WO-2026095172-A1 - VEHICLE GLASS HAVING ANTENNA

WO2026095172A1WO 2026095172 A1WO2026095172 A1WO 2026095172A1WO-2026095172-A1

Abstract

Provided is a vehicle glass having an antenna. The vehicle glass comprises: a first glass layer; and a metal thin film layer disposed on the first glass layer and having an antenna pattern. Here, the antenna pattern comprises: a first monopole antenna pattern extending from a feeding line in the longitudinal direction to radiate a predetermined first frequency band signal; a first transverse branch pattern extending from the first monopole antenna pattern to a first transverse side surface; and a second monopole antenna pattern extending from a point farther away from a feeding unit than a connection point between the first monopole antenna pattern and the first transverse branch pattern, to a second transverse side surface, and radiating a second frequency band signal lower than the first frequency band.

Inventors

HONG, WON BIN
KIM, SOO MIN
CHO, SEONG DAE
PARK, SANG JIN
KIM, KYUNG MIN
BOK, Jin Bi
KIM, MIN KYUNG

Assignees

주식회사 케이씨씨글라스
포항공과대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20241128
Priority 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 first monopole antenna pattern to a first transverse side; A second monopole antenna pattern extending laterally to a second side at a point spaced further from the feed than the connection point of the first transverse branch pattern of the first monopole antenna pattern, 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 second monopole antenna 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 second transverse pole pattern comprising: a first end coupled to a second end of the first longitudinal pole pattern, extending transversely toward the first monopole antenna pattern, and having a second end positioned spaced apart from the first monopole antenna pattern by a predetermined distance; Vehicle glass equipped with an antenna.
In Article 2, The length of the first monopole antenna pattern above is, twice 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 seven times the length of the first transverse branch pattern, and The length of the first longitudinal pole pattern is the same as the length of the first transverse branch pattern, and The length of the second transverse pole pattern is 6.5 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, and second transverse pole pattern; A third current flow path composed of the above-mentioned first monopole antenna pattern; A fourth current flow path composed of the first transverse branch pattern and the first transverse pole pattern; and A fifth current flow path composed of the first monopole antenna pattern and the first 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 and fifth current flow path radiate a signal in a frequency band lower than the first frequency band and higher than the second frequency band signal, Vehicle glass equipped with an antenna.
In Article 1, The first frequency band above includes a frequency of 2.4 GHz, and The above second frequency band includes a frequency of 700 MHz, and The above antenna pattern is a dual-band antenna for transmitting and receiving signals in accordance with 3GPP 4G standards, 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 3GPP 4G dual-band antenna pattern that can be applied to 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 includes the plural expression