Radar sensor and method for controlling same to reduce the crosstalk of digital signals to the HF radar signal

Patent metadata

Field	Value
Publication number	US-9285473-B2
Application number	US-201113583466-A
Country	US
Kind code	B2
Filing date	Jan 11, 2011
Priority date	Mar 8, 2010
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

The radar sensor has a transceiver device for generating a radar signal having a settable output power, a control unit and an interface unit. The transceiver device may be controlled via a digital interface via the interface unit and the control unit. One of the lines of the interface is connected to the control unit, the control unit being designed in such a way that when a predetermined level is present on this line, the output power of the transceiver device is lowered.

First claim

What is claimed is:

1. A radar sensor comprising:
a transceiver device to generate a radar signal, output power of the transceiver device being settable;
a control unit; and
an interface unit including a digital interface to control the transceiver device, wherein:
the digital interface is a serial interface that includes a plurality of lines;
the plurality of lines include a line for a selection signal, a line for a clock signal, and a line for at least one data signal;
the line for the selection signal is connected to the control unit; and
the control unit is configured to lower the output power of the transceiver device in response to the line for the selection signal being set at a predetermined level.

2. The radar sensor as recited in claim 1 , wherein the radar sensor is configured for the line for the selection signal to be at the predetermined level whenever the interface unit is activated for a data transmission via the digital interface.

3. The radar sensor as recited in claim 1 , wherein the lowering of the output power, which the control unit is configured to perform, is to a value that is predefined as a target value.

4. The radar sensor as recited in claim 3 , wherein the target value is predefined for the output power, emitted into side bands, to fall below a limiting value.

5. The radar sensor as recited in claim 1 , wherein the transceiver device is integrated on a Monolithic Microwave Integrated Circuit (MMIC) chip.

6. A method for controlling a radar sensor having a transceiver device for generating a radar signal, the transceiver device having a settable output power which is settable by a control unit via a digital interface, the method comprising:
lowering the output power of the transceiver device, by the control unit, in response to a line for a selection signal being set at a predetermined level;
wherein:
the digital interface is a serial interface that includes a plurality of lines;
the plurality of lines include the line for the selection signal, a line for a clock signal, and a line for at least one data signal; and
the line for the selection signal is connected to the control unit.

7. The method as recited in claim 6 , wherein the clock signal is applied to the digital interface only when the interface is activated for a data transmission via the selection signal.

Assignees

• Himmelstoss Armin
• Steinbuch Dirk
• Bosch Gmbh Robert

Inventors

• Himmelstoss Armin
• Steinbuch Dirk

Classifications

• G01S13/931 Primary

  of land vehicles · CPC title

• G01S7/4008

  of transmitters · CPC title

• G01S7/032

  Constructional details for solid-state radar subsystems · CPC title

• G01S7/038

  Feedthrough nulling circuits · CPC title

• G01S7/023

  Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques (auxiliary means for detecting or identifying radar signals or the like G01S7/021; means for anti-jamming G01S7/36) · CPC title