公开(公告)号：US20210391650A1

公开(公告)日：2021-12-16

申请号：US17412694

申请日：2021-08-26

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

Abstract: A circuit includes a radio frequency (RF) channel including an input node and an output node and being configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node; a mixer configured to mix an RF reference signal and an RF test signal representative of the RF output signal to generate a mixer output signal; an analog-to-digital converter configured to sample the mixer output signal in order to provide a sequence of sampled values; and a control circuit configured to provide a sequence of phase offsets by phase-shifting at least one of the RF test signal and the RF reference signal using one or more phase shifters, calculate a spectral value from the sequence of sampled values; and calculate estimated phase information indicating a phase of the RF output signal based on the spectral value.

公开(公告)号：US20200025899A1

公开(公告)日：2020-01-23

申请号：US16105111

申请日：2018-08-20

Applicant: Infineon Technologies AG

Inventor： Florian STARZER ,  Helmut KOLLMANN ,  Alexander MELZER ,  Rainer STUHLBERGER ,  Roland VUKETICH ,  Mathias ZINNOECKER

IPC: G01S13/34 ,  G01S7/35

Abstract: A radar method is described. According to one exemplary embodiment, the method includes generating a first RF oscillator signal in a first chip and supplying the first RF oscillator signal to a transmission (TX) channel of the first chip and transmitting the first RF oscillator signal from the TX channel of the first chip to the second chip via a transmission line.

公开(公告)号：US20190214724A1

公开(公告)日：2019-07-11

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 ,  G01R25/04 ,  G01S7/03 ,  G01S13/88

CPC classification number: H01Q3/36 ,  G01R25/04 ,  G01S7/032 ,  G01S13/88

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.

公开(公告)号：US20170153318A1

公开(公告)日：2017-06-01

申请号：US15358363

申请日：2016-11-22

Applicant: Infineon Technologies AG

Inventor： Alexander MELZER ,  Mario HUEMER ,  Alexander ONIC ,  Florian STARZER ,  Rainer STUHLBERGER

IPC: G01S7/40

Abstract: A method for estimating phase noise of an RF oscillator signal in a frequency-modulated continuous-wave (FMCW) radar system and related radar devices are provided. The method includes applying the RF oscillator signal to an artificial radar target composed of circuitry, which applies a delay and a gain to the RF oscillator signal, to generate an RF radar signal. Furthermore, the method includes down-converting the RF radar signal received from the artificial radar target from an RF frequency band to a base band, digitizing the down-converted RF radar signal to generate a digital radar signal, and calculating a decorrelated phase noise signal from the digital radar signal. A power spectral density of the decorrelated phase noise is then calculated from the decorrelated phase noise signal, and the power spectral density of the decorrelated phase noise is converted into a power spectral density of the phase noise of an RF oscillator signal.