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Vehicle-body-embedded antenna device

一种天线装置、嵌入式的技术，应用在天线接地装置、天线支持物/安装装置、天线等方向，能够解决增加开发成本等问题，达到改善水平/垂直极化特性的效果

Active Publication Date: 2020-05-26
HARADA IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, glass antennas can increase development costs due to the need for specific, model-based development

Method used

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  • Vehicle-body-embedded antenna device
  • Vehicle-body-embedded antenna device
  • Vehicle-body-embedded antenna device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. figure 1 is a schematic perspective view showing a vehicle body embedded antenna device according to the present invention. figure 2 (a) and (b) are schematic diagrams for explaining the details of the vehicle body embedded antenna device according to the present invention, wherein figure 2 (a) is a top view, figure 2 (b) is a partial cross-sectional side view. exist figure 2 (a) and (b), with figure 1 The same reference numerals in the figure 1 same parts in . As shown in the figure, the vehicle body embedded antenna device according to the present invention is mainly composed of an antenna element 10 , a circuit board 20 , a coil 30 and a ground bracket 40 . As an example, these components need only be embedded eg in the roof R, or may be assembled in a spoiler.

[0035] The antenna element 10 is configured with a plate-shaped portion extending ...

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PUM

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Abstract

Provided is a vehicle-body-embedded antenna device which can be embedded in the body of a vehicle while exhibiting improved horizontal / vertical polarization characteristics. The vehicle-body-embeddedantenna device comprises an antenna element 10, a circuit board 20, a coil 30, and a grounding bracket 40. The antenna element 10 has the antenna capacity to function as a capacitive antenna that accommodates a first frequency band and is of a grounded type using a polarization substantially parallel to a roof surface as the main polarization. The coil 30 is mounted on the circuit board 20 and isconnected to a power supply unit 21 to which the antenna element 10 is connected such that the antenna element 10 has an antenna length that accommodates a second frequency band. The grounding bracket40 is directly grounded to a body electroconductive member disposed at an angle different from that of the roof surface so as to improve the sensitivity of the antenna element 10 to a polarization substantially perpendicular to the roof surface.

Description

technical field [0001] The present invention relates to an antenna device embedded in a vehicle body, and more particularly to an antenna device to be embedded in the roof of a vehicle. Background technique [0002] Each antenna device mounted on a vehicle and supporting a plurality of frequency bands covering eg AM / FM band includes various types such as a pole antenna, a roof mount antenna, and a glass antenna. Unfortunately, a post antenna with a large amount of protrusion is more likely to bend due to contact etc. Roof mount antennas need to be placed flat or removed from the vehicle body in multi-storey parking garages or automatic car washes due to their high ground height. Additionally, glass antennas can increase development costs by requiring specific, model-based development. [0003] Then, recently, the tendency of emphasizing vehicle design is increasing, and therefore, an antenna device to be mounted on a vehicle is required not to spoil the appearance of the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/32B60R11/02H01Q1/22H01Q5/10H01Q5/335H01Q9/40
CPCH01Q5/335H01Q9/40H01Q1/3275H01Q9/0407H01Q21/24H01Q5/10B60R11/02H01Q1/22H01Q1/48
Inventor 今村丰小林龙治石田淳
Owner HARADA IND CO LTD