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：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：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.