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radar device

A technology of radar devices and radar waves, applied to measurement devices, radio wave reflection/re-radiation, re-radiation utilization, etc., can solve problems such as core layer thickness and hindrance to device miniaturization

Active Publication Date: 2017-09-19
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the attenuating radome described in Patent Document 1, since the attenuation rate of radio waves increases in proportion to the thickness of the core layer, there is a problem that it is not possible to sufficiently attenuate the radiation of radio waves in order to realize desired directivity. The technical problem of not forming the core layer thick
That is, there is a possibility that the miniaturization of the device may be hindered

Method used

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Experimental program
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no. 1 approach

[0029]

[0030] figure 1 The radar device 1 according to the first embodiment shown is mounted on a vehicle, and recognizes the presence of a vehicle by transmitting a radio wave (hereinafter referred to as a radar wave) with a predetermined frequency f0 and receiving a reflected wave of the radar wave from a target object. surrounding target objects.

[0031] The radar device 1 includes: a radar unit 50 having a circuit board on which an antenna is formed, and transmitting and receiving radar waves to identify a target object existing around the vehicle; a main body 10 for accommodating the radar unit 50; and a radome 20 attached to the vehicle. The main body 10 protects the circuit board 60 of the radar unit 50 housed in the main body 10 .

[0032] Such as figure 2 As shown, the circuit board 60 has, on one surface, a transmitting antenna unit 64 for transmitting radar waves and a receiving antenna unit 66 for receiving reflected waves from a target object that has refl...

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PUM

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Abstract

The present invention provides a radar device (1) capable of realizing desired directivity without hindering the miniaturization of the device. In a radar device (1), an antenna unit (62) that performs at least one of transmission and reception of radar waves is protected by a radome (20). On the opposite surface (37) of the radome (20) facing the antenna part (62), a radome space (18) formed by the radome (20) from the opposite surface (37) is provided. Protruding wall portion (41). The portion where the antenna aperture surface of the antenna portion (62) is projected onto the opposite surface (37) in the normal direction of the antenna aperture surface is defined as an aperture projection portion (39), and the wall portion (41) is formed to project along the aperture. At least a portion of the periphery of the portion (39).

Description

technical field [0001] The present invention relates to a radar device including an antenna and a radome for protecting the antenna. Background technique [0002] A radar device transmits radio waves and receives reflected waves of the transmitted radio waves to detect distances, directions, and the like from obstacles existing around. The antenna included in the radar device is protected by a radome. [0003] As such a radar device, a radar device including an attenuation radome portion in a radome is known (see Patent Document 1). The attenuating radome described in Patent Document 1 has a core layer formed of a material that imparts a high loss to radio waves (hereinafter referred to as radar waves) transmitted and received by the antenna, so that the radiation of radio waves in the direction passing through the attenuating radome reduce. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2003-243920 [0005] However, in the attenuating radome described in Pate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/03G01S13/93H01Q1/42G01S13/931
CPCG01S7/2813H01Q1/3233H01Q1/421G01S13/931G01S7/027H01Q1/42
Inventor 藤田晶久
Owner DENSO CORP