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Vehicle-mounted positioning antenna and vehicle glass

A technology for positioning antennas and vehicle glass, which is applied to antennas, antennas, antenna parts and other directions suitable for movable objects, and can solve the problems of antenna performance degradation, increase of vehicle wind resistance, large size of positioning antennas, etc., and achieve wide performance Good, low production cost, effect of reducing interference

Pending Publication Date: 2021-07-23
FUYAO GLASS IND GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the positioning antenna is mainly installed in the external shark fin, the front of the instrument panel or in the rearview mirror. The positioning antenna is large in size, and the installation in the shark fin increases the wind resistance of the car and increases the complexity of the roof shape design.
Combined with other antennas and placed in front of the instrument panel, it will be interfered by surrounding devices, which will degrade the performance of the antenna

Method used

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  • Vehicle-mounted positioning antenna and vehicle glass
  • Vehicle-mounted positioning antenna and vehicle glass
  • Vehicle-mounted positioning antenna and vehicle glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Such as figure 1 As shown, the embodiment of the present invention provides a positioning antenna applied to a vehicle, including an antenna unit 1 for receiving and transmitting positioning signals, and the antenna unit 1 can be arranged on a substrate 2 in a printing manner (not limited thereto), The antenna unit 1 is electrically connected to the feeder 3, and the feeder 3 is electrically connected to the control device. The control device is used to exchange position information with the outside world through the antenna unit 1. The control device is an existing CPU, single-chip microcomputer, etc., which can perform signal processing The device, and the connection mode of the feeding device 3 is also the prior art, and the structure diagram will not be repeated here; the back side of the substrate 2 is provided with a reflection cavity 4, and the projection of the antenna unit 1 towards the back of the substrate 2 is located in the reflection cavity 4 That is, when...

Embodiment 2

[0066] Such as Figure 4 As shown, the main difference from Embodiment 1 is that the antenna unit 1 is arranged on the front surface of the substrate 2, and the feeding device 3 also includes a ground plate 16 arranged on the back surface of the substrate 2; it can be understood that the antenna unit 1 can also be It is embedded in the substrate 2, that is, embedded in the substrate 2 (such as a laminated board). In order to better protect the antenna unit 1 . A cover 29 may be provided on the antenna unit 1, and the cover 29 is made of a material that can protect the antenna unit 1 but does not block electromagnetic waves, such as resin. Such as Figure 5As shown, the ground plate 16 is provided with a fifth slit 17 and a sixth slit 18, the shape of the fifth slit 17 and the sixth slit 18 is a broken line, preferably the fifth slit 17 and the sixth slit 18 are in the shape of a 90° broken line , the fifth patch 19 and the sixth patch 20 are respectively arranged on its two...

Embodiment 3

[0069] Such as Figure 6 As shown, the main difference from Embodiment 1 and Embodiment 2 is that the feeding device 3 includes a flexible circuit board 21, and the flexible circuit board 21 is an FPC board, and the material constituting the flexible circuit board 21 includes but is not limited to LCP (Industrial liquid crystal polymer), MPI (modified polyimide), PI (polyimide) and other materials. Such as Figure 7 As shown, a balun structure 22 is provided on the flexible circuit board 21, the head end of the balun structure 22 is electrically connected to the first feeder 13 and the second feeder 14 respectively, and its terminal is electrically connected to the control device through the coaxial feeder 15; Such as Figure 8 As shown, the terminals of the first helical arm 6 and the second helical arm 7 are tapered, that is, the gradual structure with gradually reduced width, thereby reducing the terminal reflection of the current on the first helical arm 6 and the second...

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Abstract

The invention discloses a vehicle-mounted positioning antenna, which comprises an antenna unit used for receiving and transmitting positioning signals, wherein the antenna unit is arranged on a base plate, the antenna unit is electrically connected with a feed device, and the feed device is electrically connected with a control device; and the back surface of the base plate is provided with a reflection cavity, the projection of the antenna unit towards the back surface direction of the base plate is located in the reflection cavity, and the reflection cavity is used for improving the directional radiation capability of the antenna unit. According to the invention, the antenna unit is arranged on the base plate, so that the size is reduced, the antenna can be conveniently mounted in a vehicle, optimization of a shark fin antenna is facilitated, the automobile wind resistance and the appearance design difficulty are reduced, and the directional radiation capability of the antenna unit is improved due to the arrangement of the reflection cavity. The invention further provides vehicle glass, the vehicle glass is provided with the vehicle-mounted positioning antenna, the vehicle glass is adopted as the base plate, and the size of the vehicle-mounted positioning antenna can be further reduced.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic equipment, in particular to a vehicle-mounted positioning antenna and vehicle glass. Background technique [0002] With the development of the automobile industry and the popularization of automobiles, people's requirements for automobile comfort, safety, convenience and intelligence are increasing. This requires the car to continuously exchange information with the outside world through the antenna, such as the positioning antenna of the vehicle, to give people location information, so as to facilitate the realization of functions such as navigation. [0003] A GNSS (Global Navigation Satellite System, global satellite navigation system) antenna is a main antenna used for positioning a mobile terminal. At present, positioning antennas are mainly installed in external shark fins, in front of dashboards or in rearview mirrors. The size of positioning antennas is relatively large, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q15/14H01Q1/32
CPCH01Q1/38H01Q1/50H01Q15/14H01Q1/48H01Q1/3275
Inventor 班涛董梦银潘成伟
Owner FUYAO GLASS IND GROUP CO LTD
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