Multibeam radar sensor with a fixing device for a polyrod

• US 6,667,722 B1
• Filed: 07/20/2001
• Issued: 12/23/2003
• Est. Priority Date: 08/21/1999
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Hauk, Joachim, Lucas, Bernhard, Schmidt, Ewald, Mayer, Hermann, Beez, Thomas
• Primary Examiner(s): Ho, Tan
• Application Number:
  US09/830,134
• Time in Patent Office: 886 Days
• Field of Search: 343/700.MS, 343/785, 343/786, 343/878
• US Class Current: 343/785
• CPC Class Codes: H01Q 1/12 Supports; Mounting means
• CPC Class Codes: H01Q 1/3233 particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
• CPC Class Codes: H01Q 1/3283 side-mounted antennas, e.g. bumper-mounted, door-mounted mounted on windscreens H01Q1/1271
• CPC Class Codes: H01Q 13/24 constituted by a dielectric or ferromagnetic rod or pipe H01Q13/28 takes precedence
• CPC Class Codes: H01Q 15/08 formed of solid dielectric material
• CPC Class Codes: H01Q 19/062 for focusing
• CPC Class Codes: H01Q 25/00 Antennas or antenna systems providing at least two radiating patterns arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00

Abstract

A multibeam radar sensor is proposed in which a holder (of resilient construction) for polyrods, in connection with a spacing element, holds the polyrods fixedly at a predetermined spacing, preferably in the range between 0 mm and 0.2 mm. The stays of the holder are fashioned such that a spring force constantly presses the spacing element against the base plate. In this context, the spring force is chosen such that the maintenance of the predetermined spacing a is ensured even under disadvantageous operating conditions such as vibration, shock, and impact.

Claims

1. A multibeam radar sensor, comprising:

a microwave conductor structure;

at least one polyrod situated over suitable points of the microwave conductor structure in order to achieve a pre-focusing of microwaves; and

a holder for fixing the at least one polyrod, the holder including;

at least one resilient region, and

a spacing element through which the holder fixes a spacing of the at least one polyrod from the microwave conductor structure.

2. The radar sensor according to claim 1, wherein:

the holder includes an opening in order to achieve a fixing reception of the at least one polyrod.

3. The radar sensor according to claim 1, wherein:

the spacing element is situated on an inside of the holder.

4. The radar sensor according to claim 3, wherein:

the spacing element is arranged as a fixed part of the holder.

5. The radar sensor according to claim 1, wherein:

the holder includes an additional spacing element arranged thereon.

6. The radar sensor according to claim 1, wherein:

the holder is arranged with a predetermined spring force.

7. The radar sensor according to claim 6, wherein:

the spring force is such that the at least one polyrod does not alter a predetermined spacing under stress from one of a shock, an impact, and a vibration.

8. The radar sensor according to claim 1, wherein:

the holder fixes the spacing of the at least one polyrod from the microwave conductor structure in a range between 0 mm and 0.2 mm.

9. A spacing element for a radar sensor, comprising:

a structure including an essentially non-elastic structure, wherein;

the structure is fixedly situated on an underside of a holder having at least one resilient region.

10. A spacing element for a radar sensor, comprising:

a structure including an essentially non-elastic structure, wherein;

the structure is fixedly situated on an underside of a holder, and wherein the spacing element fixes a spacing between at least one polyrod and a microwave conductor structure.