Unlock instant, AI-driven research and patent intelligence for your innovation.

Glass antenna

A glass antenna and glass technology, which is applied to antennas, antenna components, and independent antenna unit combinations, etc., can solve problems such as difficulty in grounding, difficulty in obtaining receiving sensitivity, etc., and achieve the effect of improving receiving sensitivity.

Active Publication Date: 2018-03-13
ASAHI GLASS CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, for example, when a vehicle has a hatchback made of a resin door, it may be difficult to perform mid-point grounding in the vicinity of the power feeding point on the ground side. In such a case, it is difficult to obtain sufficient reception sensitivity ( antenna gain)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Glass antenna
  • Glass antenna
  • Glass antenna

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0046] figure 1 It is a figure which shows an example of mounting the glass antenna 1 of 1st Embodiment in a vehicle.

[0047] Such as figure 1 As shown, a glass antenna 1 is mounted on a rear door 2 of a vehicle (for example, a hatchback type car). The back door 2 is made of resin, for example, and is attached to the rear of the vehicle so as to be openable and closable.

[0048] The glass antenna 1 includes a rear glass 100 for a vehicle, and a DAB antenna unit 10 and a defogger 20 having a heating wire 21 are arranged inside the rear glass 100 . Furthermore, the DAB antenna unit 10 includes a first element 11 , a second element 12 , and a DAB amplifier 15 . The DAB antenna unit 10 is connected to the coaxial cable 30 via the DAB amplifier 15 .

[0049] The DAB antenna unit 10 is a bipolar type antenna for receiving radio waves in a DAB frequency band. "DAB" is a specification of digital broadcasting such as Digital Audio Broadcasting. Furthermore, DAB is composed of t...

no. 2 approach

[0090] Next, refer to Figure 4 , the glass antenna 1a of the second embodiment will be described.

[0091] Figure 4 It is a figure which shows the structural example of the glass antenna 1a of 2nd Embodiment. exist Figure 4 in, for with figure 2 The same structure is marked with the same symbol and description is omitted.

[0092] In addition, the structure when the glass antenna 1a is mounted on a vehicle is basically the same as that of figure 1 The first embodiment shown is the same, and thus description thereof will be omitted. In addition, in this embodiment, the back door 2 is made of resin similarly to 1st Embodiment.

[0093] In the glass antenna 1a of this embodiment, the second element 12a is extended to the right area (blank area on the right side) of the defogger 20 and the point is provided with an L-shaped element 22a instead of the T-shaped element 22. , which is different from the first embodiment.

[0094] Such as Figure 4 As shown, the glass ant...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The glass antenna of the present invention includes a first element connected to a hot-side feeding point, a second element connected to an earth-side feeding point and a coaxial cable having an innerconductor and an outer conductor that is connected to a part of a vehicle body. The glass antenna of the present can improve receiving sensitivity.

Description

technical field [0001] The present invention relates to glass antennas. Background technique [0002] In recent years, there has been known a glass antenna for a vehicle in which the feeding point of the antenna is composed of dipoles on the heating side and the grounding side (for example, refer to Patent Document 1). In such a glass antenna for a vehicle, the inner conductor of the coaxial cable is connected to the feeding point on the heating side, and the outer conductor of the coaxial cable is connected to the feeding point on the ground side. Furthermore, the outer conductor of the coaxial cable is usually grounded to the vehicle body (midpoint ground) in the vicinity of the feed point on the ground side. Furthermore, when the wavelength of the center frequency of the frequency band to be received is λ (lambda), the first element connected to the feeding point on the heating side and the second element connected to the feeding point on the ground side are usually set ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/32
CPCH01Q1/3291H01Q1/1278H01Q1/1285H01Q1/325H01Q21/30H05B3/84H01Q5/40
Inventor 山本刚资小松洋平田畑耕司
Owner ASAHI GLASS CO LTD