公开(公告)号：US20230016890A1

公开(公告)日：2023-01-19

申请号：US17809448

申请日：2022-06-28

Applicant: Infineon Technologies AG

Inventor： Michael GERSTMAIR ,  Michael PETIT ,  Josef KULMER ,  Julian MITTERLEHNER ,  Dominik BREUER ,  Alexander GIRLINGER

IPC: G01S7/40 ,  G01S13/931

Abstract: According to a further example implementation, the method comprises measuring magnitude response information relating to an analog baseband signal processing chain of a reception channel of a radar system, determining—based on the measured magnitude response information—at least one value which characterizes at least one frequency limit of the first baseband signal processing chain, and determining a phase response for the baseband signal processing chain based on the at least one value and a model of the baseband signal processing chain. The method also comprises digitizing an output signal from the baseband signal processing chain and digitally processing the digitized output signal, wherein phase equalizing is carried out based on the determined phase response during normal radar operation of the radar system.

公开(公告)号：US20190235051A1

公开(公告)日：2019-08-01

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 ,  G01S7/35

CPC classification number: G01S7/40 ,  G01S7/03 ,  G01S7/032 ,  G01S7/354 ,  G01S7/4017 ,  G01S13/343 ,  G01S13/87 ,  G01S13/931

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：US20250105924A1

公开(公告)日：2025-03-27

申请号：US18888949

申请日：2024-09-18

Applicant: Infineon Technologies AG

Inventor： Michael GERSTMAIR ,  Alexander Michael MELZER ,  Josef KULMER ,  Gunther KRAUT ,  Tobias BUCKEL

IPC: H04B17/12 ,  G01R23/16 ,  H04B17/15 ,  H04B17/21

Abstract: A method for determining phase information related to an RF transmission channel includes generating a frequency-modulated RF signal including a frequency ramp, coupling a first representation of the frequency-modulated RF signal to the RF transmission channel to generate a first frequency-modulated RF output signal, and coupling a second representation of the frequency-modulated RF signal to a test phase shifter. Measurement samples are generated during the frequency ramp based on phase shifting the second representation of the frequency-modulated RF signal according to a set of phase shift values to generate a frequency-modulated RF test signal, generating a down-converted signal based on mixing a first representation of the first frequency-modulated RF output signal with the frequency-modulated RF test signal, sampling the down-converted signal to generate, for each phase shift value, a respective measurement sample, and computing the phase information related to the RF transmission channel based on the measurement samples.

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：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.