公开(公告)号：US20200072942A1

公开(公告)日：2020-03-05

申请号：US16554066

申请日：2019-08-28

Applicant: Infineon Technologies AG

Inventor： Bernhard GRESLEHNER-NIMMERVOLL ,  Bernhard GSTOETTENBAUER ,  Lukas HESCHL ,  Evangelos KOUTSOURADIS ,  Alexander ONIC

IPC: G01S7/40 ,  G01S13/28 ,  G01S7/28

Abstract: One example of a radar device includes a phase-locked loop for generating a radiofrequency signal. The phase-locked loop has a multi-modulus divider. The radar device furthermore comprises a delta-sigma modulator for generating a modulated signal for the multi-modulus divider, and a signal generator for generating an input signal for the delta-sigma modulator. The radar device has monitoring circuits, wherein a first monitoring circuit is configured to monitor a locked state of the phase-locked loop, a second monitoring circuit is configured to monitor the delta-sigma modulator, and a third monitoring circuit is configured to monitor the signal generator.