Multibeam radar sensor apparatus and method for determining a distance

US8803729B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Michael Klar · Magstadt, DE
• Thomas Binzer · Bietigheim-Bissingen, DE
• Klaus-Dieter Miosga · Backnang, DE
• Oliver Brueggemann · Peine, DE
• Volker Gross · Ditzingen, DE
• Joachim Hauk · Renningen, DE
• Dirk Steinbuch · Wimsheim, DE
• Goetz Kuehnle · Hemmingen, DE
• Juergen Seiz · Welzheim, DE

Key dates

• Filing date: Feb 17, 2010
• Grant date: Aug 12, 2014
• Expiry date: Jun 17, 2031

Classification

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

Abstract

In a multibeam radar sensor apparatus having at least two transmission/reception channels, whose signal paths each include an antenna and a mixer, at least one first mixer is configured bidirectionally as a transfer mixer, and at least one second mixer is switchable from a first into a second operating state; in the first operating state, the mixer is bidirectionally configured as a transfer mixer, and in the second operating state, the mixer being configured in an at least approximately isolating manner as a receiving mixer. In addition, in a method for determining a distance and/or a speed of a target, a radar signal is transmitted in a direction of the target and a reflected radar echo is received, for which at least two transmission/reception channels are used whose signal paths each include an antenna and a mixer; at least one mixture is switched over from a first into a second operating state, in order to use the mixer, in the first operating state, bidirectionally as a transfer mixture, and, in the second operating state, in an at least approximately isolating manner as a receiving mixer.