KR-20260064021-A - AUTOMOTIVE GLASS EQUIPPED WITH ANTENNA

KR20260064021AKR 20260064021 AKR20260064021 AKR 20260064021AKR-20260064021-A

Abstract

A vehicle glass having an antenna is provided. The vehicle glass comprises: a first glass layer; and a metal thin film layer disposed on top of the first glass layer and having an antenna pattern. Herein, the antenna pattern comprises: a first monopole antenna pattern extending longitudinally from a feed line and radiating a predetermined first frequency band signal; a first transverse branch pattern extending transversely from a terminal end of the first monopole antenna pattern to a first side; and a meander radiation pattern extending transversely from a point between a feed line connection and a terminal end of the first monopole antenna pattern to a second side, having a meander line, and radiating a second frequency band signal lower than the first frequency band.

Inventors

홍원빈
김수민
조성대
박상진
김경민
복진비
김민경

Assignees

주식회사 케이씨씨글라스
포항공과대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (10)

As a vehicle glass equipped with an antenna, First glass layer; and A metal thin film layer disposed on top of the first glass layer and having an antenna pattern; comprising The above antenna pattern is, A first monopole antenna pattern extending longitudinally from a feed line and radiating a predetermined first frequency band signal; A first transverse branch pattern extending from the end portion of the first monopole antenna pattern to a first transverse side; A meander radiation pattern extending to a second lateral side in the transverse direction from a point between the feed line connection part and the end part of the first monopole antenna pattern, having a meander line, and radiating a second frequency band signal lower than the first frequency band; comprising Vehicle glass equipped with an antenna.
In Article 1, The above meander radiation pattern is, A first transverse pole pattern having a first end coupled to the first monopole antenna pattern; A first longitudinal pole pattern having a first end coupled to a second end of the first transverse pole pattern; A meander line having a first end coupled to a second end of the first longitudinal pole pattern, formed in a transverse direction away from the first monopole antenna pattern, wherein the first transverse pole pattern shape and the first longitudinal pole pattern shape are repeatedly arranged, and having an end portion of the first transverse pole pattern shape located at the upper end; A second longitudinal pole pattern coupled to the end portion of the above meander line, wherein the lower portion is positioned at the same longitudinal position as the lower portion of the above meander line, and the upper portion is positioned higher than the upper portion of the above meander line; A second transverse pole pattern extending transversely from the upper portion of the second longitudinal pole pattern toward the first monopole antenna pattern and positioned spaced apart from the first monopole antenna pattern by a predetermined distance; comprising Vehicle glass equipped with an antenna.
In Article 2, The length of the first monopole antenna pattern above is, Three times the length of the first transverse branch pattern above, Vehicle glass equipped with an antenna.
In Paragraph 3, The length of the first transverse pole pattern is 0.5 times the length of the first transverse branch pattern, and The length of the first longitudinal pole pattern is twice the length of the first transverse branch pattern, and The length of the second longitudinal pole pattern is three times the length of the first transverse branch pattern, and The length of the second transverse pole pattern is four times the length of the first transverse branch pattern, Vehicle glass equipped with an antenna.
In Article 2, The above antenna pattern is, A first current flow path composed of the first monopole antenna pattern and the first transverse branch pattern; A second current flow path composed of the above-mentioned first transverse pole pattern, first longitudinal pole pattern, meander line, second longitudinal pole pattern, and second transverse pole pattern; A third current flow path composed of the above-mentioned second longitudinal pole pattern and second transverse pole pattern; and A fourth current flow path composed of the above second transverse pole pattern; comprising, Vehicle glass equipped with an antenna.
In Article 5, The first current flow path radiates the first frequency band signal, and The second current flow path radiates the second frequency band signal, and The third current flow path radiates a signal in a frequency band higher than the first frequency band, and The above-mentioned fourth current flow path radiates a signal in a frequency band higher than the frequency band of the signal according to the above-mentioned third current flow path, Vehicle glass equipped with an antenna.
In Article 1, The above-mentioned first frequency band includes a frequency of 1.5 GHz, and The above second frequency band includes a frequency of 700 MHz, and The above antenna pattern is an antenna for transmitting and receiving GNSS (Global Navigation Satellite System) signals, Vehicle glass equipped with an antenna.
In Article 1, The above-mentioned vehicle glass is, A polymer bonding layer disposed on top of the metal thin film layer; and A double-bonded glass further comprising: a second glass layer bonded to the first glass layer and the metal thin film layer by the polymer bonding layer; Vehicle glass equipped with an antenna.
In Article 8, The second glass layer above is, A metal thin film layer is spaced apart from the first glass layer by a predetermined distance in the longitudinal direction to form an area in which at least a portion of the metal thin film layer is not covered by the second glass layer, and A connector for feeding power to the antenna pattern is connected to an area of the metal thin film layer not covered by the second glass layer. Vehicle glass equipped with an antenna.
In Article 9, The above antenna pattern is, It includes at least one CPW feed patch for coplanar waveguide (CPW) feeding, and The area of the metal thin film layer not covered by the second glass layer is formed in at least a part of the CPW feed patch, Vehicle glass equipped with an antenna.

Description

Automotive glass equipped with an antenna The present invention relates to equipment and structures for wireless communication and vehicles, and more specifically, to vehicle glass equipped with an antenna. Wireless communication technology for the transmission and reception of information continues to advance. In particular, antenna devices are required to transmit or receive signals for wireless communication, and various types and methods of antenna devices have been developed to achieve higher performance. Meanwhile, in the automotive sector as well, various wireless communication technologies are being utilized to transmit and receive vehicle-related information in response to advancements in information and communication technology. Previously, only low-level radio transmission and reception technologies, such as radio, were equipped in vehicles; however, recently, there has been a significant increase in demand for vehicles to transmit and receive large amounts of information with various entities, such as other vehicles, surrounding objects, infrastructure, or base stations, as referred to by the term V2X. Furthermore, regarding wireless communication methods for transmitting and receiving vehicle information, there is an increasing number of cases utilizing not only short-range communication systems like Wi-Fi but also global wireless communication systems such as 3GPP LTE (4G), 5G, and 6G. To support signal transmission and reception using such various communication systems, various types of antenna devices have been equipped in vehicles. Due to the radio wave blocking characteristics of the vehicle body, additional antenna structures formed integrally on the exterior of the vehicle body, such as the shark fin antenna shown in Fig. 1, have traditionally been mainly adopted. However, since such external antennas have a negative impact on the aesthetics of the vehicle, various methods have been proposed to reduce the aesthetic disparity. As an example, the need for glass antennas installed on the vehicle's glass has emerged. However, conventional proposals for antennas installed on vehicle glass are limited to merely transmitting and receiving radio signals, or even if antennas supporting high-capacity communication are proposed conceptually, they are limited to the form of film antennas attached to vehicle glass at an experimental level and fail to provide a solution applicable to the mass production of vehicle glass that can be used in actual vehicles. FIG. 1 is an example of a shark-fin antenna for a vehicle according to the prior art. FIG. 2 is an example diagram of an antenna device provided on a vehicle glass. FIG. 3 shows a layer structure of a vehicle glass equipped with an antenna according to one embodiment of the present invention. FIG. 4 is an example diagram of a misalignment-based connector connection structure according to one aspect of the present invention. FIG. 5 is an example of an embodiment of a connector connection structure for a vehicle glass equipped with an antenna according to one embodiment of the present invention. FIG. 6 is an example of a GNSS (Global Navigation Satellite System) antenna pattern that can be applied to a vehicle glass according to one embodiment of the present invention. Figure 7 shows the current flow path of the antenna pattern of Figure 6. Figure 8 shows the S-parameters measured according to the antenna pattern of Figure 6. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and/or" includes a combination of a plurality of related described items or any of a plurality of related described items. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression inclu