KR20070054452A - Glass antenna - Google Patents

Abstract

The present invention relates to a glass antenna, wherein in a glass antenna in which a hot wire pattern is printed on a rear glass of a vehicle, a radio wave transmission layer capable of radio wave transmission is formed on the rear glass, and the upper and lower lengths of the radio wave transmission layer are 700 mm to 800 mm. With the configuration formed within the range, it is possible to improve the reception capability of the radio wave by adjusting the vertical length of the rear glass so that the radio wave can be optimally received by the rear glass without changing the shape of the vehicle body.

Rear glass, hot wire pattern, electric wave transmission layer, electric wave impermeability layer, conductor film layer

Description

Glass antenna {GLASS ANTENNA}

1 is a perspective view showing a glass antenna according to the prior art.

Figure 2a is a perspective view of a glass antenna according to the present invention.

Figure 2b is a front view showing the rear glass of the glass antenna according to the present invention.

3A is a state diagram showing resonance generation of radio waves formed in the rear glass by the glass antenna according to the present invention;

Figure 3b is a graph showing the radio wave collection amount of the glass antenna according to the present invention.

4 is a front view showing the rear glass of the glass antenna according to the present invention.

FIG. 5 is a cross-sectional view taken along the line “I-I” of FIG. 3;

<Code Description of Main Parts of Drawing>

100 rear glass 110 radio transmission layer

120 radio wave impermeable layer 130 heating pattern

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass antenna, and more particularly, to a glass antenna for improving a reception capability of a radio wave by forming a radio wave transmission layer having a vertical length of 700 mm to 800 mm capable of radio wave transmission in a rear glass of a vehicle in which a heating wire pattern is printed.

In general, a glass antenna installed in a window of a vehicle is configured to receive radio waves through the pattern by forming a hot wire pattern having a predetermined shape on the glass in order to receive a public broadcast such as a radio.

Such a conventional glass antenna may change the heating wire pattern formed on the rear glass to improve reception of received radio waves, or change the amplification and noise characteristics of the amplifier module connected to the heating wire pattern. It is also configured to improve reception sensitivity.

For example, in the glass antenna according to the related art, as shown in FIG. 1, the feed point is set at the left point of the rear glass 10 and between the upper row of the heating wire 11 and the vehicle body a and the heating wire 11. It is configured to receive radio waves using resonance phenomena generated in slots formed between the lower row of the vehicle and the vehicle body (b). The received radio wave is received by the feeder 12 mounted on the C-shaped pillar of the vehicle body and amplified by an amplifier module (not shown). Thus, the arrangement of the heating wires is improved to improve the radio wave reception performance received by the rear glass. It also changes the amplifier module configuration.

However, such a conventional glass antenna may be installed by changing the pattern of the heating wire or by modifying the amplifier module to improve the electric wave reception performance received by the glass antenna by adjusting the electrical impedance and sensitivity. That is, there is a problem that the reception performance of the radio wave received by the rear glass cannot be improved without changing the pattern of the heating wire or the configuration of the amplifier module.

An object of the present invention is to solve the above-mentioned problems of the prior art, to provide a glass antenna that can improve the reception performance of radio waves by adjusting the size of the rear glass without changing the shape of the vehicle body.

In order to achieve the above object, the present invention provides a glass antenna in which a hot wire pattern is printed on a rear glass of a vehicle, wherein the rear glass is provided with a radio wave transmission layer through which radio waves can be transmitted, and an up and down length of the radio wave transmission layer is 700 mm. It is formed in the range of ˜800 mm.

In this case, a radio wave impermeable layer may be formed on the rear glass having a vertical height of 800 mm or more, and the radio wave impermeable layer may be formed on an upper portion of the rear glass. In addition, the radio wave impermeable layer is a conductor film layer, characterized in that the transparent.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2a is a view showing a perspective view of the glass antenna according to the present invention, Figure 2b is a view showing a front view of the rear glass of the glass antenna.

As shown in Figure 2a and 2b, the glass antenna according to the present invention is a radio wave transmission layer 110 having a vertical length (h) in the 700mm ~ 800mm range on the rear glass 100, the heating wire pattern 130 is printed To form.

Specifically, the radio wave transmission layer 110 is formed in a predetermined area on the rear glass 100 of the vehicle so that radio waves can be received by the heating wire pattern 130 printed when the radio wave is incident on the vehicle, the radio wave transmission layer 110 The rear glass 100 is provided with a radio wave transmission layer 110 having an up-and-down length h within a range of 700 mm to 800 mm so that the radio wave incident through the FM frequency band generates maximum resonance.

That is, the amount of radio waves collected in the rear glass 100 of the vehicle may be determined according to the heating pattern formed on the rear glass 100 and the amplification degree and noise characteristics of the amplifier module, but also depending on the shape of the rear glass 100 of the vehicle. The amount of radio waves incident on the rear glass 100 may be determined.

3A is a diagram illustrating whether resonance occurs in radio waves formed in a rear glass of a vehicle.

As shown in FIG. 3A, the amount of radio waves gathered from the outside varies depending on the shape of the rear glass 100 of the vehicle, and the up and down length h of the rear glass 100 is simply extended to collect the radio waves. The amount is not increased. That is, when the vertical length (h) of the rear glass 100 is configured to a certain length, it can be seen that the amount of radio wave gathering in the FM frequency band may vary.

Table 1 is a diagram showing the FM frequency reception capability of the rear glass up and down length of different types of vehicles.

TABLE 1

A vehicle B vehicle C vehicle Rear glass up and down length (h) 930 mm 760 mm 510 mm FM frequency reception capability (98 MHz) 2v / m 5v / m 1v / m

As shown in Table 1, it can be seen that the FM frequency reception capability received according to the vertical length (h) of the different rear glasses 100 is changed. For example, in the case of vehicle A and vehicle C, wherein the rear glass 100 has an upper and lower length h of 930 mm and 51O mm, the FM frequency reception capability of each of the rear glasses 100 is 2v / m and 1v / m. Each appeared. In contrast, in the case of the B vehicle having the upper and lower lengths of the rear glass 100 of 760 mm, the FM frequency reception capability received by the rear glass 100 is 5v / m, indicating that the reception performance is improved.

That is, when the FM frequency wavelength is incident on the rear glass 100 of the vehicle, it causes different resonances depending on the vertical length (h) of the rear glass 100, the vertical length (h) is composed of a range of about 760mm In the case of the rear glass 100, it can be confirmed from the above data that the width resonated by the FM frequency wavelength increases. In this case, it is assumed that other conditions that may affect the radio wave reception performance, such as the pattern of the heating wire formed on the rear glass 100, the amplification degree of the amplifier module, and the noise characteristic, are the same.

3B is a graph showing the amount of radio waves gathered by the glass antenna according to different types of vehicles.

As shown in FIG. 3B, in the A vehicle having the vertical length h of the rear glass 100 of 930 mm, resonance is not generated in the FM frequency band (88 to 108 MHz), so that only a small amount of radio waves can be received. On the other hand, in vehicle B having the upper and lower length h of the rear glass 100 of 760 mm, resonance occurs in the FM frequency band (88 to 108 MHz) that is optimal for broadcast reception, and thus a large amount of radio waves can be received. In particular, the FM frequency band It can be seen that the peak is generated at the center of.

4 is a diagram illustrating a front view of a rear glass of a glass antenna according to the present invention, and FIG. 5 is a view taken along the line “I-I” of FIG. 3.

As described above, the radio wave transmission layer 110 formed on the rear slab preferably has an upper and lower length h within a range of 700 mm to 800 mm. As shown in FIGS. 4 and 5, the radio wave transmission layer In the case of the rear glass 100 having a vertical height of 800 mm or more, the radio wave impermeable layer 120 may be formed in a portion where the vertical height h is 800 mm or more.

That is, the radio wave impermeable layer 120 is for forming the radio wave transmission layer 110 exhibiting the optimum radio wave reception performance in the rear glass 100, the conductor film layer is used in this embodiment. The conductor film layer is interposed between the upper laminated glass (100a) and the lower laminated glass (100b) of the rear glass 100, is formed on the upper portion of the rear glass 100 located adjacent to the roof of the vehicle, The conductive film layer is preferably composed of a transparent conductive film layer to enable the rear view of the driver through the rear glass (100).

As described above, the present invention can improve the reception performance of the radio wave by adjusting the vertical length of the rear glass so that the radio wave can be optimally received in the rear glass. In addition, the present invention is to receive the radio wave by changing the upper and lower length (h) by forming a radio wave impermeable layer 120 on the rear glass 100 irrespective of the shape of the rear glass 100 is already determined by the design of the vehicle There is an advantage that can further improve performance.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that the invention can be variously modified and varied without departing from the spirit or scope of the invention as provided by the following claims. It will be obvious to those of ordinary skill.

As described above, according to the present invention, it is possible to improve the reception performance of radio waves by adjusting the vertical length of the rear glass so that the radio waves can be optimally received by the rear glass without changing the shape of the vehicle body. .

Claims (5)

In the glass antenna in which the hot wire pattern is printed on the rear glass of the vehicle, The rear glass A radio wave transmission layer is formed that can transmit radio waves, The vertical length of the radio wave transmission layer is a glass antenna, characterized in that formed in the range of 700mm ~ 800mm. The method according to claim 1, The rear glass of the upper and lower height of the radio wave transmission layer is 800mm or more A glass antenna, characterized in that a radio wave impermeable layer is formed to prevent transmission of radio waves. The method according to claim 2, The radio wave impermeable layer is formed on top of the rear glass. The method according to claim 2 or 3, The radio wave impermeable layer is a glass antenna, characterized in that the conductive film layer. The method according to claim 4, The glass impervious layer is characterized in that the glass antenna is formed transparent.

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