Antenna device

An antenna device and antenna technology, applied in antennas, antenna arrays, leaky waveguide antennas, etc., can solve problems such as difficulty in preventing leakage and inability to obtain wall current offset effects

Inactive Publication Date: 2013-02-13
HONDA ELESYS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, between adjacent antennas, even if the received waves have the same frequency, they are separate signals, and the cancellation effect of wall current cannot be obtained, making it difficult to prevent leakage.

Method used

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Examples

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Embodiment Construction

[0047] figure 1 It is a front view showing the configuration of an antenna device (radar antenna 1 ) according to an embodiment of the present invention installed in a vehicle-mounted radar device.

[0048] In this embodiment, an arrangement configuration of an antenna device (radar antenna 1 ) provided in a radar device that performs DBF is shown.

[0049] figure 2 It is the structure (three-dimensional structure) of the antenna device according to the embodiment of the present invention installed in the vehicle-mounted radar device, and (A) is figure 1 The front view of the range 3000 of the part enclosed by the dotted line shown in , (B) is a transverse cross-sectional view along the transverse cutting line I-I in the front view, (C) is a longitudinal cross-section perpendicular to the transverse direction in the front view The longitudinal sectional view of the line II-II, (D) is a rear view of the metal frame 22 viewed in the height direction III direction in the tra...

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PUM

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Abstract

An antenna device includes antennas, each of which includes antenna elements arranged in a longitudinal direction, arranged side by side in a transverse direction intersecting the longitudinal direction, wherein an interval between the antennas arranged side by side in the transverse direction is approximately 2[lambda]. where [lambda] is a free space wavelength corresponding to an operating frequency, and each of the antenna elements includes a horn formed therein.

Description

technical field [0001] The present invention relates to an antenna device used in an on-vehicle radar device for monitoring the traveling direction of a motor vehicle. Background technique [0002] In-vehicle radar devices, for example, have a radar function using millimeter waves to improve the safety of motor vehicles, and for the popularization of such devices, devices with higher performance and lower prices are being developed. Such an on-vehicle radar device performs, for example, digital beam forming (DBF: Digital Beam Forming). [0003] A radar device that performs DBF has a plurality of rows of receiving antennas arranged horizontally, converts the received signals from each receiving antenna into digital data, and performs equivalent phase difference on each received signal through arithmetic processing and combines them to generate a scanning beam . High-speed, high-precision scanning is possible without the need for drive parts or movable mechanisms. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/08H01Q13/02H01Q13/22
CPCH01Q21/064H01Q21/08H01Q21/005H01Q13/02H01Q13/22
Inventor 阿部朗
Owner HONDA ELESYS CO LTD
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