Radar device, monitoring device, phase control circuit and method for monitoring a signal processing circuit

US11397240B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Bernhard Greslehner-Nimmervoll · Niederaich, AT
• Bernhard Gstoettenbauer · Felberleiten, AT
• Lukas Heschl · Linz, AT
• Evangelos Koutsouradis · Linz, AT
• Alexander Onic · Linz, AT

Key dates

• Filing date: Aug 28, 2019
• Grant date: Jul 26, 2022
• Expiry date: Jul 15, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03L7/197
• WIPO field: Measurement
• WIPO sector: Instruments

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.