Antenna module configured in vehicle

Abstract

The antenna assembly includes: a first dielectric substrate forming a transparent region and formed with a first conductive pattern and a second conductive pattern; and a second dielectric substrate forming an opaque region and formed with a ground conductive pattern and a feed pattern. The ground conductive pattern of the second dielectric substrate may include a first region and a second region. The first region of the ground conductive pattern may be connected to a ground of a coaxial cable, and a portion of the first region may be connected to the second conductive pattern. The second region of the ground conductive pattern may be configured to operate with an ultrahigh frequency band radiator that is a frequency band higher than the operating frequency band of the first conductive pattern and the second conductive pattern.

Description

Technical Field

[0001] The present disclosure relates to a transparent antenna configured for a vehicle. Certain embodiments relate to an antenna assembly implemented with a transparent material so that the antenna area cannot be identified on the vehicle glass. Background Art

[0002] Vehicles can perform wireless communication services with other vehicles or surrounding objects, infrastructure or base stations. In this regard, a variety of communication services can be provided by a wireless communication system that applies LTE communication technology or 5G communication technology. On the other hand, a portion of the LTE frequency band can be allocated to provide 5G communication services.

[0003] On the other hand, since the vehicle body and the roof are formed of metal materials, there is a problem of blocking radio waves. Therefore, an additional antenna structure can be arranged on the upper part of the vehicle body or the roof. Alternatively, when the antenna structure is arranged on the lower part of the vehicle body or the roof, the part of the vehicle body or the roof corresponding to the antenna arrangement area can be formed of a non-metallic material.

[0004] However, from the design point of view, the vehicle body or the roof needs to be formed in one piece. In this case, the appearance of the vehicle body or the roof may be formed of a metal material. Therefore, there is a problem that the vehicle body or the roof may cause the antenna efficiency to be greatly reduced.

[0005] In order to increase the communication capacity without changing the exterior design of the vehicle, a transparent antenna can be placed on the glass of the vehicle window. However, there is a problem that the electrical loss of the transparent material antenna deteriorates the antenna radiation efficiency and impedance bandwidth characteristics.

[0006] If the antenna pattern is formed on a dielectric substrate with a metal mesh structure in which metal wires are connected to each other, a transparent antenna in which the metal wires cannot be distinguished by the naked eye can be realized. However, if the metal mesh structure is not formed in the dielectric region surrounding the antenna region in which the antenna pattern is formed, there is a problem that the antenna region and the dielectric region are distinguished by the naked eye, resulting in a difference in visibility.

[0007] Although a dummy grid may be arranged in the dielectric region to solve this problem, there is a problem that the arrangement of the dummy grid causes interference with the antenna pattern, resulting in degradation of antenna performance.

[0008] On the other hand, a vehicle transparent antenna in which a transparent material antenna is arranged on the vehicle glass can be configured to be electrically connected to a feeding pattern arranged on an additional dielectric substrate. In this regard, the vehicle transparent antenna is designed to be arranged on the glass panel. The performance of the antenna itself is mainly based on the performance, so there is a problem that it cannot fully reflect the actual vehicle attachment environment. There is a problem that the antenna resonance characteristics and antenna performance are reduced depending on the location where the vehicle transparent antenna is attached, the metal chassis of the vehicle body, and the direction of the cable arranged for feeding. Summary of the invention

[0009] Problems to be solved by the invention

[0010] The purpose of this specification is to solve the above problems and other problems. In addition, another purpose of this specification is to provide a broadband transparent antenna assembly that can be configured on vehicle glass.

[0011] Another object of the present specification is to improve the antenna efficiency of a broadband transparent antenna assembly that can be configured on vehicle glass.

[0012] Another object of the present specification is to provide a broadband antenna structure made of a transparent material that can reduce feed loss and improve antenna efficiency while operating in a broadband manner.

[0013] Another object of the present specification is to provide a broadband antenna design method that takes into account the actual vehicle attachment environment by analyzing the impact caused by the metal chassis of the vehicle in addition to the glass panel and the antenna performance changes based on the cable structure.

[0014] Another object of the present specification is to provide a CPW FPCB stub structure to improve the phenomenon of antenna performance degradation in the UHB band of 4 GHz to 6 GHz caused by a coaxial cable formed perpendicularly to the CPW feed line.

[0015] Technical solutions to the problem

[0016] The antenna assembly of the present specification for achieving the above purpose or another purpose includes: a first dielectric substrate, forming a transparent area, formed with a first conductive pattern and a second conductive pattern; and a second dielectric substrate, forming an opaque area, formed with a ground conductive pattern and a feed pattern. The ground conductive pattern of the second dielectric substrate may include a first area and a second area. The first area of ​​the ground conductive pattern may be connected to the ground of a coaxial cable, and a portion of the first area may be connected to the second conductive pattern. The second area of ​​the ground conductive pattern may be configured to act as a radiator of an ultra-high frequency band (UHB) higher than the operating frequency band of the first conductive pattern and the second conductive pattern.

[0017] According to an embodiment, the first conductive pattern may include a first portion and a second portion perpendicular to the first portion. The second conductive pattern may include a third portion and a fourth portion perpendicular to the third portion. The second portion of the first conductive pattern may be connected to a feed pattern, and the fourth portion of the second conductive pattern may be connected to the first region of the ground conductive pattern.

[0018] According to an embodiment, a signal line corresponding to one end of the coaxial cable may be connected to the feed pattern. The ground of the coaxial cable may be connected to a contact portion formed concavely to accommodate the coaxial cable, and the contact portion may be configured in a first sub-region of the first region of the ground conductive pattern.

[0019] According to an embodiment, the first region of the ground conductive pattern may include the first sub-region and the second sub-region. The second length of the second sub-region in the first axial direction may be formed to be longer than the first length of the first sub-region in the first axial direction. The second width of the second sub-region in the second axial direction may be formed to be narrower than the first width of the first sub-region in the second axial direction. The coaxial cable may be configured to be separated from the second sub-region.

[0020] According to an embodiment, the second portion of the first conductive pattern may be connected to the signal line of the coaxial cable using the feed pattern. The fourth portion of the second conductive pattern may be connected to the ground of the coaxial cable using the first sub-region of the second region of the ground conductive pattern.

[0021] According to an embodiment, the second region of the ground conductive pattern may include: a third sub-region, which is configured to be separated from one side end of the feeding pattern and is formed into a rectangular shape having a first width in the second axis direction; and a fourth sub-region, which is connected to the third sub-region and is formed into a rectangular shape having a third width narrower than the first width in the second axis direction.

[0022] According to an embodiment, the second region of the ground conductive pattern may include: a third sub-region spaced apart from one side end of the feeding pattern and formed in a triangular shape having a slope of a specified angle; and a fourth sub-region connected to the third sub-region and formed in a rectangular shape.

[0023] According to an embodiment, a length from the contact portion to an end of the fourth subregion of the second region of the ground conductive pattern may be formed to range between 0.5 times and 1 times a specific wavelength corresponding to a specific frequency of the UHB.

[0024] According to an embodiment, the second region of the ground conductive pattern may be disposed at a lower region of the second portion of the first conductive pattern.

[0025] According to an embodiment, the first conductive pattern and the second conductive pattern may be formed to a first height in the second axial direction. The fourth portion of the second conductive pattern may include a groove region where the conductive pattern is removed by a second height. The second height of the groove region may be formed to be more than 0.5 times the first height.

[0026] According to an embodiment, the first conductive pattern and the second conductive pattern may operate in a dipole antenna mode in the first frequency band. The first conductive pattern and the second conductive pattern may be formed to have an asymmetrical structure. The upper end and the lower end of the first part of the first conductive pattern may be formed in a step shape, and the lower end of the third part of the second conductive pattern may be formed in a step shape.

[0027] According to an embodiment, the first conductive pattern may operate in a monopole antenna mode in a second frequency band. The second region of the ground conductive pattern may operate as a radiator in a third frequency band. The second frequency band may be set larger than the first frequency band, and the third frequency band may be set larger than the second frequency band.

[0028] According to an embodiment, the first conductive pattern and the second conductive pattern may be formed in a metal mesh shape having a plurality of open areas on the first dielectric substrate. The first conductive pattern and the second conductive pattern may form a radiator area. The first conductive pattern and the second conductive pattern may be formed in a CPW (Coplanar Wavelength) structure on the first dielectric substrate.

[0029] According to an embodiment, the outside portion of the radiator region of the antenna assembly on the first dielectric substrate may include a plurality of dummy grid patterns. The plurality of dummy grid patterns may not be connected to the feed pattern and the ground conductive pattern. The plurality of dummy grid patterns may be separated from each other.

[0030] A vehicle in another aspect of the present specification includes: a metal frame having an opening formed therein; a glass panel including a transparent area and an opaque area; and an antenna assembly disposed on the glass panel. The antenna assembly includes: a first dielectric substrate forming a transparent area, a first conductive pattern and a second conductive pattern formed therein; and a second dielectric substrate forming an opaque area, a ground conductive pattern and a feed pattern formed therein. The ground conductive pattern of the second dielectric substrate may include a first area and a second area. The first area of ​​the ground conductive pattern may be connected to the ground of a coaxial cable, and a portion of the first area may be connected to the second conductive pattern. The second area of ​​the ground conductive pattern may be configured to act as a radiator of an ultra-high frequency band (UHB) having a frequency band higher than the operating frequency bands of the first conductive pattern and the second conductive pattern.

[0031] According to an embodiment, the first conductive pattern may include a first portion and a second portion perpendicular to the first portion. The second conductive pattern may include a third portion and a fourth portion perpendicular to the third portion. The second portion of the first conductive pattern may be connected to a feed pattern, and the fourth portion of the second conductive pattern may be connected to the first region of the ground conductive pattern.

[0032] According to an embodiment, a signal line corresponding to one end of the coaxial cable may be connected to the feed pattern. The ground of the coaxial cable may be connected to a contact portion formed concavely to accommodate the coaxial cable, and the contact portion may be configured in a first sub-region of the second region of the ground conductive pattern.

[0033] According to an embodiment, the first region of the ground conductive pattern may include the first sub-region and the second sub-region. The second length of the second sub-region in the first axial direction may be formed to be longer than the first length of the first sub-region in the first axial direction. The second width of the second sub-region in the second axial direction may be formed to be narrower than the first width of the first sub-region in the second axial direction. The coaxial cable may be configured to be separated from the second sub-region.

[0034] According to an embodiment, the second portion of the first conductive pattern may be connected to the signal line of the coaxial cable using the feed pattern. The fourth portion of the second conductive pattern may be connected to the ground of the coaxial cable using the first sub-region of the second region of the ground conductive pattern.

[0035] According to an embodiment, the second region of the ground conductive pattern may include: a third sub-region spaced apart from one side end of the feeding pattern and formed in a triangular shape having a slope of a specified angle; and a fourth sub-region connected to the first sub-region and formed in a rectangular shape.

[0036] According to an embodiment, a length from the contact portion to an end of the fourth subregion of the second region of the ground conductive pattern may be formed to range from 0.5 times to 1 times a specific wavelength corresponding to a specific frequency of the first frequency band.

[0037] According to an embodiment, the first conductive pattern and the second conductive pattern may operate in a dipole antenna mode in the first frequency band. The first conductive pattern and the second conductive pattern may be formed to have an asymmetrical structure. The upper end and the lower end of the first part of the first conductive pattern may be formed in a step shape, and the lower end of the third part of the second conductive pattern may be formed in a step shape. The first conductive pattern may operate in a monopole antenna mode in the second frequency band. The second region of the ground conductive pattern may operate as a radiator in the third frequency band. The second frequency band may be set to be larger than the first frequency band, and the third frequency band may be set to be larger than the second frequency band.

[0038] Effects of the Invention

[0039] Next, the technical effects of the broadband transparent antenna assembly that can be configured on the vehicle glass as described above will be described.

[0040] According to the present specification, a broadband transparent antenna assembly having a conductive pattern and an FPCB stub structure that can be configured on vehicle glass is provided, thereby enabling 4G / 5G broadband wireless communication in the vehicle.

[0041] According to the present specification, the conductive pattern and the FPCB stub shape in a broadband transparent antenna assembly that can be configured on vehicle glass can be optimized, and the antenna efficiency can be improved through an antenna structure with an asymmetrical structure.

[0042] According to the present specification, a broadband antenna structure made of a transparent material can be realized that can reduce feed loss and improve antenna efficiency by setting antenna operation modes differently for each frequency band.

[0043] According to the present specification, a broadband antenna structure taking into account an actual vehicle attachment environment can be provided by analyzing the influence caused by a metal chassis of a vehicle other than a glass panel and a change in antenna performance based on a cable structure.

[0044] According to the present specification, a CPW FPCB stub structure can be provided to improve a phenomenon in which antenna performance is degraded in a UHB band of 4 GHz to 6 GHz due to a coaxial cable formed perpendicularly to a CPW feed line.

[0045] According to the present specification, a transparent antenna structure capable of minimizing antenna performance variation and transparency differences between an antenna area and a surrounding area and capable of wireless communication in 4G and 5G frequency bands.

[0046] The following detailed description will further clarify the scope of the additional application of this specification. However, since a person skilled in the art can clearly understand the various changes and modifications within the concept and scope of the present invention, it should be understood that the specific embodiments of the preferred embodiments described in detail and this specification are only examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 FIG. 1 is a diagram showing glass of a vehicle on which an antenna structure according to an embodiment of the present specification can be arranged.

[0048] Figure 2a Indicated in Figure 1 A front view of a vehicle in which antenna assemblies are disposed at different regions of a front glass of the vehicle.

[0049] Figure 2b Indicated in Figure 1 A perspective view of the interior front of a vehicle in which antenna assemblies are arranged at different areas of a front glass of the vehicle.

[0050] Figure 2c Indicated in Figure 1 A side perspective view of a vehicle with an antenna assembly configured on an upper glass of the vehicle.

[0051] Figure 3 Indicates the type of V2X application.

[0052] Figure 4 This is a block diagram for explaining a vehicle and an antenna system mounted on the vehicle according to an embodiment of the present specification.

[0053] Figure 5a to Figure 5c This specification shows a configuration in which the antenna assembly is disposed on a vehicle glass.

[0054] Figure 6a Various embodiments of the frit pattern of this specification are shown. Figure 6b and Figure 6c A transparent antenna pattern according to an embodiment and a structure in which the transparent antenna pattern is arranged on vehicle glass are shown.

[0055] Figure 7a Showing the front view and cross-sectional view of the transparent antenna assembly of the present specification. Figure 7b It is a diagram showing the mesh structure of the metal mesh radiator area and the virtual metal mesh area according to the embodiment.

[0056] Figure 8a Represents the layered structure of the antenna module and the feeding module. Figure 8b It represents a layered structure where the antenna module and the feeding structure are combined and an opaque substrate including the combined portion.

[0057] Figure 9a The figure shows the bonding structure of the transparent antenna disposed in the transparent area and the frit area of ​​the vehicle glass.

[0058] Figure 9b It will form Figure 9a A magnified front view of the area where the transparent antenna glass is bonded to the vehicle's main structure. Fig.9c Indicates observation from different positions Figure 9b A cross-sectional view of the combined structure of vehicle glass and main structure.

[0059] Fig.10 2 is a diagram showing a stacked structure of an antenna assembly according to an embodiment and attachment areas to a vehicle glass and a vehicle frame.

[0060] Fig.11 Shows front and side views of an antenna assembly that can be attached to the front glass of a vehicle.

[0061] Figures 12a to 12c 1 is a diagram comparing cable structures and reflection coefficient characteristics of antenna assemblies according to embodiments.

[0062] Fig.13 Shows Figures 12a to 12c Electric field distribution diagram of the structure of the antenna component.

[0063] Fig.14a This is a diagram comparing a first structure of an embodiment arranged perpendicularly to a metal frame of a vehicle and a second structure of an embodiment arranged parallel to the metal frame of the vehicle.

[0064] Fig.14b It is a comparison Fig.14a Graph of the antenna efficiency of the first structure and the second structure.

[0065] Fig.15a A front view of the antenna assembly of the present specification is shown.

[0066] Fig.15b An enlarged view of the antenna assembly of FIG. 14 is shown configured adjacent to a metal frame.

[0067] Fig.16 Shown in Fig.15a A structure in which a signal line and a ground of a coaxial cable are connected to a feed pattern and a ground conductive pattern in an antenna assembly.

[0068] Fig.17a FIG. 1 is a diagram showing a third conductive pattern formed on an upper portion of a second region of a ground conductive pattern.

[0069] Fig.17b 2 is a diagram in which the second region of the ground conductive pattern is formed into a rectangular structure having widths different from each other.

[0070] Fig.17c is a diagram in which the second region of the ground conductive pattern is formed of a triangular structure and a rectangular structure.

[0071] Fig.18a It is shown Figures 17a to 17c Plot of the reflection coefficient characteristics of the CPW antenna structure.

[0072] Fig.18b It is shown Figures 17a to 17c Figure 2. Efficiency characteristics of the CPW antenna structure.

[0073] Fig.19a A plurality of antenna elements is shown. Figure 12b The antenna assembly is configured on the structure of the vehicle glass.

[0074] Fig.19b A plurality of antenna elements is shown. Figure 12b The antenna assembly is formed in a structure of a glass panel configured inside a metal frame.

[0075] Fig.19c yes Fig.19b A side perspective view of an exploded state of a combined structure of a metal frame and a glass panel forming an antenna assembly.

[0076] Fig.20a Shows Fig.19a Reflection coefficient and efficiency characteristics of antenna components.

[0077] Fig.20b Shows Fig.19b Reflection coefficient and efficiency characteristics of the antenna assembly adjacent to the metal frame.

[0078] Fig.21a A plurality of antenna elements is shown. Fig.12c The antenna assembly is configured in a structure of a vehicle glass disposed inside a metal frame.

[0079] Figure 21b Shows Fig.21a Reflection coefficient and efficiency characteristics of antenna components.

[0080] Fig.22a and Figure 22bThe process flow of combining the antenna assembly of the embodiment with a glass panel is shown.

[0081] Fig.23 This shows a configuration in which a plurality of antenna modules disposed at different positions of the vehicle of this specification are combined with other components of the vehicle. DETAILED DESCRIPTION

[0082] The embodiments disclosed in this specification are described in detail below with reference to the accompanying drawings. Here, the same or similar constituent elements are given the same figure marks regardless of the figure numbers, and repeated descriptions thereof will be omitted. The suffixes "module" and "unit" used in the following description for the constituent elements are only given or mixed for the convenience of writing the specification, and they themselves do not have mutually distinguishing meanings or functions. In addition, in the process of describing the embodiments disclosed in this specification, if it is determined that the specific description of the relevant known technology will cause confusion with the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only for the purpose of facilitating the understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification should not be limited by the attached drawings, but should be understood as covering all changes, equivalents and even substitutes included in the ideas and technical scope of the present invention.

[0083] Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from other components.

[0084] If a certain component is mentioned as being "connected" or "coupled" to another component, it may be directly connected to or coupled to the other component, but it can also be understood that there are other components between them. Conversely, if a certain component is mentioned as being "directly connected" or "directly coupled" to another component, it should be understood that there are no other components between them.

[0085] Unless the context clearly indicates otherwise, expressions in the singular shall include expressions in the plural.

[0086] In the present application, terms such as "including" or "having" are only used to specify the existence of features, numbers, steps, operations, constituent elements, parts or their combinations recorded in the specification, and are not intended to preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, constituent elements, parts or their combinations.

[0087] The antenna system described in this specification can be mounted on a vehicle. The configuration and operation of the embodiments described in this specification can also be applied to a communication system, i.e., an antenna system, mounted on a vehicle. In this regard, the antenna system mounted on a vehicle may include a plurality of antennas and a transceiver circuit and a processor for controlling the plurality of antennas.

[0088] Hereinafter, an antenna assembly (antenna module) that can be placed on a vehicle window and a vehicle antenna system including the antenna assembly are described. Herein, the antenna assembly refers to a structure in which a conductive pattern is bonded to a dielectric substrate, and may also be referred to as an antenna module.

[0089] Regarding this, Figure 1 FIG. 1 is a diagram showing a glass of a vehicle on which an antenna structure can be configured according to an embodiment of the present specification. Figure 1 The vehicle 500 may include a front glass 310, a door glass 320, a rear glass 330, and a corner window glass 340. On the other hand, the vehicle 500 may further include an upper glass 350 formed at a roof in an upper region.

[0090] Therefore, the glass constituting the window of the vehicle 500 may include a front glass 310 arranged in the front area of ​​the vehicle, a door glass 320 arranged in the door area of ​​the vehicle, and a rear glass 330 arranged in the rear area of ​​the vehicle. On the other hand, the glass constituting the window of the vehicle 500 may also include a corner window glass 340 arranged in a part of the door area of ​​the vehicle. In addition, the glass constituting the window of the vehicle 500 may also include an upper glass 350, which is separated from the rear glass 330 and is arranged in the upper area of ​​the vehicle. Therefore, each glass constituting the window of the vehicle 500 may also be referred to as a window.

[0091] The front glass 310 prevents the wind from the front direction from blowing into the interior of the vehicle, and thus can be called a front windshield. The front glass 310 can be formed in a double-layer joint structure with a thickness of about 5.0 to 5.5 mm. The front glass 310 can be formed in a joint structure of glass / anti-shatter film / glass.

[0092] The door glass 320 may be formed of a double-layered joint structure or a single-layered compressed glass. The rear glass 330 may be formed of a double-layered joint structure or a single-layered compressed glass having a thickness of about 3.5 to 5.5 mm. In the rear glass 330, a distance is required between the hot wire, the AM / FM antenna, and the transparent antenna. The corner window glass 340 may be formed of a single-layered compressed glass having a thickness of about 3.5 to 4.0 mm, but is not limited thereto.

[0093] The size of the corner window glass 340 varies according to the type of vehicle, and the size of the corner window glass 340 may be smaller than the size of the front glass 310 and the size of the rear glass 330 .

[0094] Hereinafter, the structure in which the antenna assembly of this specification is arranged in different regions of the front glass of the vehicle will be described. The antenna assembly attached to the vehicle glass can be implemented as a transparent antenna. Figure 2a Indicated in Figure 1 A front view of a vehicle in which antenna assemblies are disposed at different regions of a front glass of the vehicle. Figure 2b Indicated in Figure 1 A perspective view of the interior front of a vehicle in which antenna assemblies are arranged at different areas of a front glass of the vehicle. Figure 2c Indicated in Figure 1 A side perspective view of a vehicle with an antenna assembly configured on an upper glass of the vehicle.

[0095] Reference Figure 2a , a front view of a vehicle 500 shows a configuration of a transparent antenna for a vehicle that can be configured with the present specification. A pane assembly 22 may include an antenna in an upper region 310a. The pane assembly 22 may include an antenna in an upper region 310a, an antenna in a lower region 310b, and / or an antenna in a side region 310c. In addition, the pane assembly 22 may include a translucent pane glass 26 formed of a dielectric substrate. The antenna in the upper region 310a, the antenna in the lower region 310b, and / or the antenna in the side region 310c are configured to support at least one of various communication systems.

[0096] The antenna module 1100 can be implemented in the upper area 310a, or the lower area 310b or the side area 310c of the front glass 310. In the case where the antenna module 1100 is configured in the lower area 310b of the front glass 310, the antenna module 1100 can be extended to the main body 49 of the lower area of ​​the translucent window glass 26. The main body 49 of the lower area of ​​the translucent window glass 26 can be implemented to have lower transparency than other parts. In the main body 49 of the lower area of ​​the translucent window glass 26, a part of the feed part or other interface lines can be implemented. The connector assembly 74 can be implemented in the main body 49 of the lower area of ​​the translucent window glass 26. The main body 49 of the lower area can constitute a vehicle body of a metal material.

[0097] Reference Figure 2b The antenna assembly 1000 may include a telematics control unit (TCU) 300 and an antenna module 1100. The antenna module 1100 may be disposed in different regions of the vehicle glass.

[0098] Reference Figure 2a and Figure 2b , the upper area 310a, the lower area 310b and / or the side area 310c of the vehicle glass may be configured with an antenna assembly. Figure 2a to Figure 2c Antenna assemblies may be disposed on the front glass 310 , the rear glass 330 , the corner window glass 340 , and the upper glass 350 of the vehicle.

[0099] Reference Figure 2a to Figure 2c , the antenna in the upper area 310a of the front glass 310 of the vehicle can be configured to operate in the LB (low band), MB (mid band), HB (high band) and 5G Sub6 bands of the 4G / 5G communication system. The antenna in the lower area 310b and / or the antenna in the side area 310c can also be configured to operate in the LB, MB, HB and 5G Sub6 bands of the 4G / 5G communication system. In the rear glass 330 of the vehicle, the antenna structure 1100b can also be configured to operate in the LB, MB, HB and 5G Sub6 bands of the 4G / 5G communication system. In the upper glass 350 of the vehicle, the antenna structure 1100c can also be configured to operate in the LB, MB, HB and 5G Sub6 bands of the 4G / 5G communication system. In the corner window glass 350 of the vehicle, the antenna structure 1100d can also be configured to operate in the LB, MB, HB and 5G Sub6 bands of the 4G / 5G communication system.

[0100] At least a portion of the outer contour area of ​​the front glass 310 of the vehicle may be formed by the translucent window glass 26. The translucent window glass 26 may include: a first portion, formed with a portion of the antenna and the feeder; and a second portion, formed with a portion of the feeder and a dummy structure. In addition, the translucent window glass 26 may also include a dummy area where no conductive pattern is formed. As an example, the transparent area of ​​the window glass assembly 22 may be formed to be transparent to ensure light transmission and field of view.

[0101] Although the example in which the conductive pattern can be formed in a part of the front glass 310 is described, it can be extended to be formed in Figure 1 The side glass 320, the rear glass 330 and any other glass structures of the vehicle 500 can be seen by a passenger or a driver through the window glass assembly 22. In addition, the passenger or the driver can see the road and the surrounding environment without being obstructed by the antenna of the upper area 310a, the antenna of the lower area 310b and / or the antenna of the side area 310c.

[0102] Vehicle 500 may be configured to communicate with pedestrians, surrounding infrastructure, and / or servers in addition to surrounding vehicles. Figure 3 Indicates the type of V2X application. Figure 3 V2X (Vehicle-to-Everything) communication includes V2V (Vehicle-to-Vehicle) which refers to the communication between vehicles, V2I (Vehicle to Infrastructure) which refers to the communication between vehicles and eNB or RSU (Road Side Unit), V2P (Vehicle-to-Pedestrian) which refers to the communication between vehicles and terminals carried by individuals (pedestrians, cyclists, vehicle drivers or passengers), V2N (vehicle-to-network), and other communications between vehicles and all individuals.

[0103] on the other hand, Figure 4 This is a block diagram for explaining a vehicle and an antenna system mounted on the vehicle according to an embodiment of the present specification.

[0104] The vehicle 500 may include a communication device 400 and a processor 570. The communication device 400 may correspond to a telematics control unit of the vehicle 500.

[0105] The communication device 400 is a device for performing communication with an external device. Here, the external device may be another vehicle, a mobile terminal or a server. In order to perform communication, the communication device 400 may include at least one of a transmitting antenna, a receiving antenna, an RF (Radio Frequency) circuit and an RF element capable of implementing various communication protocols. The communication device 400 may include a short-range communication unit 410, a location information unit 420, a V2X communication unit 430, an optical communication unit 440, a 4G wireless communication module 450 and a 5G wireless communication module 460. The communication device 400 may include a processor 470. According to an embodiment, the communication device 400 may also include other constituent elements in addition to the described constituent elements, or may not include a part of the described constituent elements.

[0106] The 4G wireless communication module 450 and the 5G wireless communication module 460 can perform wireless communication with more than one communication system through one or more antenna modules. The 4G wireless communication module 450 can send and / or receive signals with a device in the first communication system through a first antenna module. In addition, the 5G wireless communication module 460 can send and / or receive signals with a device in the second communication system through a second antenna module. The 4G wireless communication module 450 and the 5G wireless communication module 460 can also be physically implemented as an integrated communication module. Here, the first communication system can be an LTE communication system, and the second communication system can be a 5G communication system. However, the first communication system and the second communication system are not limited to this, and can be extended to any communication system that is different from each other.

[0107] The processor of the device in the vehicle 500 can be implemented by an MCU (Micro Control Unit) or a modem. The processor 470 of the communication device 400 is equivalent to a modem, and the processor 470 can be implemented as an integrated modem. The processor 470 can obtain surrounding information from other surrounding vehicles, objects, or infrastructure through wireless communication. The processor 470 can use the acquired surrounding information to perform vehicle control.

[0108] The processor 570 of the vehicle 500 may be a processor of a CAN (Car Area Network) or an ADAS (Advanced Driver Assistance System), but is not limited thereto. When the vehicle 500 is implemented in a distributed control manner, the processor 570 of the vehicle 500 may be replaced by a processor of each device.

[0109] On the other hand, the antenna module configured inside the vehicle 500 may include a wireless communication unit. The 4G wireless communication module 450 can transmit and receive 4G signals with a 4G base station through a 4G mobile communication network. At this time, the 4G wireless communication module 450 can transmit more than one 4G transmission signal to the 4G base station. In addition, the 4G wireless communication module 450 can receive more than one 4G reception signal from the 4G base station. In this regard, uplink (UL: Up-Link) multiple-input multiple-output (MIMO: Multi-Input Multi-Output) can be performed by transmitting a plurality of 4G transmission signals to the 4G base station. In addition, downlink (DL: Down-Link) multiple-input multiple-output (MIMO: Multi-Input Multi-Output) can be performed by receiving a plurality of 4G reception signals from the 4G base station.

[0110] The 5G wireless communication module 460 can transmit and receive 5G signals with the 5G base station through the 5G mobile communication network. Here, the 4G base station and the 5G base station can be non-independent (NSA: Non-Stand-Alone) structures. For example, the 4G base station and the 5G base station can be configured as a non-independent (NSA: Non Stand-Alone) structure. Alternatively, the 5G base station can be configured as an independent (SA: Stand-Alone) structure at a location different from the 4G base station. The 5G wireless communication module 460 can transmit and receive 5G signals with the 5G base station through the 5G mobile communication network. At this time, the 5G wireless communication module 460 can transmit more than one 5G transmission signal to the 5G base station. In addition, the 5G wireless communication module 460 can receive more than one 5G reception signal from the 5G base station. At this time, the 5G frequency band can use the same frequency band as the 4G frequency band, and it is called LTE reconfiguration (re-farming). On the other hand, as a 5G frequency band, the Sub6 frequency band, which is a frequency band below 6GHz, can be used. On the contrary, in order to perform broadband high-speed communication, the millimeter wave (mmWave) frequency band can be used as the 5G frequency band. In the case of using the millimeter wave (mmWave) frequency band, electronic devices can perform beam forming to expand the communication coverage with the base station.

[0111] On the other hand, regardless of the 5G frequency band, in order to increase the transmission speed, a larger number of multiple-input multiple-output (MIMO) can be supported in the 5G communication system. In this regard, uplink (UL: Up-Link) MIMO can be performed by transmitting a plurality of 5G transmission signals to a 5G base station. In addition, downlink (DL: Down-Link) MIMO can be performed by receiving a plurality of 5G reception signals from a 5G base station.

[0112] On the other hand, through the 4G wireless communication module 450 and the 5G wireless communication module 460, it is possible to be in a dual connection (DC: Dual Connectivity) state with the 4G base station and the 5G base station. The dual connection with the 4G base station and the 5G base station as described above may be referred to as EN-DC (EUTRAN NR DC; Evolved Universal Terrestrial Radio Access Network New Wireless Dual Connection). On the other hand, if the 4G base station and the 5G base station are co-located structures, the throughput can be improved by heterogeneous carrier aggregation (inter-CA (Carrier Aggregation)). Therefore, if the 4G base station and the 5G base station are in the EN-DC state, the 4G reception signal and the 5G reception signal can be received simultaneously by the 4G wireless communication module 450 and the 5G wireless communication module 460. On the other hand, the 4G wireless communication module 450 and the 5G wireless communication module 460 can be used to perform close range communication between electronic devices (e.g., vehicles). In one embodiment, wireless communication can be performed in a V2V manner between vehicles without via a base station after resources are allocated.

[0113] On the other hand, in order to improve the transmission speed and converge the communication system, at least one of the 4G wireless communication module 450 and the 5G wireless communication module 460 and the Wi-Fi (Wireless High Fidelity) communication module 113 may be used to perform carrier aggregation (CA). In this regard, 4G+WiFi carrier aggregation (CA) may be performed using the 4G wireless communication module 450 and the Wi-Fi communication module 113. Alternatively, 5G+WiFi carrier aggregation (CA) may be performed using the 5G wireless communication module 460 and the Wi-Fi communication module.

[0114] On the other hand, the communication device 400 may realize a vehicle display device together with the user interface device. In this case, the vehicle display device may be named a telematics device or an AVN (Audio Video Navigation) device.

[0115] On the other hand, the broadband transparent antenna structure that can be configured on the glass of a vehicle of the present specification can be implemented by a single dielectric substrate on the same plane as the CPW feeder. In addition, the broadband transparent antenna structure that can be configured on the glass of a vehicle of the present specification can be implemented with a structure in which grounding is formed on both sides of the radiator, thereby forming a broadband structure.

[0116] The following describes the antenna components related to the broadband transparent antenna structure of this specification. Figure 5a to Figure 5cThis shows the configuration in which the antenna assembly of this specification is disposed on the vehicle glass. Figure 5a , the antenna assembly 1000 may include a first dielectric substrate 1010a and a second dielectric substrate 1010b. The first dielectric substrate 1010a may be implemented as a transparent substrate, and thus may be referred to as a transparent substrate 1010a. The second dielectric substrate 1010b may be implemented as an opaque substrate 1010b.

[0117] The glass panel 310 may include a transparent glass region 311 and an opaque region 312. The opaque region 312 of the glass panel 310 may be a frit region formed by a frit layer. The opaque region 312 may be formed to surround the transparent region 311. The opaque region 312 may be formed in an outer region of the transparent region 311. The opaque region 312 may form a boundary region of the glass panel 310.

[0118] The signal pattern formed on the dielectric substrate 1010 can be connected to the telematics control unit (TCU) 300 through a connector component 313 such as a coaxial cable. The telematics control unit (TCU) 300 can be configured inside the vehicle, but is not limited thereto. The telematics control unit (TCU) 300 can be configured in the dashboard inside the vehicle or in the roof area inside the vehicle, but is not limited thereto.

[0119] Figure 5b The antenna assembly 1000 is shown as being disposed in a partial region of the glass panel 310 . Figure 5c The structure in which the antenna assembly 1000 is arranged over the entire area of ​​the glass panel 310 is shown.

[0120] Reference Figure 5b and Figure 5c, the glass panel 310 may include a transparent area 311 and an opaque area 312. The opaque area 312 is a non-visible area whose transparency is below a specified level, and may be referred to as a frit area, or a BP (Black Printing) area, or a BM (Black Matrix) area. The opaque area 312, which is equivalent to the opaque area, may be formed to surround the transparent area 311. The opaque area 312 may be formed in an outer area of ​​the transparent area 311. The opaque area 312 may form a boundary area of ​​the glass panel 310. A second dielectric substrate 1010b or a heat plate 360a, 360b, which is equivalent to a feed substrate, may be arranged in the opaque area 312. The second dielectric substrate 1010b arranged in the opaque area 312 may be referred to as an opaque substrate. As Figure 5c As shown, when the antenna assembly 1000 is disposed on the entire area of ​​the glass panel 310 , the heating plates 360 a and 360 b may be disposed in the opaque area 312 .

[0121] Reference Figure 5b , the antenna assembly 1000 may include a first transparent dielectric substrate 1010a and a second dielectric substrate 1010b. Figure 5b and Figure 5c , the antenna assembly 1000 may include an antenna module 1100 formed of a conductive pattern and a second dielectric substrate 1010b. The antenna module 1100 may be formed by a transparent electrode portion and implemented as a transparent antenna module. The antenna module 1100 may be implemented by more than one antenna element. The antenna module 1100 may include a MIMO antenna and / or other antenna elements for wireless communication. Other antenna elements may include at least one of GNSS / radio / broadcast / WiFi / satellite communication / UWB (ultra-wideband), RKE (Remote Keyless Entry) antennas for vehicle applications.

[0122] Reference Figure 5a to Figure 5c , the antenna assembly 1000 can be connected to the telematics control unit (TCU) 300 through the connector component 313. The connector component 313 can be electrically connected to the TCU300 by forming a connector 313c at the end of the cable. The signal pattern of the second dielectric substrate 1010b formed on the antenna assembly 1000 can be connected to the TCU300 using the connector component 313 such as a coaxial cable. Through the connector component 313, the antenna module 1100 can be electrically connected to the TCU300. The TCU300 can be configured inside the vehicle, but is not limited to this. The TCU300 can be configured on the dashboard inside the vehicle or the roof area inside the vehicle, but is not limited to this.

[0123] On the other hand, when the transparent antenna assembly of the present specification is attached to the inside or surface of the glass panel 310 , the transparent electrode portion including the antenna pattern and the dummy pattern may be disposed in the transparent region 311 . Conversely, the opaque substrate portion may be disposed in the opaque region 312 .

[0124] The antenna assembly formed on the vehicle glass of the present specification can be configured in the transparent area and the opaque area. In this regard, Figure 6a Various embodiments of the frit pattern of this specification are shown. Figure 6b and Figure 6c A transparent antenna pattern according to an embodiment and a structure in which the transparent antenna pattern is arranged on vehicle glass are shown.

[0125] Reference Figure 6a (a), the frit pattern 312a can be formed as a metal pattern in a circular (or polygonal, elliptical) shape with a specified diameter. The frit pattern 312a can be configured in a two-dimensional structure along two axial directions. The frit pattern 312a can be formed in an offset structure in which the center points between the patterns forming adjacent rows are separated by a specified interval.

[0126] Reference Figure 6a In (b), the frit pattern 312b may be formed in a rectangular pattern in one axis direction. The frit pattern 312c may be configured in a one-dimensional structure along one axis direction or in a two-dimensional structure along two axis directions.

[0127] Reference Figure 6a (c), the frit pattern 312c may be formed as a groove pattern in which the metal pattern is removed in a circular (or polygonal, elliptical) shape with a prescribed diameter. The frit pattern 312b may be configured in a two-dimensional structure along two axial directions. The frit pattern 312c may be formed in an offset structure in which the center points between the patterns forming adjacent rows are separated by a prescribed interval.

[0128] Reference Figures 5a to 6c In the opaque region 312, the opaque substrate 1010b and the transparent substrate 1010a may be electrically connected. In this regard, in order to make the transparent antenna pattern invisible, a dummy pattern that is electrically very small and below a specified size may be arranged around the antenna pattern. Thus, the pattern in the transparent electrode cannot be distinguished by the eye without deteriorating the antenna performance. The dummy pattern may be designed to have a light transmittance similar to that of the antenna pattern within a specified range.

[0129] The transparent antenna assembly including the opaque substrate 1010b bonded to the transparent electrode portion can be mounted on the glass panel 310. In this regard, in order to ensure invisibility, the opaque substrate 1010b connected to the RF connector or the coaxial cable is arranged in the opaque region 312 of the vehicle glass. On the other hand, the transparent electrode portion is arranged in the transparent region 311 of the vehicle glass, thereby ensuring the invisibility of the antenna outside the vehicle glass.

[0130] A portion of the transparent electrode portion may be attached to the opaque region 312 as appropriate. The frit pattern of the opaque region 312 may be formed to form a gradient from the opaque region 312 to the transparent region 311. If the transmittance of the frit pattern and the transmittance of the transparent electrode portion are made consistent within a specified range, the transmission efficiency of the transmission line can be improved while improving the invisibility of the antenna. On the other hand, a metal mesh shape similar to the frit pattern can be used to ensure invisibility while reducing sheet resistance. In addition, by increasing the line width of the metal mesh in the area connected to the opaque substrate 1010b, the risk of disconnection of the transparent electrode layer during manufacturing and assembly can be reduced.

[0131] Reference Figure 6a (a) and Figure 6b , the conductive pattern 1110 of the antenna module may be composed of a metal grid of the same line width in the opaque region 312. The conductive pattern 1110 may include a connection pattern 1110c connecting the transparent plate 1010a and the opaque substrate 1010b. In the opaque region 312, a frit pattern of a prescribed shape may be arranged at a prescribed interval and formed on the connection pattern 1110c and both sides of the connection pattern 1110c. The connection pattern 1110c may include a first transmittance portion 1111c formed with a first transmittance and a second transmittance portion 1112c formed with a second transmittance.

[0132] In the frit pattern 312a formed in the opaque region 312, metal grids of a predetermined diameter may be arranged along one axis and another axis. The metal grids of the frit pattern 312a may be arranged at intersections of the metal grids with the second transmittance portions 1112c of the connection pattern 1110c.

[0133] Reference Figure 6a (b) and Figure 6b In the frit pattern 312b formed in the opaque region 312, the groove grid of the prescribed diameter in which the metal region is removed can be arranged along one axis direction and another axis direction. The groove grid of the frit pattern 312b can be arranged between the metal grids in the connection pattern 1110c. Thus, the metal region of the frit pattern 312b without the groove grid can be arranged at the intersection of the metal grids.

[0134] Reference Figure 6aand Figure 6c , the connection pattern 1110c may be formed of a metal mesh having a first line width W1 in a first transmittance portion 1111c adjacent to the transparent region 311. The connection pattern 1110c may be formed of a second line width W2 thicker than the first line width W1 in a second transmittance portion 1112c adjacent to the opaque substrate 1010b. In this regard, the first transparency of the first transmittance portion 1111c may be set to be higher than the second transparency of the second transmittance portion 1112c.

[0135] like Figure 5a to Figure 5c When the transparent antenna assembly is attached to the inside of the vehicle glass, the transparent electrode portion can be arranged in the transparent region 311, and the opaque substrate 1010b can be arranged in the opaque region 312. In this regard, the transparent electrode portion can be arranged in the opaque region 312 according to the situation.

[0136] A portion of the metal pattern of the low-transmittance pattern electrode portion and the high-transmittance pattern electrode portion located in the opaque region 312 can be arranged in the gradient region of the opaque region 312. In the case where the transmission line portion in the antenna pattern and the low-transmittance pattern electrode is composed of a transparent electrode, a gain drop may occur due to a decrease in transmission efficiency caused by an increase in sheet resistance. As a solution to improve this gain drop, the transmittance of the frit pattern 312 where the electrode is located and the transmittance of the transparent electrode can be made consistent within a specified range.

[0137] By increasing the line width of the transparent electrode in the region with low transmittance in the frit patterns 312a, 312b, 312c or adding the same shape as the frit patterns 312a, 312b, 312c, a lower sheet resistance can be achieved. This can solve the problem of reduced transmission efficiency while ensuring invisibility. The transmittance and pattern of the opaque region 312 are not limited to Figure 6a The structure of the transmission line may vary depending on the glass manufacturer or vehicle manufacturer. Therefore, the shape and transparency (line width and spacing) of the transparent electrode of the transmission line may vary differently.

[0138] Figure 7a Showing the front view and cross-sectional view of the transparent antenna assembly of the present specification. Figure 7b It is a diagram showing the mesh structure of the metal mesh radiator area and the virtual metal mesh area according to the embodiment.

[0139] Figure 7a (a) shows a front view of the transparent antenna assembly 1000, Figure 7a (b) is a cross-sectional view of the transparent antenna component 1000, showing the layered structure of the transparent antenna component 1000. Figure 7a, the antenna assembly 1000 may include a first transparent dielectric substrate 1010a and a second dielectric substrate 1010b. A conductive pattern 1110 acting as a radiator may be configured on one side of the first transparent dielectric substrate 1010a. A feed pattern 1120f and ground patterns 1121g and 1122g may be formed on one side of the second dielectric substrate 1010b. The conductive pattern 1110 acting as a radiator may include more than one conductive pattern. The conductive pattern 1110 may include a first pattern 1111 connected to the feed pattern 1120f and a second pattern 1112 connected to the ground pattern 1121g. The conductive pattern 1110 may also include a third pattern 1113 connected to the ground pattern 1122g.

[0140] The conductive pattern 1110 constituting the antenna module may be implemented as a transparent antenna. Figure 7b , the conductive pattern 1110 may be formed of a metal grid pattern 1020a having a line width below a specified line width and forming a metal mesh radiator region. A dummy metal grid pattern 1020b may be formed in the inner region or outer region between the first pattern to the third pattern 1111, 1112, 11113 of the conductive pattern 1100 to maintain transparency below a specified level. The metal grid pattern 1020a and the dummy metal grid pattern 1020b may form a metal mesh layer 1020.

[0141] Figure 7b (a) shows the structure of a typical metal grid pattern 1020a and a dummy metal grid pattern 1020b. Figure 7b (b) shows the structure of an atypical metal grid pattern 1020a and a virtual metal grid pattern 1020b. Figure 7b As shown in (a), the metal mesh layer 1020 can be formed into a transparent antenna structure by a plurality of metal meshes. The metal mesh layer 1020 can be formed in a regular metal mesh shape such as a quadrilateral, a rhombus, or a polygon. The conductive pattern can be formed into a plurality of metal meshes to act as a feeder or a radiator. The metal mesh layer 1020 constitutes a transparent antenna area. As an example, the metal mesh layer 1020 can be implemented with a thickness of about 2 mm, but is not limited thereto.

[0142] The metal mesh layer 1020 may include a metal grid pattern 1020a and a dummy metal grid pattern 1020b. The metal grid pattern 1020a and the dummy metal grid pattern 1020b may form an open area (OA) whose ends are disconnected so as not to be electrically connected. The dummy metal grid pattern 1020b may be formed with slits SL so that the ends of the respective meshes CL1, CL2, ..., CLn are not connected.

[0143] Reference Figure 7b(b), the metal mesh layer 1020 may be formed of a plurality of atypical metal meshes. The metal mesh layer 1020 may include a metal grid pattern 1020a and a dummy metal grid pattern 1020b. The metal grid pattern 1020a and the dummy metal grid pattern 1020b may form an open area OA whose ends are disconnected so as not to be electrically connected. The dummy metal grid pattern 1020b may be formed with slits SL so that the ends of the individual grids CL1, CL2, ..., CLn are not connected.

[0144] On the other hand, the transparent substrate on which the transparent antenna of the present specification is formed can be arranged on the glass of a vehicle. Figure 8a Represents the layered structure of the antenna module and the feeding module. Figure 8b It represents a layered structure where the antenna module and the feeding structure are combined and an opaque substrate including the combined portion.

[0145] Reference Figure 8a (a), the antenna module 1100 may include a first transparent dielectric substrate 1010a formed on a first layer and a first conductive pattern 1110 formed on a second layer disposed on the first layer. Figure 7b , the first conductive pattern 1110 may be implemented as a metal mesh layer 1020 including a metal lattice pattern 1020a and a dummy metal lattice pattern 1020b. The antenna module 1100 may further include a protective layer 1031 and an adhesive layer 1041a disposed on the second layer.

[0146] Reference Figure 8a (b), the feeding structure 1100f may include a second dielectric substrate 1010b, a second conductive pattern 1120, and a third conductive pattern 1130. The feeding structure 1100f may further include a first protective layer 1033 and a second protective layer 1034, each stacked on the second conductive pattern 1120 and the third conductive pattern 1130. The feeding structure 1100f may further include an adhesive layer 1041b formed on a portion of the second conductive pattern 1120.

[0147] A second conductive pattern 1120 may be disposed on one side of a second dielectric substrate 1010b implemented as an opaque substrate. A third conductive pattern 1130 may be disposed on the other side of the second dielectric substrate 1010b. A first protective layer 1033 may be formed on the upper portion of the third conductive pattern 1130. A second protective layer 1034 may be formed on the lower portion of the second conductive pattern 1120. The first protective layer 1033 and the second protective layer 1034 are configured to have a low dielectric constant (low permittivity) below a specified value, thereby enabling low-loss feeding to the transparent antenna region.

[0148] Reference Figure 8b(a), the antenna module 1100 may be combined with a feeding structure 1100f implemented by a second dielectric substrate 1010b as an opaque substrate. A first conductive pattern 1110 implemented by a metal mesh layer as a transparent electrode layer may be formed on the upper portion of the first transparent dielectric substrate 1010a. A protective layer 1031 may be formed on the upper portion of the first conductive pattern 1110. A protective layer 1031 and a first adhesive layer 1041a may be formed on the upper portion of the first conductive pattern 1110. The first adhesive layer 1041a may be formed adjacent to the protective layer 1031.

[0149] The first adhesive layer 1041a formed on the upper portion of the first conductive pattern 1110 may be bonded to the second adhesive layer 1041b formed on the lower portion of the second conductive layer 1120. The first transparent dielectric substrate 1010a and the second dielectric substrate 1010b may be bonded by bonding between the first adhesive layer 1041a and the second adhesive layer 1041b. Thus, the metal mesh formed on the first transparent dielectric substrate 1010a may be electrically connected to the feeding pattern formed on the second dielectric substrate 1010b.

[0150] The second dielectric substrate 1010b may be formed with a feeding structure 1100f having a second conductive pattern 1120 on one side and a third conductive pattern 1130 on the other side. The feeding structure 1100f may be implemented by a flexible printed circuit board (Flexible Printed Circuit Board), but is not limited thereto. A first protective layer 1033 may be disposed on the upper portion of the third conductive pattern 1130, and a second protective layer 1034 may be disposed on the lower portion of the second conductive pattern 1120. The adhesive layer 1041b at the lower portion of the third conductive pattern 1130 may be bonded to the adhesive layer 1041a of the antenna module 1100. Thus, the feeding structure 1100f may be combined with the antenna module 1100, and the first conductive pattern 1110 and the second conductive pattern 1120 may be electrically connected.

[0151] The thickness of the antenna module 1100 implemented by the first transparent dielectric substrate 1010a can be formed with a first thickness. The thickness of the feed structure 1100f implemented by the second dielectric substrate 1010b can be formed with a second thickness. For example, the thickness of the dielectric substrate 1010a of the antenna module 1100 can be 75um, the thickness of the first conductive pattern 1110 can be 9um, and the thickness of the protective layer 1031 can be 25um. The first thickness of the antenna module 1100 can be 109um. The thickness of the second dielectric substrate 1010b of the feed structure 1100f can be 50um, the thickness of the second conductive pattern 1120 can be 18um, the thickness of the third conductive pattern 1130 can be 18um, and the thickness of the first protective layer 1033 and the second protective layer 1034 can be 28um. Thus, the second thickness of the feed structure 1100f can be 142um. Since the adhesive layer 1041a is formed on the upper portion of the first conductive pattern 1110 and the adhesive layer 1041b is formed on the lower portion of the second conductive pattern 1120, the entire antenna assembly can be formed with a thickness less than the sum of the first thickness and the second thickness. For example, the thickness of the antenna assembly 1000 including the antenna module 1100 and the feeding structure 1100f can be 198 um.

[0152] Reference Figure 8b (b), a conductive pattern 1120 may be formed on one side of the second dielectric substrate 1010b forming the feeding structure 1100f. The conductive pattern 1120 may be formed in a feeding structure having a CPW (co-planar waveguide) structure having a feeding pattern 1120f and ground patterns 1121g and 1122g formed on both sides. Figure 8b (a), the feeding structure 1100f may be combined with the antenna module 1100 using the region where the adhesive layer 1041 is formed.

[0153] The antenna module and the feeding structure constituting the antenna assembly of this specification can be configured on the vehicle glass and combined through a specific combination structure. Figure 9a The figure shows the bonding structure of the transparent antenna disposed in the transparent area and the frit area of ​​the vehicle glass.

[0154] Reference Figure 9a, the first transparent dielectric substrate 1010a can be bonded to the glass panel 310 using an adhesive layer 1041. The conductive pattern of the first transparent dielectric substrate 1010a can be bonded to the conductive pattern 1130 of the second dielectric substrate 1010b by ACF bonding. ACF bonding is a method of bonding the bonding surface for several seconds using an adhesive tape with metal balls added under high temperature / high pressure conditions (e.g., 120-150 degrees, 2-5 MPa), which can be achieved by contacting the electrodes with metal balls. ACF bonding electrically connects the conductive pattern while curing the adhesive layer 1041 due to heat to provide bonding force.

[0155] The first transparent dielectric substrate 1010a formed with a transparent electrode layer can be attached to the second dielectric substrate 1010b in the form of an FPCB by using a local soldering technology. The connection pattern of the FPCB and the transparent antenna electrode can be connected by local soldering based on a coil in a magnetic field induction manner. During such local soldering, the temperature of the soldering portion does not rise, or the FPCB does not deform and can maintain a flat surface. Thus, by local soldering between the conductive patterns of the first transparent dielectric substrate 1010a and the second dielectric substrate 1010b, a highly reliable electrical connection can be achieved.

[0156] The first transparent dielectric substrate 1010a, Figure 7a The metal mesh layer 1020, the protective layer 1033 and the adhesive layer 1041 can form a transparent electrode. The second dielectric substrate 1010b as an opaque substrate can be implemented by an FPCB, but is not limited thereto. It can be configured such that the second dielectric substrate 1010b as an FPCB formed with a feeding pattern is connected to the connector part 313 and the transparent electrode.

[0157] The second dielectric substrate 1010b as an opaque substrate may be attached to a portion of the first transparent dielectric substrate 1010a. The first transparent dielectric substrate 1010a may be formed in the transparent region 311 of the glass panel 310. The second dielectric substrate 1010b may be formed in the opaque region 312 of the glass panel 310. A portion of the first transparent dielectric substrate 1010a may be formed in the opaque region 312, and the first transparent dielectric substrate 1010a may be combined with the second dielectric substrate 1010b in the opaque region 312.

[0158] The first transparent dielectric substrate 1010a and the second dielectric substrate 1010b may be bonded by bonding between the adhesive layers 1041a and 1041b. The position where the second dielectric substrate 1010b is bonded to the adhesive layer 1041 may be set as the first position P1. The position where the connector component 313 is welded to the opaque substrate 1010b may be set as the second position P2.

[0159] On the other hand, the vehicle glass formed with the antenna assembly of the present specification can be combined with the main structure of the vehicle. In this regard, Figure 9b It will form Figure 9a A magnified front view of the area where the transparent antenna glass is bonded to the vehicle's main structure. Fig.9c Indicates observation from different positions Figure 9b A cross-sectional view of the combined structure of vehicle glass and main structure.

[0160] Reference Figure 9b A first transparent dielectric substrate 1010a having a transparent antenna formed thereon may be disposed in a transparent region 311 of the glass panel 310. A second dielectric substrate 1010b may be disposed in an opaque region 312 of the glass panel 310. Since the transmittance of the opaque region 312 is lower than the transmittance of the transparent region 311, the opaque region 312 may also be referred to as a BM (Black Matrix) region. A portion of the first transparent dielectric substrate 1010a having a transparent antenna formed thereon may be extended to the opaque region 312 corresponding to the BM region. The first transparent dielectric substrate 1010a and the opaque region 312 may be formed to overlap along a single axis direction by an overlap length OL.

[0161] Fig.9c (a) indicates along Figure 9b A cross-sectional view of the antenna assembly taken along line AB. Fig.9c (a) indicates along Figure 9b A cross-sectional view of the CD line antenna assembly

[0162] Reference Figure 9b and Fig.9c (a), a first transparent dielectric substrate 1010a having a transparent antenna formed thereon may be disposed in a transparent region 311 of a glass panel 310. A second dielectric substrate 1010b may be disposed in an opaque region 312 of the glass panel 310. A portion of the first transparent dielectric substrate 1010a may be extended to the opaque region 312, so that a feeding pattern formed on the second dielectric substrate 1010b and a metal mesh layer of the transparent antenna can be joined and connected.

[0163] The interior cover 49c may be configured to accommodate a connector component 313 connected to the second dielectric substrate 1010b. The connector component 313 may be disposed in a space between the main body 49b of the metal material and the interior cover 49c, and the connector component 313 may be coupled to an in-vehicle cable. The interior cover 49c may be disposed in an upper region of the main body 49b of the metal material. One end of the interior cover 49c may be bent to be coupled to the main body 49b of the metal material.

[0164] The inner cover 49c may be formed of a metal material or a dielectric material. In the case where the inner cover 49c is formed of a metal material, the inner cover 49c and the main body 49b of the metal material form a metal frame 49. In this regard, the vehicle may include the metal frame 49. The opaque region 312 of the glass panel 310 may be supported by a portion of the metal frame 49. To this end, a portion of the main body 49b of the metal frame 49 may be bent so as to be combined with the opaque region 312 of the glass panel 310.

[0165] When the inner cover 49c is formed of a metal material, at least a portion of the metal region may be removed from the upper region of the second dielectric substrate 1010b in the inner cover 49c. A recess portion 49R where the metal region is removed may be formed in the inner cover 49c. Thus, the metal frame 49 may include the recess portion 49R. The second dielectric substrate 1010b may be disposed in the recess portion 49R of the metal frame 49.

[0166] The recess 49R may also be referred to as a metal cut region. One side of the recess 49R may be separated from one side of the opaque substrate 1010b by a first length L1 equal to or greater than a critical value. The lower boundary side of the recess 49R may be separated from the lower boundary side of the opaque substrate 1010b by a second length L2 equal to or greater than a critical value. As the metal of a portion of the inner cover 49c of the metal material is removed, signal loss and changes in antenna characteristics caused by the surrounding metal structure can be prevented.

[0167] Reference Figure 9b and Fig.9c (b), the area where the connector components and the opaque substrate are not configured can be configured so that the inner cover 49c does not form a recessed portion such as a metal removal area. In this regard, not only can the inner cover 49c protect the internal components of the antenna module 1100, but also can be used to Figure 9b and Fig.9cThe recess 49R of (a) discharges the internal heat to the outside. In addition, the recess 49R of the internal cover 49c can immediately determine whether the connection part needs to be repaired or replaced. On the other hand, since the internal cover 49c does not form a recess in the area where the connector component and the second dielectric substrate are not configured, the internal components of the antenna module 1100 can be protected.

[0168] On the other hand, the antenna assembly 1000 of the present specification can be formed in various forms on the glass panel 310, and the glass panel 310 can be attached to the vehicle frame. Fig.10 2 is a diagram showing a stacked structure of an antenna assembly according to an embodiment and attachment areas to a vehicle glass and a vehicle frame.

[0169] Reference Fig.10 (a), the glass panel 310 may include a transparent area 311 and an opaque area 312. The antenna assembly 1000 may include an antenna module 1100 and a feed structure 1100f. The antenna module 1100 may include a first transparent dielectric substrate 1010a, a transparent electrode layer 1020, and an adhesive layer 1041. The feed structure 1100f implemented by the opaque substrate and the transparent electrode layer 1020 implemented by the transparent substrate may be electrically connected. The feed structure 1100f and the transparent electrode layer 1020 may be directly connected through the first bonding area BR1. The feed structure 1100f and the connector component 313 may be directly connected through the second bonding area BR2. Heat may be applied to the first bonding area BR1 and the second bonding area BR2 for bonding. Thus, the bonding areas BR1 and BR2 may be referred to as heating intervals. In the side end area in the opaque area 312 of the glass panel 310, an attachment area AR equivalent to a sealant area for attaching the glass panel 310 and the vehicle frame may be formed.

[0170] Reference Fig.10(b), the glass panel 310 may include a transparent area 311 and an opaque area 312. The antenna assembly 1000 may include an antenna module 1100 and a feed structure 1100f. The antenna module 1100 may include a protective layer 1031, a transparent electrode layer 1020, a first transparent dielectric substrate 1010a, and an adhesive layer 1041. The feed structure 1100f implemented by the opaque substrate and a portion of the antenna module 1100 implemented by the transparent substrate may overlap. The feed structure 1100f and the transparent electrode layer 1020 of the antenna module 1100 may be coupled feed. The feed structure 1100f and the connector component 313 may be directly connected via a bonding area BR. Heat may be applied to the bonding area BR1 for bonding. Thus, the bonding area BR may be referred to as a heating interval. In the side end area in the opaque area 312 of the glass panel 310, an attachment area AR equivalent to a sealant area for attaching the glass panel 310 and the vehicle frame may be formed.

[0171] Reference Fig.10 (a) and Fig.10 (b), the transparent substrate 1010a may include a (hard) coating layer to protect the transparent electrode layer 1020 from the external environment. On the other hand, the adhesive layer 1041 may be added with a UV blocking component to prevent yellowing due to sunlight.

[0172] The broadband transparent antenna structure that can be configured on the glass of a vehicle of the present specification can be implemented by a single dielectric substrate on the same plane as the CPW feeder. In addition, the broadband transparent antenna structure that can be configured on the glass of a vehicle of the present specification can be implemented by forming a grounding structure on both sides of the radiator, thereby forming a broadband structure. The following describes the antenna components related to the broadband transparent antenna structure of the present specification. In this regard, Fig.11 Shows front and side views of an antenna assembly that can be attached to the front glass of a vehicle.

[0173] Reference Fig.11 In a region of the glass panel 310 of the vehicle adjacent to the metal frame 49, the metal mesh layer 1020 may be formed as an antenna pattern in a transparent pattern. The inner cover 49c may be formed of a metal material or a dielectric material. In the case where the inner cover 49c is formed of a metal material, the inner cover 49c and the main body 49b of the metal material form the metal frame 49.

[0174] The metal mesh layer 1020 formed as an antenna pattern can be formed in an area of ​​the front glass, for example, can be formed in the upper area of ​​the front glass adjacent to the metal frame 49, but is not limited thereto and can be changed according to the application. The glass panel 310 can be composed of a transparent area 311 and an opaque area 312. The metal mesh layer 1020 can be formed in the transparent area 311 with a transparent pattern, and the FPCB 1100b for feeding the antenna can be formed in the opaque area 312.

[0175] In the side end area in the opaque area 312, an attachment area AR equivalent to a sealant area for attaching the glass panel 310 and the metal frame 49 of the vehicle may be formed. The FPCB1100b may be bonded to the glass panel 310 through the bonding area BR. The FPCB1100b for feeding may be formed to a first length, and the end of the FPCB1100b and the end of the attachment area AR may be formed to have a bonding tolerance of a second length shorter than the first length. For example, the FPCB1100b may be formed to a first length of about 12 mm, and the end of the FPCB1100b and the end of the attachment area AR may be formed to a second length of about 8 mm.

[0176] On the other hand, the cable structure for feeding the antenna assembly of the present specification can be arranged perpendicularly or parallel to the metal frame 49 of the vehicle. In this regard, Figures 12a to 12c 1 is a diagram comparing cable structures and reflection coefficient characteristics of antenna assemblies according to embodiments.

[0177] Fig.12a (a) shows a first structure of an antenna assembly 1000a consisting of first to third conductive patterns 1110, 1120a, 1130a. The first to third conductive patterns 1110a, 1120a, 1130a can be configured on a first dielectric substrate 1010a, and a feed pattern 1110f and a ground conductive pattern 1110g can be formed on a second dielectric substrate 1010b in an FPCB structure. The first conductive pattern 1110a may include a first portion 1111 and a second portion 1112 formed perpendicularly to the first portion 1111. The second conductive pattern 1120a may include a third portion 1121a and a fourth portion 1122a formed perpendicularly to the third portion 1121a. The third conductive pattern 1130a may be configured between the first conductive pattern 1110a and the ground conductive pattern 1110g.

[0178] Fig.12a (b) shows the reflection coefficient characteristics of the antenna assembly 1000a. Fig.12aThe antenna assembly 1000a formed by the third conductive pattern 1130a exhibits a resonance characteristic of -15 dB or less in the UHB (ultra-high band) above 4.5 GHz, which is a frequency band higher than the operating frequency band of the first conductive pattern 1110 and the second conductive pattern 1120 .

[0179] Figure 12b (a) shows a second structure in which the antenna assembly 1000b is configured adjacent to the metal frame 49 of the vehicle. The metal frame 49 can be configured adjacent to the antenna assembly 1000b composed of the first to third conductive patterns 1110, 1120a, and 1130a. The first to third conductive patterns 1110, 1120a, and 1130a can be configured on the first dielectric substrate 1010a, and the feed pattern 1110f and the ground conductive pattern 1110g can be formed on the second dielectric substrate 1010b in an FPCB structure. The coaxial cable 313 can be configured in parallel with the metal frame 49. The signal line 313a of the coaxial cable 313 can be connected to the feed pattern 1110f, and the ground 313b of the coaxial cable 313 can be connected to the ground conductive pattern 1110g.

[0180] Figure 12b (b) shows the reflection coefficient characteristics of the antenna assembly 1000b. Figure 12b In the structure where the coaxial cable 313 and the metal frame 49 are arranged in parallel, the resonance characteristics of the antenna component 1000b composed of the third conductive pattern 1130a are reduced in UHB above 4.5 GHz.

[0181] Fig.12c (a) shows a third structure in which the antenna assembly 1000 is arranged adjacent to the metal frame 49 of the vehicle. A structure in which the metal frame 49 of the vehicle is arranged adjacent to the antenna assembly 1000 composed of the first conductive pattern 1110 and the second conductive pattern 1120. The first conductive pattern 1110 and the second conductive pattern 1120 can be arranged on the first dielectric substrate 1010a, and the feed pattern 1110f and the ground conductive pattern 1110g can be formed on the second dielectric substrate 1010b in an FPCB structure. The first region 1111g of the ground conductive pattern 1110g can be connected to the ground 313b of the coaxial cable 313. A portion of the first region 1111g of the ground conductive pattern 1110g can be connected to the second conductive pattern 1120. The second region 1112g of the ground conductive pattern 1110g can be configured to act as a radiator of the UHB. The coaxial cable 313 can be arranged in parallel with the metal frame 49. The signal line 313 a of the coaxial cable 313 may be connected to the feeding pattern 1110 f , and the ground 313 b of the coaxial cable 313 may be connected to the ground conductive pattern 1110 g .

[0182] Fig.12c (b) shows the reflection coefficient characteristics of the antenna assembly 1000. Fig.12c In the structure where the coaxial cable 313 is arranged in parallel with the metal frame 49, the antenna component 1000 formed by the second region 1112g of the ground conductive pattern 1110g has improved resonance characteristics in UHB above 4.5 GHz. The antenna component 1000 having the second region 1112g of the ground conductive pattern 1110g has a resonance characteristic of less than -15 dB in UHB above 4.5 GHz.

[0183] In the structure of the antenna assembly described above, the antenna radiation characteristics are explained with reference to the electric field distribution diagram. Fig.13 Shows Figures 12a to 12c Electric field distribution diagram of the structure of the antenna component.

[0184] Reference Fig.12a and Fig.13 (a), the electric field distribution value of the first region Ra of the third conductive pattern 1130a formed by the stub is higher than that of other regions. As a result, the radiation contribution of the third conductive pattern 1130a is higher than that of other conductive patterns. By forming the shape of the third conductive pattern 1130a into an optimal shape combining a triangular and a quadrilateral structure, broadband impedance adjustment can be performed in the UHB band.

[0185] Reference Figure 12b and Fig.13 (b), due to the configuration structure change of the coaxial cable 313 for feeding, the electric field distribution can be concentrated in the second region Rb of FPCB1100b. Thus, the electric field distribution in the third conductive pattern 1130a formed by the stub can be formed to be relatively low. Thus, the radiation contribution of the second region Rb of FPCB1100b can be higher than the radiation contribution of the third conductive pattern 1130a. In this regard, since the shape of the second region Rb of FPCB1100b is not optimized, broadband impedance adjustment is not performed in the UHB band.

[0186] Reference Fig.12c and Fig.13(c), by extending the ground conductive pattern of FPCB1100b to an area symmetrical to the area where the coaxial cable 313 is configured, it can be used as a radiator in the UHB band. In this regard, the electric field distribution value of the third area Rc of the second area 1112g configured with the ground conductive pattern 1110g is formed to be higher than other areas. The third area Rc of the second area 1112g configured with the ground conductive pattern 1110g can act as a radiator in the UHB band. Thus, the second area 1112g of the ground conductive pattern 1110g can replace the third conductive pattern implemented as a transparent antenna in the UHB band. By forming the shape of the second area 1112g of the ground conductive pattern 1110g into a structure that combines a triangular structure and a quadrilateral structure, broadband impedance adjustment can be performed in the UHB band.

[0187] The aforementioned antenna assembly can be arranged perpendicularly or parallel to the metal frame of the vehicle. In this regard, Fig.14a This is a diagram comparing a first structure of an embodiment arranged perpendicularly to a metal frame of a vehicle and a second structure of an embodiment arranged parallel to the metal frame of the vehicle. Fig.14b It is a comparison Fig.14a Graph of the antenna efficiency of the first structure and the second structure.

[0188] Reference Fig.11 and Fig.14a The metal mesh layer 1020 provided on the first dielectric substrate 1010a of the antenna assembly 1000b, 1000 can be arranged in the transparent area 311 of the glass panel 310. The first to third conductive patterns 1110, 1120a, 1130a formed on the first dielectric substrate 1010a can constitute the first antenna ANT1. The second antenna ANT2 can be separated from the first antenna ANT1 by a predetermined interval and formed into a structure symmetrical to the first antenna ANT1. The fourth to sixth conductive patterns 1110, 1120a, 1130a formed on the first dielectric substrate 1010a can constitute the second antenna ANT2.

[0189] Fig.14a (a) shows a first structure in which the coaxial cable 313-1 is arranged in a direction perpendicular to the metal frame 49 of the vehicle. Fig.13 (b) of a shows a second structure in which the coaxial cable 313 is arranged in a direction parallel to the metal frame 49 of the vehicle.

[0190] Reference Fig.11 and Fig.14a(a), the feed pattern 1110f and the ground conductive pattern 1110g may be formed on the second dielectric substrate 1010b of the antenna assembly 1000b. The second dielectric substrate 1010b may be configured on the opaque region 312 of the glass panel 310. The metal frame 49 of the vehicle may be configured adjacent to the opaque region 312 of the glass panel 310. In a first structure in which the coaxial cable 313-1 connected to the feed pattern 1110f is configured in a direction perpendicular to the metal frame 49 of the vehicle, the opaque region 312 may be formed to have a first length DL1 in the first axial direction. For example, the first length DL1 of the opaque region 312 in the first axial direction may be formed to be approximately 27 mm.

[0191] Reference Fig.11 and Fig.14a (b), the feed pattern 1110f and the ground conductive pattern 1110g can be formed on the second dielectric substrate 1010b of the antenna assembly 1000. The second dielectric substrate 1010b can be configured in the opaque area 312 of the glass panel 310. The metal frame 49 of the vehicle can be configured adjacent to the opaque area 312 of the glass panel 310. In the second structure in which the coaxial cable 313 connected to the feed pattern 1110f is configured in a direction parallel to the metal frame 49 of the vehicle, the opaque area 312 can be formed to a second length DL2 in the first axis direction. For example, the second length DL2 of the opaque area 312 in the first axis direction can be formed to be approximately 19 mm. In the second structure in which the coaxial cable 313 is configured in a direction parallel to the metal frame 49 of the vehicle, the TCU can be combined between the coaxial cables 313. Therefore, the second structure in which the coaxial cable 313 is configured in a direction parallel to the metal frame 49 of the vehicle is a structure that is easy to combine with the TCU.

[0192] Reference Fig.14a (a) and Fig.14b , (i) The first structure in which the coaxial cable 313-1 is arranged in a direction perpendicular to the metal frame 49 of the vehicle has an antenna efficiency characteristic of -3dB or more in the 600MHz to 0.6GHz frequency band. Fig.14a (b) and Fig.14b (ii) The second structure in which the coaxial cable 313 is arranged in a direction parallel to the metal frame 49 of the vehicle reduces the antenna efficiency to below -3 dB in the 600 MHz to 800 MHz frequency band. For example, at a frequency of about 700 MHz, the antenna efficiency of the low frequency band LB is reduced by about 1.5 dB.

[0193] Reference Fig.14a (a) and Fig.14b, (i) The first structure in which the coaxial cable 313-1 is arranged in a direction perpendicular to the metal frame 49 of the vehicle has an antenna efficiency characteristic of -3 dB or more in the 4.5 GHz to 6 GHz frequency band. (ii) The second structure in which the coaxial cable 313 is arranged in a direction parallel to the metal frame 49 of the vehicle has an antenna efficiency characteristic of -3 dB or more in the 4.5 GHz to 6 GHz frequency band. For example, at a frequency of about 5.6 GHz, the antenna efficiency of the ultra-high frequency band UHB is reduced by about 1.5 dB.

[0194] Therefore, in the antenna assembly of the present specification, the distance between the metal frame 49 of the vehicle and the transparent antenna pattern is reduced, so that the antenna efficiency is reduced by more than 1.5 dB in the LB band. In addition, in the antenna assembly of the present specification, the antenna efficiency is reduced by more than 1.5 dB in the UHB band depending on the direction in which the coaxial cable is installed.

[0195] Next, the antenna assembly of this specification which is arranged adjacent to the metal frame of the vehicle is described. Fig.15a A front view of the antenna assembly of the present specification is shown. Fig.15b An enlarged view of the antenna assembly of FIG. 14 is shown configured adjacent to a metal frame. Fig.16 Shown in Fig.15a A structure in which a signal line and a ground of a coaxial cable are connected to a feed pattern and a ground conductive pattern in an antenna assembly.

[0196] Reference Fig.15a and Fig.15b , the antenna assembly 1000 may include a first dielectric substrate 1010a as a transparent substrate and a second dielectric substrate 1010b as an opaque substrate. The first dielectric substrate 1010a may be referred to as a transparent substrate, and the second dielectric substrate 1010b may be referred to as an opaque substrate.

[0197] The first dielectric substrate 1010a forms a transparent area, and a first conductive pattern 1110 and a second conductive pattern 1120 may be formed on one side thereof. The second dielectric substrate 1010b forms an opaque area, and a ground conductive pattern 1110g and a feed pattern 1110f may be formed on one side thereof. The antenna assembly 1000 may include a first antenna ANT1 and a second antenna ANT2. The first antenna ANT1 may include a first conductive pattern 1110 and a second conductive pattern 1120. The second antenna ANT2 may include a first conductive pattern 1110 and a second conductive pattern 1120.

[0198] The first conductive pattern 1110 may include a first portion 1111 and a second portion 1112 perpendicular to the first portion 1111. The second conductive pattern 1120 may include a third portion 1121 and a fourth portion 1122 perpendicular to the third portion 1121. Since the second conductive pattern 1120 is connected to the ground conductive pattern 1110g of the second dielectric substrate 1010b, it may also be referred to as a ground pattern.

[0199] The ground conductive pattern 1110g of the second dielectric substrate 1010b may include a first region 1111g and a second region 1112g. The second portion 1112 of the first conductive pattern 1110 may be connected to the feeding pattern 1110f. The fourth portion 1122 of the second conductive pattern 1120 may be connected to the first region 1111g of the ground conductive pattern 1110g.

[0200] The first region 1111g of the ground conductive pattern 1110g may be connected to the ground 313b of the coaxial cable 313. A portion of the first region 1111g of the ground conductive pattern 1110g may be connected to the fourth portion 1122 of the second conductive pattern 1120. The second region 1112g of the ground conductive pattern 1110g may be configured to operate as a radiator of an ultra-high frequency band (UHB). The second region 1112g of the ground conductive pattern 1110g may operate as a radiator in the form of a ground stub in the UHB band. The UHB is a frequency band higher than the operating frequency band of the first conductive pattern 1110 and the second conductive pattern 1120. On the other hand, the coaxial cable 313 is arranged in parallel with the first region 1111g of the ground conductive pattern 1110g, so that the isolation characteristics in the low frequency band LB can be improved.

[0201] Fig.16 (a) is an enlarged view of a structure in which a signal line 313a of a coaxial cable 313 is connected to a feeding pattern 1110f, and a contact portion 313CP for accommodating the coaxial cable 313 is connected to a ground conductive pattern 1110g. Fig.16 (b) as viewed from the front Fig.16 1 is a front view of (a), showing the first region 1111g and the second region 1112g of the ground conductive pattern 1110g. The length Lb from a position where the contact portion 313CP is formed to the end of the second sub-region 1111g2 of the second region 1112g of the ground conductive pattern 1110g can be formed to be in the range of 0.5 to 1 wavelength at a specific frequency in the UHB band. For example, based on the wavelength λg corresponding to the center frequency of the UHB band of 4.5 to 6 GHz, that is, 5.25 GHz, the length Lb can be formed to be in the range of 0.5λg to λg.

[0202] Reference Figures 11 to 16, a signal line 313a corresponding to one side end of the coaxial cable 313 may be connected to the feeding pattern 1110f. A ground 313b of the coaxial cable 313 may be connected to a contact portion 313CP formed concavely to accommodate the coaxial cable 313. The contact portion 313CP may be disposed in the first sub-region 1111g1 of the first region 1111g of the ground conductive pattern 1110g.

[0203] The first region 1111g of the ground conductive pattern 1110g may include a first sub-region 1111g1 and a second sub-region 1111g2. The second length L2 of the second sub-region 1111g2 may be formed to be longer than the first length L1 of the first sub-region 1111g1 in the first axis direction. The second width W2 of the second sub-region may be formed to be narrower than the first width W1 of the first sub-region 1111g1 in the second axis direction. The coaxial cable 313 may be spaced apart from the second sub-region 1111g2.

[0204] The second portion 1112 of the first conductive pattern 1110 may be connected to the signal line 313a of the coaxial cable 313 through the feeding pattern 1110f. The fourth portion 1122 of the second conductive pattern 1120 may be connected to the ground 313g of the coaxial cable 313 through the first subregion 1111g1 of the second region 1112g of the ground conductive pattern 1110g.

[0205] On the other hand, according to another embodiment of the present specification, the second region 1112g of the ground conductive pattern 1110g of the antenna module disposed adjacent to the metal frame 49 may be formed into various structures. Fig.17a FIG. 1 is a diagram showing a third conductive pattern formed on an upper portion of a second region of a ground conductive pattern. Fig.17b 2 is a diagram in which the second region of the ground conductive pattern is formed into a rectangular structure having widths different from each other. Fig.17c is a diagram in which the second region of the ground conductive pattern is formed of a triangular structure and a rectangular structure.

[0206] Reference Fig.17a , the first region 1111g and the second region 1112g of the ground conductive pattern 1110g may be formed as a rectangular structure on one side and the other side of the feed pattern 1110f. The first region 1111g of the ground conductive pattern 1110g may be formed to be connected to the third conductive pattern 1130a. The second region 1112g of the ground conductive pattern 1110g may be formed to be connected to the second conductive pattern 1120a. The third conductive pattern 1130a may be arranged between the first conductive pattern 1110 and the second region 1112g of the ground conductive pattern 1110g. The third conductive pattern 1130a may act as a radiator of the UHB.

[0207] Reference Fig.17b , the second region 1112g of the ground conductive pattern 1110g may include a third sub-region 1112g1 and a fourth sub-region 1112g2. The third sub-region 1112g1 may be configured to be separated from one side end of the feeding pattern 1110f. The third sub-region 1112g1 may be formed in a rectangular shape having a first width W1 in the second axis direction. The fourth sub-region 1112g2 may be formed to be connected to the third sub-region 1112g1. The fourth sub-region 1112g2 may be formed in a rectangular shape having a third width W3 narrower than the first width W1. The second region 1112g of the ground conductive pattern 1110g may act as a radiator of the UHB.

[0208] Referring to FIG. 14, FIG. 15 and Fig.17c , the second region 1112g of the ground conductive pattern 1110g may include a third sub-region 1112g1 and a fourth sub-region 1112g2. The third sub-region 1112g1 may be configured to be separated from one side end of the feeding pattern 1110f. The third sub-region 1112g1 may be formed in a triangular shape having a slope of a specified angle. The third sub-region 1112g1 may be formed so that the width in the second axis direction gradually decreases as it moves away from the feeding pattern 1110f, with the feeding pattern 1110f as a reference. The fourth sub-region 1112g2 may be formed to be connected to the third sub-region 1112g1. The fourth sub-region 1112g2 may be formed in a rectangular shape. The second region 1112g of the ground conductive pattern 1110g may act as a radiator of the UHB.

[0209] right Figures 17a to 17c The antenna characteristics of the CPW antenna structure are described. Fig.18a It is shown Figures 17a to 17c Plot of the reflection coefficient characteristics of the CPW antenna structure. Fig.18b It is shown Figures 17a to 17c Figure 2. Efficiency characteristics of the CPW antenna structure.

[0210] Reference Fig.17a and Fig.18a , the antenna assembly 1000a including the third conductive pattern 1130a has a reflection coefficient characteristic of about -8dB in the UHB band above 4.5GHz. Fig.17b and Fig.18a The antenna assembly 1000b including the second region 1112g of the ground conductive pattern 1110g of the rectangular step structure has a reflection coefficient characteristic of about -10dB to -15dB in the UHB band above 4.5GHz. Therefore, by designing the FPCB stub structure for the second region 1112g of the ground conductive pattern 1110g of the rectangular step structure, a UHB resonance mode can be achieved.

[0211] Reference Fig.17c and Fig.18a The antenna assembly 1000 including the second region 1112g of the triangular and rectangular ground conductive pattern 1110g has a reflection coefficient characteristic of less than -15dB in the UHB frequency band above 4.5GHz. Therefore, by designing the CPW feeder adjustment structure for the second region 1112g of the triangular and rectangular ground conductive pattern 1110g, the impedance matching characteristic of the UHB resonance mode can be improved.

[0212] Reference Fig.17a and Fig.18b The antenna assembly 1000a including the third conductive pattern 1130a has an efficiency characteristic of less than -3dB in the UHB band above 4.5GHz. Fig.14b and Fig.15a The antenna assembly 1000b including the second region 1112g of the ground conductive pattern 1110g having a rectangular step structure has an efficiency characteristic of about -3dB in the UHB band above 4.5GHz. Therefore, by designing a FPCB stub structure for the second region 1112g of the ground conductive pattern 1110g having a rectangular step structure, the efficiency of the UHB band can be improved.

[0213] Reference Fig.17c and Fig.18b The antenna assembly 1000 including the second region 1112g of the triangular and rectangular ground conductive pattern 1110g has an efficiency characteristic of about -2dB in the UHB band above 4.5GHz. Therefore, by designing the CPW feeder adjustment structure for the second region 1112g of the triangular and rectangular ground conductive pattern 1110g, the efficiency characteristic of the UHB band can be optimized.

[0214] Reference Figures 11 to 16 as well as Fig.17c , a design method of the second conductive pattern 1120 and the ground conductive pattern 1110g for optimizing antenna performance is described.

[0215] In order to optimize the antenna performance in the UHB frequency band, the length Lu from the contact portion 313CP to the end of the fourth subregion 1112g2 of the second region 1112g of the ground conductive pattern 1110g can be implemented in a specified range. The length Lu from the contact portion 313CP to the end of the fourth subregion 1112g2 of the second region 1112g of the ground conductive pattern 1110g can be formed in a range between 0.5 times and 1 times the specific wavelength corresponding to the specific frequency of the UHB.

[0216] While optimizing the performance of the antenna assembly 1000, it is necessary to limit the size of the entire antenna to below a specified size. To this end, the second area 1112g of the ground conductive pattern 1110g can be configured in the lower area of ​​the second portion 1112 of the first conductive pattern 1110. The first conductive pattern 1110 and the second conductive pattern 1120 can be formed to a first height h1 in the second axis direction. The fourth portion 1122 of the second conductive pattern 1120 may include a groove area 1120s where the conductive pattern is removed by a second height h2. The second height h2 of the groove area 1120s of the second conductive pattern 1120 may be formed to be more than 0.5 times the first height h1.

[0217] On the other hand, the antenna assembly 1000 of the present specification can operate in multiple frequency bands for 4G / 5G wireless communications. The antenna assembly 1000 can operate in a dipole antenna mode in 617 to 960 MHz as a first frequency band. The first frequency band may correspond to the low band (low band, LB) of 4G / 5G. It can operate in a monopole antenna mode in 1520 to 4500 MHz as a second frequency band. The second frequency band may correspond to the mid band (mid band, MB) and high band (highband, HB) of 4G / 5G. The antenna assembly 1000 can operate as a radiator by additional resonance in 4500 to 6000 MHz as a third frequency band. The third frequency band may correspond to the ultrahigh band (ultrahigh band, UHB) of 4G / 5G.

[0218] Reference Figures 11 to 16 as well as Fig.17c , the radiation principle and operation of the antenna assembly 1000 according to each frequency band are described. The first conductive pattern 1110 and the second conductive pattern 1120 can operate in a dipole antenna mode in the first frequency band. The first conductive pattern 1110 and the second conductive pattern 1120 can be formed to have an asymmetrical structure (asymmetrical structure). The boundary BS1 of the upper end portion of the first portion 1111 of the first conductive pattern 1110 and the boundary BS2 of the lower end portion can be formed in a step shape. The boundary BS1 of the upper end portion of the third portion 1121 of the second conductive pattern 1120 can be formed in a straight line shape, and the boundary BS2 of the lower end portion can be formed in a step shape.

[0219] The first conductive pattern 1110 may operate in a monopole antenna mode in the second frequency band. The second region 1112g of the ground conductive pattern 1110g may operate as a radiator in the third frequency band. The second frequency band may be set to a frequency greater than the first frequency band. The third frequency band may be set to a frequency greater than the second frequency band.

[0220] On the other hand, the antenna assembly of the present specification can be formed in a transparent antenna structure. Figure 7b 14, the first conductive pattern 1110 and the second conductive pattern 1120 of the antenna assembly 1000 may be formed of a metal mesh shape 1020 having a plurality of open areas OA on a first dielectric substrate 1010a. The first conductive pattern 1110 and the second conductive pattern 1120 may be formed of a metal grid pattern 1020a. The metal grid pattern 1020a may be formed to have an open area OA between it and the dummy metal grid pattern 1020b. The first conductive pattern 1110 and the second conductive pattern 1120 may be formed in a CPW structure on the first dielectric substrate 1010a.

[0221] The antenna assembly 1000 may include a plurality of dummy grid patterns 1020b in the radiator region on the first dielectric substrate 1010a, that is, in the outside portion of the first region 1100a. On the other hand, the plurality of dummy grid patterns 1020b may also be configured in the dielectric region between the first conductive pattern 111 and the second conductive pattern 1120. The plurality of dummy grid patterns 1020b may be formed to be not connected to the feed pattern 1110f and the ground conductive pattern 1110g. The plurality of dummy grid patterns 1020b may be formed to be separated from each other.

[0222] As mentioned above, the antenna assembly of the present specification can be configured on the vehicle glass and can be configured adjacent to the metal frame of the vehicle. In addition, the antenna assembly of the present specification can include a plurality of antenna elements to perform multiple input and output (MIMO). In this regard, Fig.19a A plurality of antenna elements is shown. Figure 12b The antenna assembly is configured on the structure of the vehicle glass. Fig.19b A plurality of antenna elements is shown. Figure 12b The antenna assembly is formed on a structure of a glass panel arranged inside a metal frame. Fig.19c yes Fig.19b A side perspective view of an exploded state of a combined structure of a metal frame and a glass panel forming an antenna assembly.

[0223] Reference Figure 12b and Fig.19a, an antenna assembly 1000b including a first antenna ANT1 and a second antenna ANT2 may be disposed on the glass panel 310. The glass panel 310 may be formed with a specified length, width, and thickness. For example, the vehicle glass 310 may be formed to be 600x400mm, and the thickness of the glass panel 310 may be formed to be 3.5t, but is not limited thereto and may be changed according to the application. The first antenna ANT1 and the second antenna ANT2 including the first to third conductive patterns 1110, 1120a, and 1130a may be configured in a symmetrical form with the AA' line as a reference.

[0224] Reference Fig.11 , Figure 12b , Fig.19b as well as Fig.19c The glass panel 310 disposed inside the metal frame 49 may be provided with an antenna assembly 1000b including a first antenna ANT1 and a second antenna ANT2. The metal frame 49 may be configured to include a main body 49b of a metal material and an inner cover 49c. The inner cover 49c may be formed of a metal material or a dielectric material. The inner cover 49c may be disposed in a lower region of the main body 49b of the metal material so as to overlap with the main body 49b of the metal material.

[0225] The glass panel 310 may be disposed in the hollow space inside the metal frame 49. The glass panel 310 may be configured to include a transparent region 311 and an opaque region 312. A frit pattern may be formed in the opaque region 312. At least a portion of the opaque region 312 may be disposed to overlap with the main body 49b of the metal material.

[0226] The glass panel 310 may be formed with a specified length, width and thickness. For example, the glass panel 310 may be formed with 600x400 mm, and the thickness of the glass panel 310 may be formed with 3.5t, but is not limited thereto and may be changed according to the application. The first antenna ANT1 and the second antenna ANT2 including the first to third conductive patterns 1110, 1120a, 1130a may be formed in a symmetrical form with the AA' line as a reference.

[0227] on the other hand, Fig.20a Shows Fig.19a Reflection coefficient and efficiency characteristics of antenna components. Fig.20b Shows Fig.19b Reflection coefficient and efficiency characteristics of the antenna assembly adjacent to the metal frame.

[0228] Reference Fig.19a and Fig.20a(a), the antenna assembly 1000b has reflection coefficient characteristics S11 and S22 of less than -8 dB in the 600 MHz to 6 GHz frequency band, which is the entire frequency band for 4G / 5G wireless communications. Here, S11 and S22 represent the reflection coefficient characteristics of the first antenna ANT1 and the second antenna ANT2, respectively. The isolation S21 between the first antenna ANT1 and the second antenna ANT2 has a value of less than -10 dB in the 600 MHz to 6 GHz frequency band.

[0229] Reference Fig.12a , Fig.19a as well as Fig.20a (b), (i) the antenna assembly 1000a has an antenna efficiency characteristic of more than -3dB in the 600MHz to 6GHz frequency band. Figure 12b , Fig.19a as well as Fig.20a (b), (ii) the antenna efficiency of the first antenna ANT1 and the second antenna ANT2 of the antenna assembly 1000b is reduced to below -3dB in the UHB band above 4.5GHz in the 600MHz to 6GHz frequency band. Figure 12b (ii) The antenna assembly 1000 b has reduced antenna efficiency in the UHB band even in a structure without a metal frame due to the shortened length of the FPCB 1100 b , the deletion of the third conductive pattern, and the configuration structure of the coaxial cable 313 c .

[0230] Reference Fig.19b and Fig.20b (a), the reflection coefficient characteristics S11 and S22 of the antenna component 1000b can be reduced to above -8dB in the approximately 900MHz frequency band of the 600MHz to 6GHz frequency band, which is the entire frequency band for 4G / 5G wireless communications. In the approximately 800 to 1100MHz frequency band of the 600MHz to 6GHz frequency band, the reflection coefficient characteristics S11 and S22 can be reduced to above -8dB. Here, S11 and S22 respectively represent the reflection coefficient characteristics of the first antenna ANT1 and the second antenna ANT2. The isolation S21 between the first antenna ANT1 and the second antenna ANT2 has a value of less than -10dB in the 600MHz to 6GHz frequency band.

[0231] Reference Fig.12a , Fig.19a as well as Fig.20b (b), (i) the antenna assembly 1000a has an antenna efficiency characteristic of more than -3dB in the 600MHz to 6GHz frequency band. Figure 12b , Fig.19b as well as Fig.20b(b), (ii) the antenna efficiency of the first antenna ANT1 and the second antenna ANT2 of the antenna assembly 1000b is reduced to below -3dB in the UHB band above 4.5GHz in the 600MHz to 6GHz frequency band. Figure 12b (ii) The antenna assembly 1000 b has reduced antenna efficiency in the UHB band due to the shortened length of the FPCB 1100 b , the deletion of the third conductive pattern, and the configuration structure of the coaxial cable 313 c . Figure 12b (ii) The antenna efficiencies of the first antenna ANT1 and the second antenna ANT2 of the antenna assembly 1000 b are also reduced to below −3 dB in the 600 MHz to 1 GHz frequency band.

[0232] Reference Figure 12b , Fig.19b as well as Fig.20b By configuring the metal frame 49 adjacent to the antenna assembly 1000b, in the low frequency band LB, such as the 900MHz band, the reflection loss characteristic is reduced and the antenna efficiency can be reduced by about 1.2dB.

[0233] As mentioned above, the antenna assembly of the present specification can be configured on the vehicle glass and can be configured adjacent to the metal frame of the vehicle. In addition, the antenna assembly of the present specification can include a plurality of antenna elements to perform multiple input and output (MIMO). In this regard, Fig.21a A plurality of antenna elements is shown. Fig.12c The antenna assembly is configured in a structure of a vehicle glass disposed inside a metal frame. Figure 21b Shows Fig.21a Reflection coefficient and efficiency characteristics of antenna components.

[0234] Reference Fig.12c , Fig.15b as well as Fig.21a , an antenna assembly 1000 including a first antenna ANT1 and a second antenna ANT2 may be configured on a vehicle glass 310. The vehicle glass 310 may be formed with a specified length, width, and thickness. The first antenna ANT1 may include a first conductive pattern 1110, a second conductive pattern 1120, and a ground conductive pattern 1110g. The second antenna ANT2 may include a third conductive pattern 1130, a fourth conductive pattern 1140, and a second ground conductive pattern 1120g.

[0235] Reference Fig.12a , Fig.19a as well as Figure 21b (b), (i) the antenna assembly 1000a has an antenna efficiency characteristic of more than -3dB in the 600MHz to 6GHz frequency band. Fig.21a and Figure 21b (a), the antenna assembly 1000 has reflection coefficient characteristics S11 and S22 of less than -8 dB in the 600 MHz to 6 GHz frequency band, which is the entire frequency band for 4G / 5G wireless communications. Here, S11 and S22 represent the reflection coefficient characteristics of the first antenna ANT1 and the second antenna ANT2, respectively. The isolation S21 between the first antenna ANT1 and the second antenna ANT2 has a value of less than -10 dB in the 600 MHz to 6 GHz frequency band.

[0236] Reference Fig.21a and Figure 21b (b), the first antenna ANT1 and the second antenna ANT2 of the antenna assembly 1000 have an antenna efficiency value of more than -3dB in the low frequency band LB in the frequency band of 600MHz to 6GHz. In addition, the first antenna ANT1 and the second antenna ANT2 of the antenna assembly 1000 also have an antenna efficiency value of more than -3dB in the UHB band above 4.5GHz in the frequency band of 600MHz to 6GHz. Therefore, despite the shortening of the length of FPCB1100b, the deletion of the third conductive pattern, and the configuration structure of the coaxial cable 313c, the antenna efficiency can also be improved in the LB band and the UHB band.

[0237] On the other hand, the antenna assembly of the present specification may include a first transparent dielectric substrate and a second dielectric substrate formed with a transparent electrode layer. In this regard, Fig.22a and Figure 22b It shows the process flow of combining the antenna assembly of the embodiment with the glass panel.

[0238] Reference Fig.22a (a), a first transparent dielectric substrate 1000a having a transparent electrode layer can be manufactured. In addition, a second dielectric substrate 1000b having a feeding pattern 1120f and grounding patterns 1121g and 1122g formed on both sides of the feeding pattern 1120f can be manufactured. The second dielectric substrate 1000b can be implemented by an FPCB, but is not limited thereto. Adhesion areas corresponding to the adhesive layer 1041 can be formed on the first transparent dielectric substrate 1000a and the second dielectric substrate 1000b, respectively.

[0239] Reference Fig.22a(b), a glass panel 310 having a transparent area 311 and an opaque area 312 can be manufactured. In addition, the antenna assembly 1000 can be manufactured by combining at least one second dielectric substrate 1000b in the lower area of ​​the first transparent dielectric substrate 1000a. The first transparent dielectric substrate 1000a and the second dielectric substrate 1000b can be combined by ACF bonding or low-temperature welding to realize a transparent antenna assembly. Thus, the first conductive pattern formed on the first transparent dielectric substrate 1000a can be electrically connected to the second conductive pattern formed on the second dielectric substrate 1000b. When a plurality of antenna elements are implemented on the glass panel 310, the feeding structure 1100f made of the second dielectric substrate 1000b can also be implemented as a plurality of feeding structures.

[0240] Reference Fig.22a (c), the transparent antenna assembly 1000 may be attached to the glass panel 310. In this regard, the first transparent dielectric substrate 1000a formed with a transparent electrode layer may be disposed in the transparent region 311 of the glass panel 310. On the other hand, the second dielectric substrate 1000b as an opaque substrate may be disposed in the opaque region 312 of the glass panel 310.

[0241] Reference Fig.22a (d), the first transparent dielectric substrate 1000a and the second dielectric substrate 1000b can be joined at the first position P1. The connector component 313 such as the fakra cable can be joined to the second dielectric substrate 1000b at the second position P2. The transparent antenna assembly 1000 can be combined with the telematics control unit (TCU) 300 using the connector component 313. To this end, the second conductive pattern formed on the second dielectric substrate 1010b can be electrically connected to the connector at one end of the connector component 313. The connector at the other end of the connector component 313 can be electrically connected to the telematics control unit (TCU) 300.

[0242] Figure 22b The antenna components and Fig.22a The difference in the structure of the antenna assembly is that the opaque substrate is integrally made on the glass panel 310, rather than being made separately. Figure 22b In the antenna assembly, the feeding structure implemented by the opaque substrate is implemented by directly printing on the glass panel 310, rather than being made separately by the FPCB.

[0243] Reference Figure 22b(a), a first transparent dielectric substrate 1000a having a transparent electrode layer formed thereon can be manufactured. In addition, a glass panel 310 having a transparent region 311 and an opaque region 312 can be manufactured. In the glass panel manufacturing process of the vehicle, a metal wire / plate for connector connection can be realized (fired). As in the case of a heat wire realized in the glass of the vehicle, a transparent antenna mounting portion can be realized in a metal form on the glass panel 310. In this regard, in order to electrically connect to the first conductive pattern of the first transparent dielectric substrate 1000a, a second conductive pattern can be realized in the region having the adhesive layer 1041 formed thereon.

[0244] In this regard, the second dielectric substrate 1000b formed with the second conductive pattern may be manufactured integrally with the glass panel 310. The second dielectric substrate 1000b may be integrally formed with the glass panel 310 at the opaque region 312 of the glass panel 310. The frit pattern 312 formed with the opaque region 312 of the second dielectric substrate 1000b may be removed. The second conductive pattern may be realized by forming a feed pattern 1120f on the second dielectric substrate 1000b and forming ground patterns 1121g, 1122g on both sides of the feed pattern 1120f.

[0245] Reference Figure 22b (b), the transparent antenna assembly 1000 can be attached to the glass panel 310. In this regard, a first transparent dielectric substrate 1000a formed with a transparent electrode layer can be configured in a transparent region 311 of the glass panel 310. The antenna assembly 1000 can be manufactured by combining at least one second dielectric substrate 1000b in a lower region of the first transparent dielectric substrate 1000a. The first transparent dielectric substrate 1000a and the second dielectric substrate 1000b can be combined by ACF bonding or low-temperature welding to realize a transparent antenna assembly. Thus, the first conductive pattern formed on the first transparent dielectric substrate 1000a can be electrically connected to the second conductive pattern formed on the second dielectric substrate 1000b. When a plurality of antenna elements are implemented on the glass panel 310, the feeding structure 1100f made of the second dielectric substrate 1000b can also be implemented as a plurality of feeding structures.

[0246] Reference Figure 22b(c), the first transparent dielectric substrate 1000a and the second dielectric substrate 1000b can be joined at the first position P1. The connector component 313 such as the fakra cable can be joined to the second dielectric substrate 1000b at the second position P2. The transparent antenna assembly 1000 can be combined with the telematics control unit (TCU) 300 using the connector component 313. To this end, the second conductive pattern formed on the second dielectric substrate 1010b can be electrically connected to the connector at one end of the connector component 313. The connector at the other end of the connector component 313 can be electrically connected to the telematics control unit (TCU) 300.

[0247] Hereinafter, a vehicle having an antenna module according to one aspect of the present specification will be described in detail. Fig.23 This shows a configuration in which a plurality of antenna modules disposed at different positions of the vehicle of this specification are combined with other components of the vehicle.

[0248] Reference Figures 1 to 23 The vehicle 500 has a conductive vehicle body that acts as an electrical ground. The vehicle 500 may have a plurality of antennas 1100a to 1100d that may be disposed at different positions of the glass panel 310. The antenna assembly 1000 may be configured such that the plurality of antennas 1100a to 1100d include a communication module 300. The communication module 300 may include a transceiver circuit 1250 and a processor 1400. The communication module 300 may be equivalent to a TCU of the vehicle or constitute at least a portion of a TCU.

[0249] The vehicle 500 may include an object detection device 520 and a navigation system 550. The vehicle 500 may include an additional processor 570 in addition to the processor 1400 included in the communication module 300. The additional processor 570 may be physically distinguished from the processor 1400 or may be functionally distinguished and implemented on a substrate. The processor 1400 may be implemented as a TCU, and the processor 570 may be implemented as an ECU (Electronic Control Unit).

[0250] In the case where the vehicle 500 is an autonomous driving vehicle, the processor 570 may be an autonomous driving integrated controller (ADCU: Automated Driving Control Unit) integrated with an ECU. Based on the information sensed by the camera 531, the radar 532, and / or the laser radar 533, the processor 570 may search for a path and control the increase or decrease of the speed of the vehicle 500. To this end, the processor 570 may be linked with the processor 530 equivalent to the MCU in the object detection device 520 and / or the communication module 300 equivalent to the TCU.

[0251] The vehicle 500 may include a first transparent dielectric substrate 1010a and a second dielectric substrate 1010b configured on a glass panel 310. The first transparent dielectric substrate 1010a may be formed inside the glass panel 310 of the vehicle or attached to the surface of the glass panel 310. The first transparent dielectric substrate 1010a may be configured to form a conductive pattern in the form of a metal mesh. The vehicle 500 may include an antenna module 1100 on one side of the dielectric substrate 1010, wherein the antenna module 1100 is formed with a conductive pattern formed in the shape of a metal mesh to radiate a wireless signal.

[0252] The vehicle 500 may include a metal frame 49, a glass panel 310, and an antenna assembly 1100. An opening is formed inside the metal frame 49, and the glass panel 310 may be disposed in the opening. The glass panel 310 may include a transparent region 311 and an opaque region 312.

[0253] The antenna assembly 1100 may include a first transparent dielectric substrate 1010a, which is disposed in a transparent region 311 of a glass panel 310 and includes a first conductive pattern 1110 and a second conductive pattern 1120. The antenna assembly 1100 may include a second dielectric substrate 1010b, which is disposed in an opaque region 312 of a glass panel 310 and includes a ground conductive pattern 1110g and a feed pattern 1110g. The first conductive pattern 1110 may include a first portion 1111 and a second portion 1112 perpendicular to the first portion 1111. The second conductive pattern 1120 may include a third portion 1113 and a fourth portion 1122 perpendicular to the third portion 1121.

[0254] The ground conductive pattern 1110g of the second dielectric substrate 1010b may include a first region 1111g and a second region 1112g. The second portion 1112 of the first conductive pattern 1110 may be connected to the feed pattern 1110f. The second conductive pattern 1120 of the second conductive pattern 1120 may be connected to the first region 1111g of the ground conductive pattern 1110g.

[0255] The first region 1111g of the ground conductive pattern 1110g may be connected to the ground 313b of the coaxial cable 313. A portion of the first region 1111g of the ground conductive pattern 1110g may be connected to the second conductive pattern 1120. The second region 1112g of the ground conductive pattern 1110g may be configured to operate as a radiator of an ultra-high frequency band (UHB) higher than the operating frequency band of the first conductive pattern 1110 and the second conductive pattern 1120.

[0256] The signal line 313a corresponding to one side end of the coaxial cable 313 may be connected to the feeding pattern 1110g. The ground 313b of the coaxial cable 313 may be connected to a contact portion 313CP formed concavely to accommodate the coaxial cable 313. The contact portion 313CP may be disposed in the first sub-region 1111g1 of the second region 1112g of the ground conductive pattern 1110g.

[0257] The first region 1111g of the ground conductive pattern 1110g may include a first sub-region 1111g1 and a second sub-region 1111g2. The second length L2 of the second sub-region 1111g2 may be formed to be longer than the first length L1 of the first sub-region 1111g1 in the first axis direction. The second width W2 of the second sub-region may be formed to be narrower than the first width W1 of the first sub-region 1111g1 in the second axis direction. The coaxial cable 313 may be spaced apart from the second sub-region 1111g2.

[0258] The second portion 1112 of the first conductive pattern 1110 may be connected to the signal line 313a of the coaxial cable 313 through the feeding pattern 1110f. The fourth portion 1122 of the second conductive pattern 1120 may be connected to the ground 313g of the coaxial cable 313 through the first subregion 1111g1 of the second region 1112g of the ground conductive pattern 1110g.

[0259] The second region 1112g of the ground conductive pattern 1110g may include a third subregion 1112g1 spaced apart from one end of the feeding pattern 1110f and formed in a triangular shape with a slope of a predetermined angle. The second region 1112g of the ground conductive pattern 1110g may include a fourth subregion 1112g2 connected to the third subregion 1112g1 and formed in a rectangular shape.

[0260] A length Lu from the contact portion 313CP to the end of the fourth subregion 1112g2 of the second region 1112g of the ground conductive pattern 1110g may be formed to range between 0.5 times and 1 times the specific wavelength corresponding to the specific frequency of the first frequency band.

[0261] The first conductive pattern 1110 and the second conductive pattern 1120 may operate in a dipole antenna mode in a first frequency band. The first conductive pattern 1110 and the second conductive pattern 1120 may be formed to have an asymmetrical structure. The boundary BS1 of the upper end portion and the boundary BS2 of the lower end portion of the first portion 1111 of the first conductive pattern 1110 may be formed in a step shape. The boundary BS1 of the upper end portion of the third portion 1121 of the second conductive pattern 1120 may be formed in a straight line shape, and the boundary BS2 of the lower end portion may be formed in a step shape.

[0262] The first conductive pattern 1110 may operate in a monopole antenna mode in the second frequency band. The second region 1112g of the ground conductive pattern 1110g may operate as a radiator in the third frequency band. The second frequency band may be set to a frequency greater than the first frequency band. The third frequency band may be set to a frequency greater than the second frequency band.

[0263] The antenna assembly 1000 may include a first antenna module 1100a to a fourth antenna module 1100d to perform multiple input and output (MIMO). The first antenna module 1100a may be configured at the upper left side of the glass panel 310, the second antenna module 1100b may be configured at the lower left side, the third antenna module 1100c may be configured at the upper right side, and the fourth antenna module 1100d may be configured at the lower right side. The first antenna module 1100a may be referred to as the first antenna ANT1, the second antenna module 1100b may be referred to as the second antenna ANT2, the third antenna module 1100c may be referred to as the third antenna ANT3, and the fourth antenna module 1100d may be referred to as the fourth antenna ANT4. The first antenna ANT1 may be referred to as the first antenna module ANT1, the second antenna ANT2 may be referred to as the second antenna module ANT2, the third antenna ANT3 may be referred to as the third antenna module ANT3, and the fourth antenna ANT4 may be referred to as the fourth antenna module ANT4.

[0264] As described above, the vehicle 500 may include a telematics control unit (TCU) 300 as a communication module. The TCU 300 may be controlled to transmit and receive signals through at least one of the first to fourth antenna modules 1100a to 1100d. The TCU 300 may include a transceiver circuit 1250 and a baseband processor 1400.

[0265] Thus, the vehicle may further include a transceiver circuit 1250 and a processor 1400. A portion of the transceiver circuit 1250 may also be configured in units of antenna modules or a combination thereof. The transceiver circuit 1250 may be controlled so that a wireless signal of at least one of the first to third frequency bands is radiated through antenna modules ANT1 to ANT4. The first to third frequency bands may be a low frequency band (LB), a middle frequency band (MB), and a high frequency band (HB) for 4G / 5G wireless communications, but are not limited thereto.

[0266] The processor 1400 is operably combined with the transceiver circuit 1250 and can be composed of a modem operating at a baseband. The processor 1400 can be configured to receive or send a signal through at least one of the first antenna module ANT1 and the second antenna module ANT2. The processor 1400 can perform a diversity operation or a MIMO operation using the first antenna module ANT1 and the second antenna module ANT2 to transmit the signal to the interior of the vehicle.

[0267] The antenna module may be disposed in different areas on one side and the other side of the glass panel 310. The antenna module may simultaneously receive signals from the front direction of the vehicle and perform multiple input and output (MIMO). In this regard, the antenna module may further include a third antenna module ANT3 and a fourth antenna module ANT4 in addition to the first antenna module ANT1 and the second antenna module ANT2 to perform 4X4 MIMO.

[0268] The processor 1400 may be configured to select an antenna module to communicate with the entity based on the driving path of the vehicle and the communication path of the entity communicating with the vehicle. The processor 1400 may perform MIMO operation using the first antenna module ANT1 and the second antenna module ANT2 based on the direction of the vehicle. Alternatively, the processor 1400 may perform MIMO operation using the third antenna module ANT2 and the second antenna module ANT4 based on the direction of the vehicle.

[0269] The processor 1400 may perform multiple input and output (MIMO) in the first frequency band through two or more antennas among the first antenna ANT1 to the fourth antenna ANT4. The processor 1400 may perform multiple input and output (MIMO) in at least one of the second frequency band and the third frequency band through two or more antennas among the first antenna ANT1 to the fourth antenna ANT4.

[0270] Therefore, when the signal transmission and reception performance of the vehicle decreases in a certain frequency band, the vehicle can transmit and receive signals through other frequency bands. As an example, for a wider communication coverage and connection reliability, the vehicle can preferentially perform communication connection in the first frequency band, which is a low frequency band, and then perform communication connection in the second and third frequency bands.

[0271] The processor 1400 can control the transceiver circuit 1250 to perform carrier aggregation (CA) or dual connectivity (DC) through at least one of the first antenna ANT1 to the fourth antenna ANT4. In this regard, the communication capacity can be expanded by aggregating the second and third frequency bands that are wider than the first frequency band. In addition, the communication reliability can be improved by utilizing a plurality of antenna elements configured in different areas of the vehicle to provide dual connectivity with surrounding vehicles or entities.

[0272] The broadband transparent antenna assembly that can be configured on the vehicle glass formed inside the metal frame and the vehicle having the same are described above. The technical effects of the broadband transparent antenna assembly that can be configured on the vehicle glass formed inside the metal frame and the vehicle as described above are described below.

[0273] According to the present specification, a broadband transparent antenna assembly having a conductive pattern and an FPCB stub structure that can be configured on vehicle glass is provided, thereby enabling 4G / 5G broadband wireless communication in the vehicle.

[0274] According to the present specification, the conductive pattern and the FPCB stub shape in a broadband transparent antenna assembly that can be configured on vehicle glass can be optimized, and the antenna efficiency can be improved through an antenna structure with an asymmetrical structure.

[0275] According to the present specification, a broadband antenna structure made of a transparent material can be realized that can reduce feed loss and improve antenna efficiency by setting antenna operation modes differently for each frequency band.

[0276] According to the present specification, a broadband antenna structure taking into account an actual vehicle attachment environment can be provided by analyzing the influence caused by a metal chassis of a vehicle other than a glass panel and a change in antenna performance based on a cable structure.

[0277] According to the present specification, a CPW FPCB stub structure can be provided to improve a phenomenon in which antenna performance is degraded in a UHB band of 4 GHz to 6 GHz due to a coaxial cable formed perpendicularly to a CPW feed line.

[0278] According to the present specification, a transparent antenna structure capable of minimizing antenna performance variation and transparency difference between an antenna area and a surrounding area and capable of wireless communication in 4G and 5G frequency bands can be provided.

[0279] The following detailed description will further clarify the additional scope to which this specification can be applied. However, since a person skilled in the art can clearly understand the various changes and modifications within the concept and scope of this specification, it should be understood that the specific embodiments of the preferred embodiments described in detail and this specification are only examples.

[0280] In connection with the aforementioned present specification, the design of the antenna assembly including the transparent antenna and the vehicle controlling it and its driving can be implemented by a computer-readable code on a medium having a program recorded thereon. Computer-readable media include all types of storage devices storing data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), solid-state drive (Solid State Disk, SSD), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., and can also be implemented in the form of a carrier wave (e.g., Internet-based transmission). In addition, the computer may also include a control unit of the terminal. Therefore, the detailed description described above should not be construed as restrictive in all respects, but should be construed as exemplary. The scope of this specification should be determined by a reasonable interpretation of the attached claims, and all changes within the equivalent scope of this specification should fall within the scope of this specification.

Claims

1. An antenna assembly, wherein: include: A first dielectric substrate, forming a transparent region, formed with a first conductive pattern and a second conductive pattern; as well as A second dielectric substrate, forming an opaque region, formed with a ground conductive pattern and a feed pattern; The first conductive pattern includes a first portion and a second portion perpendicular to the first portion, and the second conductive pattern includes a third portion and a fourth portion perpendicular to the third portion; The ground conductive pattern of the second dielectric substrate includes a first region and a second region; The second portion of the first conductive pattern is connected to the feed pattern, and the fourth portion of the second conductive pattern is connected to the first region of the ground conductive pattern; The first region of the ground conductive pattern is connected to the ground of the coaxial cable, and a portion of the first region is connected to the second conductive pattern; The second region of the ground conductive pattern is configured to operate as a radiator in an ultra-high frequency band that is higher than an operating frequency band of the first conductive pattern and the second conductive pattern.

2. The antenna assembly according to claim 1, wherein: A signal line corresponding to one end of the coaxial cable is connected to the feed pattern; The ground of the coaxial cable is connected to a contact portion that is recessed to receive the coaxial cable, and the contact portion is arranged in a first sub-region of the first region of the ground conductive pattern.

3. The antenna assembly according to claim 2, wherein: The first region of the ground conductive pattern includes the first sub-region and the second sub-region; The second length of the second sub-region in the first axis direction is formed to be longer than the first length of the first sub-region in the first axis direction; The second width of the second sub-region in the second axis direction is formed to be narrower than the first width of the first sub-region in the second axis direction; The coaxial cable is arranged to be separated from the second sub-area.

4. The antenna assembly according to claim 2, wherein: the second portion of the first conductive pattern is connected to the signal line of the coaxial cable using the feed pattern; The fourth portion of the second conductive pattern is connected to a ground of the coaxial cable using the first sub-region of the second region of the ground conductive pattern.

5. The antenna assembly according to claim 3, wherein: The second region of the ground conductive pattern includes: a third sub-region, arranged apart from one end of the feeding pattern, and formed into a rectangular shape having a first width in the second axis direction; and The fourth sub-region is connected to the third sub-region and is formed in a rectangular shape having a third width narrower than the first width in the second axis direction.

6. The antenna assembly according to claim 3, wherein: The second region of the ground conductive pattern includes: A third sub-region is disposed apart from one end of the feeding pattern and is formed in a triangular shape having a slope of a predetermined angle; and The fourth sub-region is connected to the third sub-region and is formed in a rectangular shape.

7. The antenna assembly according to claim 6, wherein: The length from the contact portion to the end of the fourth subregion of the second region of the ground conductive pattern is formed to be in a range between 0.5 times and 1 times a specific wavelength corresponding to a specific frequency in the ultra-high frequency band.

8. The antenna assembly according to claim 6, wherein: The second region of the ground conductive pattern is disposed at a lower region of the second portion of the first conductive pattern.

9. The antenna assembly according to claim 6, wherein: The first conductive pattern and the second conductive pattern are formed to a first height in the second axis direction; The fourth portion of the second conductive pattern includes a recessed region where the conductive pattern is removed by a second height; The second height of the recessed region is formed to be greater than or equal to 0.5 times the first height.

10. The antenna assembly according to claim 1, wherein: The first conductive pattern and the second conductive pattern operate in a dipole antenna mode in the first frequency band; The first conductive pattern and the second conductive pattern have an asymmetric structure; An upper end portion and a lower end portion of the first portion of the first conductive pattern are formed in a step shape, and a lower end portion of the third portion of the second conductive pattern is formed in a step shape.

11. The antenna assembly according to claim 10, characterized in that: The first conductive pattern operates in a monopole antenna mode in a second frequency band; The second region of the ground conductive pattern operates as a radiator in the third frequency band; The second frequency band is larger than the first frequency band, and the third frequency band is larger than the second frequency band.

12. The antenna assembly according to claim 1, characterized in that: The first conductive pattern and the second conductive pattern are formed in a metal mesh shape having a plurality of open areas on the first dielectric substrate; The first conductive pattern and the second conductive pattern form a radiator region; The first conductive pattern and the second conductive pattern are a coplanar waveguide structure on the first dielectric substrate.

13. The antenna assembly according to claim 12, wherein: The antenna assembly includes a plurality of virtual grid patterns at an outer portion of the radiator region on the first dielectric substrate; A plurality of the dummy grid patterns are not connected to the feed pattern and the ground conductive pattern; The plurality of virtual grid patterns are separated from each other.

14. A vehicle, wherein: include: a metal frame with openings formed inside; A glass panel including a transparent area and an opaque area; as well as An antenna assembly, disposed on the glass panel; The antenna assembly includes: A first dielectric substrate, disposed in the transparent region of the glass panel, comprising a first conductive pattern and a second conductive pattern; and A second dielectric substrate, disposed in the opaque region of the glass panel, comprising a ground conductive pattern and a feed pattern; The first conductive pattern includes a first portion and a second portion perpendicular to the first portion, and the second conductive pattern includes a third portion and a fourth portion perpendicular to the third portion; The ground conductive pattern of the second dielectric substrate includes a first region and a second region; The second portion of the first conductive pattern is connected to the feed pattern, and the fourth portion of the second conductive pattern is connected to the first region of the ground conductive pattern; The first region of the ground conductive pattern is connected to the ground of the coaxial cable, and a portion of the first region is connected to the second conductive pattern; The second region of the ground conductive pattern is configured to operate as a radiator in an ultra-high frequency band that is higher than an operating frequency band of the first conductive pattern and the second conductive pattern.

15. The vehicle of claim 14, wherein: A signal line corresponding to one end of the coaxial cable is connected to the feed pattern; The ground of the coaxial cable is connected to a contact portion that is recessed to receive the coaxial cable, and the contact portion is arranged in a first sub-region of the second region of the ground conductive pattern.

16. The vehicle of claim 15, wherein: The first region of the ground conductive pattern includes the first sub-region and the second sub-region; The second length of the second sub-region in the first axis direction is formed to be longer than the first length of the first sub-region in the first axis direction; The second width of the second sub-region in the second axis direction is formed to be narrower than the first width of the first sub-region in the second axis direction; The coaxial cable is arranged to be separated from the second sub-area.

17. The vehicle of claim 15, wherein: the second portion of the first conductive pattern is connected to the signal line of the coaxial cable using the feed pattern; The fourth portion of the second conductive pattern is connected to a ground of the coaxial cable using the first sub-region of the second region of the ground conductive pattern.

18. The antenna assembly according to claim 16, wherein: The second region of the ground conductive pattern includes: A third sub-region is disposed apart from one end of the feeding pattern and is formed in a triangular shape having a slope of a predetermined angle; and The fourth sub-region is connected to the first sub-region and is formed in a rectangular shape.

19. The vehicle of claim 17, wherein: A length from the contact portion to an end of the fourth subregion of the second region of the ground conductive pattern is formed to be in a range between 0.5 times and 1 times a specific wavelength corresponding to a specific frequency of the first frequency band.

20. The vehicle of claim 14, wherein: The first conductive pattern and the second conductive pattern operate in a dipole antenna mode in the first frequency band; The first conductive pattern and the second conductive pattern have an asymmetric structure; The upper end and the lower end of the first portion of the first conductive pattern are formed in a step shape, and the lower end of the third portion of the second conductive pattern is formed in a step shape; The first conductive pattern operates in a monopole antenna mode in a second frequency band; The second region of the ground conductive pattern operates as a radiator in the third frequency band; The second frequency band is larger than the first frequency band, and the third frequency band is larger than the second frequency band.

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