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Radar sensors, especially lca sensors, for motor vehicles

A technology of radar sensor, motor vehicle, applied in the field of radar sensor

Active Publication Date: 2016-01-20
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This allows a cost-effective construction of the radar sensor

Method used

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  • Radar sensors, especially lca sensors, for motor vehicles
  • Radar sensors, especially lca sensors, for motor vehicles
  • Radar sensors, especially lca sensors, for motor vehicles

Examples

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Embodiment Construction

[0014] in figure 1 4 antenna elements 10, 12, 14, 16 are shown in, which are arranged in horizontal rows on an HF substrate not shown at uniform intervals. The antenna elements are represented here as individual patches. Through the feed network described in detail later, the antenna elements receive microwave signals, which should then be emitted as a radar beam. The center distance d of the antenna element is half the wavelength of the microwave beam in the example shown (d=λ / 2).

[0015] Same in figure 1 The phase distribution and amplitude distribution of the antenna elements 10, 12, 14, 16 are described in. Referring to the antenna element 10 (phase=0°) at the left end of the row, the second antenna element 12 has a phase shift of 60°, the third antenna element 14 has a phase shift of 120°, and the fourth antenna element 16 has a phase shift 180. The phase shift is therefore increased by the same increment (60°), and the antenna elements 10 and 16 at the opposite ends of ...

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PUM

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Abstract

The invention relates to a radar sensor for a motor vehicle (44) having a transmitting antenna (Tx) in the form of a planar combined antenna with a plurality of Antenna elements (10, 12, 14, 16) arranged side by side, said feed network for delivering microwave power to said antenna elements, characterized in that said feed network (26) is configured for feeding said The antenna elements (10, 12, 14, 16) deliver microwave power with a phase shift that increases in constant increments from one end of the row to the other.

Description

Technical field [0001] The present invention relates to a radar sensor for a motor vehicle, which has a transmitting antenna and a feed network. The transmitting antenna has the form of a planar combined antenna. The planar combined antenna has a plurality of antenna elements arranged side by side. The network is used to deliver microwave power to antenna elements. Background technique [0002] The radar sensor antenna provided for use in a motor vehicle is usually realized as a patch antenna on an HF substrate. This allows a cost-effective construction of the radar sensor. Through the use of combined antennas, the desired radar sensor directional characteristics can be achieved in terms of azimuth and / or in elevation, without the need for a radar lens. Separate antennas are usually used for the transmission of radar signals and the reception of reflected signals. The desired directional characteristics of the transmitting antenna in terms of azimuth can be achieved by: delive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/93H01Q3/30H01Q21/06G01S13/931
CPCH01Q1/3233H01Q3/30H01Q9/0407H01Q21/065H01Q21/08G01S13/931G01S2013/9315H01Q3/26H01Q3/28H01Q1/32H01Q3/34H01Q3/36H01Q21/06
Inventor T·宾策尔
Owner ROBERT BOSCH GMBH
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