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公开(公告)号：US20240230836A9
公开(公告)日：2024-07-11
申请号：US18048704
申请日：2022-10-21
Applicant: Infineon Technologies AG
Inventor： Esmaeil KAVOUSI GHAFI , Alexander MELZER , Matthias WAGNER , Oliver LANG
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.
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公开(公告)号：US20200052941A1
公开(公告)日：2020-02-13
申请号：US16529008
申请日：2019-08-01
Applicant: Infineon Technologies AG
Inventor： Oliver LANG , Alexander ONIC , Christian SCHMID
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.
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3.发明申请公开(公告)号：US20200382170A1
公开(公告)日：2020-12-03
申请号：US16423499
申请日：2019-05-28
Applicant: Infineon Technologies AG
Inventor： Oliver LANG , Werner ARRIOLA , Vincenzo FIORE , Alexander MELZER
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.
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Patent Agency Ranking
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
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.
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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.
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6.发明申请公开(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.
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公开(公告)号：US20240137135A1
公开(公告)日：2024-04-25
申请号：US18483997
申请日：2023-10-10
Applicant: Infineon Technologies AG
Inventor： Oliver LANG , Matthias WAGNER , Esmaeil KAVOUSI GHAFI , Andreas SCHWARZ
CPC classification number: H04B17/13 , H04B17/14 , H04B17/201
Abstract: A method for determining a nonlinearity characteristic of a receiver path includes generating a set of N×M digital samples by repeating N times selecting an scaling factor from a set of N scaling factors, generating a version of a test signal, the version of the test signal corresponding to a test signal scaled by the respective scaling factor, processing the respective version of the test signal in at least a part of the receiver path to generate a respective processed signal, and storing M digital samples corresponding to the respective processed signal. Fourier-transformed data are generated using at least a portion of the set of N×M digital samples and a nonlinearity characteristic of the receiver path is determined based on the Fourier-transformed data.
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公开(公告)号：US20210025973A1
公开(公告)日：2021-01-28
申请号：US16909113
申请日：2020-06-23
Applicant: Infineon Technologies AG
Inventor： Vincenzo FIORE , Werner ARRIOLA , Rene KOBLER , Oliver LANG , Alexander MELZER
IPC: G01S7/40
Abstract: A method for the use in a radar system is described herein. In accordance with one embodiment, the method includes providing a local oscillator signal to an RF output channel of a radar system. The RF output channel is configured to generate, in an enabled state, an RF output signal based on the local oscillator signal. The method further includes determining a first measurement signal based on the local oscillator signal and a first representation of the RF output signal, while the RF output channel is disabled, and thus the first measurement signal represents crosstalk. Further, the method includes determining a second measurement signal based on the local oscillator signal and a second representation of the RF output signal while the RF output channel is enabled. A phase value associated with the RF output channel is determined based on the first measurement signal and the second measurement signal.
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