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：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

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

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：US20190250247A1

公开(公告)日：2019-08-15

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 ,  G01S7/35 ,  G01S13/87

CPC classification number: G01S7/4004 ,  G01S7/03 ,  G01S7/35 ,  G01S7/4056 ,  G01S13/87

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：US20220381880A1

公开(公告)日：2022-12-01

申请号：US17819002

申请日：2022-08-11

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：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.

公开(公告)号：US20190383929A1

公开(公告)日：2019-12-19

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 ,  H03L7/091 ,  H03L7/099 ,  H04L7/033

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.