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公开(公告)号：US11486999B2
公开(公告)日：2022-11-01
申请号：US16360818
申请日：2019-03-21
Applicant: Infineon Technologies AG
Inventor： Farhan Bin Khalid , Andreas Och , Alexander Melzer , Clemens Pfeffer , Andre Roger , Philipp Schmidt
Abstract: A radar system is described. In accordance with one example implementation, the radar system comprises a passive coupler arrangement and also a first radar chip, a second radar chip and a third radar chip. The radar chips each comprise at least one external RF contact and also a local oscillator designed to generate an RF oscillator signal at least in a switched-on state. The external RF contacts of the radar chips are coupled via the coupler arrangement in such a way that, in a first operating mode, the RF oscillator signal can be transferred from the first radar chip via the coupler arrangement to the second radar chip and the third radar chip, and that, in a second operating mode, the RF oscillator signal can be transferred from the second radar chip via the coupler arrangement to the third radar chip.
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公开(公告)号：US11215692B2
公开(公告)日：2022-01-04
申请号：US16356385
申请日：2019-03-18
Applicant: Infineon Technologies AG
Inventor： Grigory Itkin , Paul Meissner , Alexander Melzer
IPC: G01S7/02 , G01S13/34 , G01S13/931 , G01S7/35 , G01S7/41
Abstract: A method for use in a radar device is described herein. In accordance some implementations, the method includes generating an RF oscillator signal which includes frequency-modulated chirps, amplitude-modulating the RF oscillator signal by a modulation signal, and transmitting the amplitude-modulated RF oscillator signal via at least one antenna. In some implementations, the method may further include receiving an RF signal that includes frequency-modulated chirp echo signals from a target object, down-converting the received RF signal into a base band using the RF oscillator signal for providing a base band signal, and processing the base band signal to detect information included in the modulation signal.
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公开(公告)号：US11158944B2
公开(公告)日：2021-10-26
申请号：US16244712
申请日：2019-01-10
Applicant: Infineon Technologies AG
Inventor： Jochen O. Schrattenecker , Niels Christoffers , Vincenzo Fiore , Bernhard Gstoettenbauer , Helmut Kollmann , Alexander Melzer , Alexander Onic , Rainer Stuhlberger , Mathias Zinnoecker
IPC: H01Q3/36 , G01S7/35 , G01S7/40 , H03L7/06 , G01S13/02 , G01S13/34 , G01S7/03 , G01S13/88 , G01S13/931 , H04B1/16 , H04B1/10 , G01R25/04
Abstract: A circuit is described herein. In accordance with one embodiment the circuit includes two or more RF channels, wherein each channel includes an input node, a phase shifter and an output node. Each channel is configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node. The circuit further includes an RF combiner circuit that is coupled with the outputs of the RF channels and configured to generate a combined signal representing a combination of the RF output signals, and a monitor circuit that includes a mixer and is configured to receive and down-convert the combined signal using an RF reference signal. Thus a mixer output signal is generated that depends on the phases of the RF output signals.
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4.发明授权公开(公告)号：US11018728B2
公开(公告)日：2021-05-25
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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公开(公告)号：US11899125B2
公开(公告)日：2024-02-13
申请号：US17506048
申请日：2021-10-20
Applicant: Infineon Technologies AG
Inventor： Alexander Melzer , Rainer Findenig
CPC classification number: G01S7/2813 , G01S7/0232 , G01S13/50
Abstract: A radio frequency (RF) circuit includes an input terminal configured to receive a reception signal from an antenna; an output terminal configured to output a digital output signal; a receive path including a mixer and an analog-to-digital converter (ADC), wherein the receive path is coupled to and between the input and output terminals, wherein the receive path includes an analog portion and a digital portion, and wherein the ADC generates a digital signal based on an analog signal received from the analog portion; a test signal generator configured to generate an analog test signal injected into the analog portion of the receive path; and a digital processor configured to receive a digital test signal from the digital portion, the digital test signal being derived from the analog test signal, analyze a frequency spectrum of the digital test signal, and determine a quality of the digital test signal.
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Patent Agency Ranking
公开(公告)号：US11422230B2
公开(公告)日：2022-08-23
申请号：US16563246
申请日：2019-09-06
Applicant: Infineon Technologies AG
Inventor： Peter Bogner , Christoph Affenzeller , Alexander Melzer , Martin Wiessflecker
Abstract: A method includes: receiving a reflected radar signal including a first radar chirp signal during a first chirp time period and a second radar chirp signal during a second chirp time period; downconverting the reflected radar signal to form a baseband signal; adding a DC offset to the baseband signal to form a DC offset baseband signal, adding the DC offset including adding a first DC offset to the baseband signal during the first chirp time period, and adding a second DC offset to the baseband signal during the second chirp time period, where the first DC offset is different from the second DC offset; and digitizing the DC offset baseband signal using an analog-to-digital converter to form a digitized baseband signal.
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公开(公告)号：US11209523B2
公开(公告)日：2021-12-28
申请号：US16370095
申请日：2019-03-29
Applicant: Infineon Technologies AG
Inventor： Paul Meissner , Alexander Melzer
IPC: G01S7/35 , G01S13/34 , G01S13/53 , G01S13/931
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.
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公开(公告)号：US11156709B2
公开(公告)日：2021-10-26
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
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.
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公开(公告)号：US11137489B2
公开(公告)日：2021-10-05
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
Abstract: A radar system includes a first chip having a first radio frequency (RF) contact; a second chip having a second RF contact; a first RF oscillator integrated in the first chip and has an output coupled to the first RF contact; a second RF oscillator integrated in the second chip; a transmission line connecting the first RF contact to the second RF contact; a demodulator that is arranged in the second chip and has a first RF input; wherein the first RF oscillator is configured to generate a first RF oscillator signal that is transmitted to the first RF input of the demodulator via the first RF contact, the transmission line, and the second RF contact, and wherein a controller is configured to determine a first propagation delay of the first RF oscillator signal arriving at the second chip on a basis of information obtained from the demodulator.
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公开(公告)号：US20210072346A1
公开(公告)日：2021-03-11
申请号：US16563246
申请日：2019-09-06
Applicant: Infineon Technologies AG
Inventor： Peter Bogner , Christoph Affenzeller , Alexander Melzer , Martin Wiessflecker
Abstract: In accordance with an embodiment, a method includes: receiving a reflected radar signal including a first radar chirp signal during a first chirp time period and a second radar chirp signal during a second chirp time period; downconverting the reflected radar signal to form a baseband signal; adding a DC offset to the baseband signal to form a DC offset baseband signal, adding the DC offset including adding a first DC offset to the baseband signal during the first chirp time period, and adding a second DC offset to the baseband signal during the second chirp time period, where the first DC offset is different from the second DC offset; and digitizing the DC offset baseband signal using an analog-to-digital converter to form a digitized baseband signal.
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