ,  Michael Gerstmair ,  Alexander Melzer ,  Alexander Onic ,  Christian Schmid

IPC: G01S7/40 ,  G01S13/00 ,  G01S13/931

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.

公开(公告)号：US11239990B2

公开(公告)日：2022-02-01

申请号：US16891445

申请日：2020-06-03

Applicant: Infineon Technologies AG

Inventor： Vincenzo Fiore ,  Werner Arriola ,  Oliver Lang ,  Alexander Melzer

IPC: H04L7/00

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.

公开(公告)号：US11175376B2

公开(公告)日：2021-11-16

申请号：US16134814

申请日：2018-09-18

Applicant: Infineon Technologies AG

Inventor： Alexander Melzer ,  Paul Meissner ,  Mate Andras Toth

IPC: G01S7/02 ,  G01S7/35

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.

公开(公告)号：US10684363B2

公开(公告)日：2020-06-16

申请号：US16105111

申请日：2018-08-20

Applicant: Infineon Technologies AG

Inventor： Florian Starzer ,  Helmut Kollmann ,  Alexander Melzer ,  Rainer Stuhlberger ,  Roland Vuketich ,  Mathias Zinnoecker

IPC: G01S7/35 ,  G01S13/34

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.

公开(公告)号：US20200088838A1

公开(公告)日：2020-03-19

申请号：US16134814

申请日：2018-09-18

Applicant: Infineon Technologies AG

Inventor： Alexander Melzer ,  Paul Meissner ,  Mate Andras Toth

IPC: G01S7/02 ,  G01S7/35

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.

公开(公告)号：US12210116B2

公开(公告)日：2025-01-28

申请号：US17591718

申请日：2022-02-03

Applicant: Infineon Technologies AG

Inventor： Philipp Schmidt ,  Alexander Melzer ,  Andreas Och

IPC: G01S7/03 ,  G01S7/35 ,  G01S13/04 ,  G01S13/34

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.