公开(公告)号：US20170153318A1

公开(公告)日：2017-06-01

申请号：US15358363

申请日：2016-11-22

Applicant: Infineon Technologies AG

Inventor： Alexander MELZER ,  Mario HUEMER ,  Alexander ONIC ,  Florian STARZER ,  Rainer STUHLBERGER

IPC: G01S7/40

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.

公开(公告)号：US20240134002A1

公开(公告)日：2024-04-25

申请号：US18048704

申请日：2022-10-20

Applicant: Infineon Technologies AG

Inventor： Esmaeil KAVOUSI GHAFI ,  Alexander MELZER ,  Matthias WAGNER ,  Oliver LANG

IPC: G01S7/40 ,  G01S7/35 ,  G01S13/58 ,  G01S13/89

CPC classification number: G01S7/40 ,  G01S7/356 ,  G01S13/584 ,  G01S13/89

Abstract: A radar device may generate an integrated range-velocity map by combining data from a plurality of range-velocity maps. Each range-velocity map may be associated with a respective radar channel from a plurality of radar channels. The radar device may identify a first peak in the integrated range-velocity map. The first peak may indicate one or more radar targets in the integrated range-velocity map and being identified by a first bin having a first range-velocity bin index. The radar device may determine a first data set by extracting, from each range-velocity map, data that is included in a respective bin associated with the first range-velocity bin index. The radar device may process the first data set to determine a first set of phase imbalances associated with the plurality of radar channels.

公开(公告)号：US20220308161A1

公开(公告)日：2022-09-29

申请号：US17684672

申请日：2022-03-02

Applicant: Infineon Technologies AG

Inventor： Alexander MELZER ,  Francesco LOMBARDO

IPC: G01S7/03 ,  G01S7/35 ,  G01S13/931 ,  H04B1/403

Abstract: A cascaded RF system includes a first MMIC and at least a second MMIC. During a first mode of operation: using an LO generation circuit of the first MMIC to generate a first LO signal based on a system clock signal; outputting the first LO signal from an LO output port of the first MMIC; receiving the first LO signal via a first LO input port of the first MMIC; and receiving the first LO signal via a second LO input port of the second MMIC. During a second mode of operation: using an LO generation circuit of the second MMIC to generate a second LO signal based on the system clock signal; and outputting the second LO signal from an LO output port of the second MMIC to a first LO input port of the second MMIC and to a second LO input port of the first MMIC.

公开(公告)号：US20220236375A1

公开(公告)日：2022-07-28

申请号：US17648858

申请日：2022-01-25

Applicant: Infineon Technologies AG

Inventor： Francesco LOMBARDO ,  Alexander MELZER

IPC: G01S7/40

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.

公开(公告)号：US20200301001A1

公开(公告)日：2020-09-24

申请号：US16870227

申请日：2020-05-08

Applicant: Infineon Technologies AG

Inventor： Florian Starzer ,  Helmut KOLLMANN ,  Alexander MELZER ,  Rainer STUHLBERGER ,  Roland VUKETICH ,  Mathias ZINNOECKER

IPC: G01S13/34 ,  G01S7/35

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：US20200174098A1

公开(公告)日：2020-06-04

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

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：US20200158825A1

公开(公告)日：2020-05-21

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: 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：US20200150260A1

公开(公告)日：2020-05-14

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 ,  H04B7/0413

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：US20200025870A1

公开(公告)日：2020-01-23

申请号：US16511769

申请日：2019-07-15

Applicant: Infineon Technologies AG

Inventor： Alexander MELZER ,  Bernhard GRESLEHNER-NIMMERVOLL ,  Clemens PFEFFER

IPC: G01S7/03 ,  G01S7/35

Abstract: The description below relates to a method for a radar sensor. According to one example implementation, the method comprises receiving configuration data and storing the received configuration data in a first radar chip having multiple transmission channels. The configuration data contain multiple parameter sets for a chirp sequence and association information representing an association of a respective chirp of the chirp sequence with one of the multiple parameter sets. The method further comprises receiving a trigger signal in the first radar chip. The trigger signal indicates the beginning of a respective chirp of the chirp sequence. The transmission channels mentioned are repeatedly configured in sync with the trigger signal, wherein for each chirp of the chirp sequence the transmission channels are configured according to the respective association information. The method further comprises receiving an RF oscillator signal representing the chirp sequence, and supplying the RF oscillator signal to the accordingly configured transmission channels.

公开(公告)号：US20190317187A1

公开(公告)日：2019-10-17

申请号：US16370095

申请日：2019-03-29

Applicant: Infineon Technologies AG

Inventor： Paul MEISSNER ,  Alexander MELZER

IPC: G01S7/35 ,  G01S13/34 ,  G01S13/93 ,  G01S13/53

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.