Radar front-end with RF oscillator monitoring

US11137489B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Florian Starzer · Ansfelden, AT
• Helmut Kollmann · Linz, AT
• Alexander Melzer · Neutillmitsch, AT
• Rainer Stuhlberger · Puchenau, AT
• Roland Vuketich · Arbing, AT
• Mathias Zinnoecker · Linz, AT

Key dates

• Filing date: May 8, 2020
• Grant date: Oct 5, 2021
• Expiry date: May 21, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S2013/9321
• WIPO field: Measurement
• WIPO sector: Instruments

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.