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    Radar front-end with RF oscillator monitoring
    6.
    发明授权
    Radar front-end with RF oscillator monitoring 有权

    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

    IPC: G01S13/34 ,  G01S7/35 ,  G01S13/87 ,  G01S13/931 ,  G01S7/40 ,  G01S7/03 ,  G01S13/42

    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.

    RF transceiver with test capability
    7.
    发明授权
    RF transceiver with test capability 有权

    公开(公告)号：US10284248B2

    公开(公告)日：2019-05-07

    申请号：US15836022

    申请日：2017-12-08

    Applicant: Infineon Technologies AG

    Inventor： Helmut Kollmann ,  Jochen O. Schrattenecker ,  Florian Starzer

    IPC: H04L5/16 ,  H04B1/3822 ,  H01L23/66 ,  H01P5/12 ,  G01S7/03 ,  G01S7/40 ,  H04B17/17 ,  H04W24/02 ,  G01S13/93

    Abstract: An RF front-end circuit of an RF transceiver is described herein. In accordance with one exemplary embodiment, the fronted circuit includes a local oscillator (LO) configured to generate an RF transmit signal, an RF output port coupled to the local oscillator, wherein the RF transmit signal is output at the RF output port, and a monitoring circuit receiving an input signal and configured to determine the phase of the input signal or the power of the input signal or both. A directional coupler is coupled to the RF output port and configured to direct a reflected signal incoming at the RF output port as input signal to the monitoring circuit, and a controller is configured to detect, based on the determined phase or power or both, a defect in a signal path operably connected to the RF output port.

    RADAR TRANSMITTER WITH OUTPUT PHASE CONTROL
    10.
    发明申请
    RADAR TRANSMITTER WITH OUTPUT PHASE CONTROL 审中-公开

    公开(公告)号：US20200072940A1

    公开(公告)日：2020-03-05

    申请号：US16556708

    申请日：2019-08-30

    Applicant: Infineon Technologies AG

    Inventor： Jochen O. SCHRATTENECKER ,  Lukas Heschl ,  Helmut Kollmann ,  Mathias Zinnoecker

    IPC: G01S7/35 ,  G01S13/42

    Abstract: A radar transmitter is described. The radar transmitter may include the following: a transmit channel which is designed to receive a local oscillator signal and to generate a high-frequency (HF) radar signal based on the local oscillator signal; a phase shifter contained in the transmit channel which is designed to set a phase of the HF radar signal depending on an input phase value; and a coupler contained in the transmit channel which is designed to receive the HF radar signal and output the HF radar signal at an output contact. A phase controller circuit is assigned to the transmit channel, where the circuit is coupled with the coupler and is designed to receive the local oscillator signal and the HF radar signal, and to adjust the input phase value for the phase shifter based on a phase difference between the local oscillator signal and the HF radar signal.

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