公开(公告)号：US20220334218A1

公开(公告)日：2022-10-20

申请号：US17651331

申请日：2022-02-16

Applicant: Infineon Technologies AG

Inventor： Josef KULMER ,  Patrick HOELZL ,  Hao LI

IPC: G01S7/40 ,  G01S13/58

Abstract: A method for the use in a radar system is described herein. In accordance with one implementation, the method includes providing a local oscillator signal to a transmit channel of a radar chip. The transmit channel generates an RF output signal based on the local oscillator signal. An internal RF test signal is generated by applying the local oscillator signal to the transmit channel. First and second phase values are determined for a first and a second value of an influence parameter of the radar chip based on internal measurements of the first and second phase values. Third and fourth phase values are determined for the first and second values of the influence parameter, respectively, based on the RF output signal. A calibration parameter is calculated based on the first, second, third, and fourth phase values and is used to estimate a phase of the RF output signal.

公开(公告)号：US20250110208A1

公开(公告)日：2025-04-03

申请号：US18478308

申请日：2023-09-29

Applicant: Infineon Technologies AG

Inventor： Jan Mateusz ZALESKI ,  Furqan Farooq FAZILI ,  Stefan HERZINGER ,  Muhammad FURQAN ,  Patrick HOELZL

IPC: G01S7/40

Abstract: In some implementations, a radar device may determine a corner frequency associated with a first analog baseband processing component in a first receive (RX) channel of a radar device. The radar device may measure a baseband delay associated with the first analog baseband processing component. The radar device may determine a phase response of the first analog baseband processing component based on the corner frequency, the baseband delay, and a phase transfer function model associated with the first analog baseband processing component. The radar device may digitize an analog output signal of the first analog baseband processing component to create a digitized output signal associated with the first RX channel. The radar device may correct the digitized output signal based on the phase response to create a phase corrected output signal associated with the first RX channel.

公开(公告)号：US20220026527A1

公开(公告)日：2022-01-27

申请号：US17305728

申请日：2021-07-14

Applicant: Infineon Technologies AG

Inventor： Josef KULMER ,  Ernst SELER ,  Hao LI ,  Gunther KRAUT ,  Oleksiy KLYMENKO ,  Patrick HOELZL

IPC: G01S7/40 ,  G01S7/03

Abstract: According to a first example implementation, the method comprises providing a local oscillator signal in a first radar chip based on a local oscillator signal generated in a further radar chip; supplying the local oscillator signal to a transmission channel of the first radar chip which, based on the local oscillator signal, generates an HF output signal; changing the temperature and/or supply voltage of the first radar chip; measuring phase values based on the local oscillator signal supplied to the transmission channel and of the corresponding HF output signal for different temperature values and/or for different supply voltage values of the first radar chip; and ascertaining calibration data based on the measured phase values for a phase calibration to compensate for changes in the phase of the HF output signal resulting from a change in the temperature and/or in the supply voltage.