公开(公告)号：US11029388B2

公开(公告)日：2021-06-08

申请号：US16259160

申请日：2019-01-28

Applicant: Infineon Technologies AG

Inventor： Alexander Melzer ,  Michael Gerstmair ,  Mario Huemer ,  Alexander Onic ,  Christian Schmid ,  Rainer Stuhlberger

IPC: G01S7/40 ,  G01S13/34 ,  G01S13/87 ,  G01S7/03 ,  G01S13/931 ,  G01S7/35

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.

公开(公告)号：US10805135B2

公开(公告)日：2020-10-13

申请号：US16529008

申请日：2019-08-01

Applicant: Infineon Technologies AG

Inventor： Oliver Lang ,  Alexander Onic ,  Christian Schmid

IPC: H04L27/28 ,  H04L27/26 ,  H04L5/00 ,  G01S13/00 ,  G01S13/02

Abstract: Methods for processing an OFDM radar signal are provided. A plurality of Nc×NDS receive samples corresponding to a number of NDS consecutive OFDM symbols is received, each OFDM symbol comprising a plurality of Nc subcarriers modulated with a respective modulation symbol. Each of the plurality of Nc×NDS receive samples is divided by its respective modulation symbol to generate a number of NDS processed OFDM symbols. The number of NDS processed OFDM symbols is decimated to generate at least one decimated OFDM symbol. A first type discrete Fourier transform (e.g. IFFT) of the at least one decimated OFDM symbol is performed to generate at least one first transformed vector.

公开(公告)号：US20190250598A1

公开(公告)日：2019-08-15

申请号：US16269594

申请日：2019-02-07

Applicant: Infineon Technologies AG

Inventor： Bernhard Greslehner-Nimmervoll ,  Rainer Findenig ,  Christian Schmid

IPC: G05B23/02 ,  G05B9/02 ,  G06F16/901 ,  H03M13/09

CPC classification number: G05B23/0221 ,  G05B9/02 ,  G05B23/0224 ,  G05B23/0264 ,  G05B23/0297 ,  G06F16/9014 ,  H03M13/093

Abstract: A device for monitoring a digital control unit with regard to functional safety is proposed. The device comprises an interface configured to receive a control signal of the digital control unit for a circuit component. The control signal represents a digital value. Furthermore, the device comprises a timer circuit configured to output an associated timer value in each case for successive points in time. The device furthermore comprises a hash value generator, which is configurable, in response to a change in the digital value, to recalculate a hash value on the basis of the change in the digital value and the timer value at the point in time of the change in the digital value.

公开(公告)号：US11428779B2

公开(公告)日：2022-08-30

申请号：US16262987

申请日：2019-01-31

Applicant: Infineon Technologies AG

Inventor： Christian Schmid ,  Rainer Findenig ,  Bernhard Greslehner-Nimmervoll

IPC: G01S7/40 ,  G01S7/03 ,  G01S13/87 ,  G01S7/35

Abstract: A semiconductor chip comprising at least one transmit channel and/or at least one receive channel for radar signals and also a sequencing circuit is proposed. In this case, the sequencing circuit is configured centrally to determine a sequencing scheme for time-dependent functions of the transmit channel and/or of the receive channel and to drive circuit elements of the transmit channel and/or of the receive channel in accordance with the sequencing scheme.

公开(公告)号：US11156709B2

公开(公告)日：2021-10-26

申请号：US16440211

申请日：2019-06-13

Applicant: Infineon Technologies AG

Inventor： Alexander Melzer ,  Bernhard Gstoettenbauer ,  Alexander Onic ,  Clemens Pfeffer ,  Christian Schmid

IPC: G01S13/58 ,  H03L7/081 ,  H04L7/033 ,  H03L7/099 ,  H03L7/091

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.

公开(公告)号：US20180356497A1

公开(公告)日：2018-12-13

申请号：US16000979

申请日：2018-06-06

Applicant: Infineon Technologies AG

Inventor： Andre Roger ,  Christian Schmid ,  Romain Ygnace

IPC: G01S7/295 ,  G06F13/30 ,  G01S7/28

CPC classification number: G01S7/295 ,  G01S7/2806 ,  G06F13/30

Abstract: A device for processing radar signals is suggested, the device comprising: (i) a memory, which is arranged to store radar data and (ii) an accessor comprising a DMA engine, wherein the accessor is arranged to access data of the memory via the DMA engine, to filter the accessed data, and to forward the filtered data.

公开(公告)号：US11099256B2

公开(公告)日：2021-08-24

申请号：US16000979

申请日：2018-06-06

Applicant: Infineon Technologies AG

Inventor： Andre Roger ,  Christian Schmid ,  Romain Ygnace

IPC: G01S7/295 ,  G01S7/03 ,  G01S7/28 ,  G06F13/30

Abstract: A device for processing radar signals is suggested, the device comprising: (i) a memory, which is arranged to store radar data and (ii) an accessor comprising a DMA engine, wherein the accessor is arranged to access data of the memory via the DMA engine, to filter the accessed data, and to forward the filtered data.

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：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：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.